./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:14,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:14,140 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:48:14,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:14,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:14,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:14,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:14,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:14,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:14,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:14,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:14,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:14,176 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:14,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:14,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:14,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:14,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:14,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:14,180 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:48:14,180 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:48:14,181 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:48:14,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:14,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:48:14,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:48:14,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:14,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:14,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:14,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:14,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:14,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:14,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:14,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:14,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:14,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:14,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:14,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:14,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:14,189 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:14,189 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_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 [2023-11-06 22:48:14,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:14,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:14,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:14,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:14,526 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:14,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2023-11-06 22:48:17,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:17,876 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:17,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2023-11-06 22:48:17,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/data/aa7e46b01/21248e2838694cc992bf1ff7fe0a07d1/FLAG0395f2d89 [2023-11-06 22:48:17,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/data/aa7e46b01/21248e2838694cc992bf1ff7fe0a07d1 [2023-11-06 22:48:17,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:17,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:17,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:17,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:17,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:17,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:17" (1/1) ... [2023-11-06 22:48:17,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f08b65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:17, skipping insertion in model container [2023-11-06 22:48:17,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:17" (1/1) ... [2023-11-06 22:48:18,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:18,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:18,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:18,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:18,675 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:18,676 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:18,684 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:18,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18 WrapperNode [2023-11-06 22:48:18,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:18,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:18,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:18,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:18,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,772 INFO L138 Inliner]: procedures = 176, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2023-11-06 22:48:18,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:18,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:18,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:18,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:18,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:18,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:18,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:18,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:18,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (1/1) ... [2023-11-06 22:48:18,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:18,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:18,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:18,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1dc112e-3941-40d3-b0b8-8cb214105521/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:48:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:48:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:48:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:48:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:48:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:48:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:48:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:48:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:48:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:48:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:48:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:48:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:18,993 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:48:19,154 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:19,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:19,999 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:21,151 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:21,151 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:48:21,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:21 BoogieIcfgContainer [2023-11-06 22:48:21,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:21,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:21,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:21,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:21,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:17" (1/3) ... [2023-11-06 22:48:21,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c1d2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:21, skipping insertion in model container [2023-11-06 22:48:21,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:18" (2/3) ... [2023-11-06 22:48:21,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c1d2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:21, skipping insertion in model container [2023-11-06 22:48:21,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:21" (3/3) ... [2023-11-06 22:48:21,170 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.oepc.i [2023-11-06 22:48:21,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:21,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2023-11-06 22:48:21,191 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:48:21,468 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:48:21,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 200 transitions, 412 flow [2023-11-06 22:48:21,658 INFO L124 PetriNetUnfolderBase]: 3/197 cut-off events. [2023-11-06 22:48:21,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:21,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 197 events. 3/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 391 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-06 22:48:21,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 200 transitions, 412 flow [2023-11-06 22:48:21,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 197 transitions, 403 flow [2023-11-06 22:48:21,678 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:48:21,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 197 transitions, 403 flow [2023-11-06 22:48:21,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 197 transitions, 403 flow [2023-11-06 22:48:21,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 197 transitions, 403 flow [2023-11-06 22:48:21,756 INFO L124 PetriNetUnfolderBase]: 3/197 cut-off events. [2023-11-06 22:48:21,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 197 events. 3/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 393 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-06 22:48:21,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 10428 [2023-11-06 22:48:52,019 INFO L134 LiptonReduction]: Checked pairs total: 49296 [2023-11-06 22:48:52,020 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-11-06 22:48:52,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:52,043 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;@17a15974, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:52,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2023-11-06 22:48:52,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:48:52,045 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:48:52,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:52,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:52,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:48:52,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:48:52,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1396, now seen corresponding path program 1 times [2023-11-06 22:48:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961268954] [2023-11-06 22:48:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961268954] [2023-11-06 22:48:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961268954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:48:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376401024] [2023-11-06 22:48:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:48:52,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:48:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:48:52,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 373 [2023-11-06 22:48:52,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 199 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:52,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:52,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 373 [2023-11-06 22:48:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:58,822 INFO L124 PetriNetUnfolderBase]: 17324/24361 cut-off events. [2023-11-06 22:48:58,822 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:48:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48718 conditions, 24361 events. 17324/24361 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2174. Compared 168712 event pairs, 17324 based on Foata normal form. 0/9946 useless extension candidates. Maximal degree in co-relation 48707. Up to 24261 conditions per place. [2023-11-06 22:48:59,057 INFO L140 encePairwiseOnDemand]: 330/373 looper letters, 44 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-11-06 22:48:59,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 197 flow [2023-11-06 22:48:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:48:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:48:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 353 transitions. [2023-11-06 22:48:59,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47319034852546915 [2023-11-06 22:48:59,081 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 353 transitions. [2023-11-06 22:48:59,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 353 transitions. [2023-11-06 22:48:59,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:59,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 353 transitions. [2023-11-06 22:48:59,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,102 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,104 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 199 flow. Second operand 2 states and 353 transitions. [2023-11-06 22:48:59,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 197 flow [2023-11-06 22:48:59,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:48:59,116 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 106 flow [2023-11-06 22:48:59,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-06 22:48:59,123 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -45 predicate places. [2023-11-06 22:48:59,124 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 106 flow [2023-11-06 22:48:59,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:59,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:48:59,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:59,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:48:59,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1381650, now seen corresponding path program 1 times [2023-11-06 22:48:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70165943] [2023-11-06 22:48:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70165943] [2023-11-06 22:48:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70165943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:48:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406694] [2023-11-06 22:48:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:59,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 373 [2023-11-06 22:48:59,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:59,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 373 [2023-11-06 22:48:59,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:02,398 INFO L124 PetriNetUnfolderBase]: 5696/8190 cut-off events. [2023-11-06 22:49:02,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:49:02,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16384 conditions, 8190 events. 5696/8190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 50081 event pairs, 5696 based on Foata normal form. 404/4936 useless extension candidates. Maximal degree in co-relation 16381. Up to 8133 conditions per place. [2023-11-06 22:49:02,460 INFO L140 encePairwiseOnDemand]: 362/373 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-06 22:49:02,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 156 flow [2023-11-06 22:49:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-06 22:49:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38873994638069703 [2023-11-06 22:49:02,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-06 22:49:02,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-06 22:49:02,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:02,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-06 22:49:02,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,479 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 106 flow. Second operand 3 states and 435 transitions. [2023-11-06 22:49:02,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 156 flow [2023-11-06 22:49:02,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:49:02,483 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 88 flow [2023-11-06 22:49:02,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-06 22:49:02,485 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -53 predicate places. [2023-11-06 22:49:02,485 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 88 flow [2023-11-06 22:49:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:02,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:49:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:49:02,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:02,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:02,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1381649, now seen corresponding path program 1 times [2023-11-06 22:49:02,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:02,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748166270] [2023-11-06 22:49:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:02,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:02,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748166270] [2023-11-06 22:49:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748166270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:02,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280152921] [2023-11-06 22:49:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:02,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:02,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 373 [2023-11-06 22:49:02,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:02,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 373 [2023-11-06 22:49:02,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:04,631 INFO L124 PetriNetUnfolderBase]: 5077/7862 cut-off events. [2023-11-06 22:49:04,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:49:04,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 7862 events. 5077/7862 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 49678 event pairs, 2879 based on Foata normal form. 0/5878 useless extension candidates. Maximal degree in co-relation 15662. Up to 4172 conditions per place. [2023-11-06 22:49:04,699 INFO L140 encePairwiseOnDemand]: 351/373 looper letters, 38 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2023-11-06 22:49:04,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 206 flow [2023-11-06 22:49:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-06 22:49:04,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38873994638069703 [2023-11-06 22:49:04,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-06 22:49:04,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-06 22:49:04,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:04,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-06 22:49:04,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,711 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 88 flow. Second operand 3 states and 435 transitions. [2023-11-06 22:49:04,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 206 flow [2023-11-06 22:49:04,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:04,714 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 177 flow [2023-11-06 22:49:04,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 22:49:04,715 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -53 predicate places. [2023-11-06 22:49:04,716 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 177 flow [2023-11-06 22:49:04,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:04,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:04,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:49:04,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:04,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 349855650, now seen corresponding path program 1 times [2023-11-06 22:49:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:04,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729695354] [2023-11-06 22:49:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729695354] [2023-11-06 22:49:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729695354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879322645] [2023-11-06 22:49:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:05,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:05,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-06 22:49:05,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:05,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:05,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-06 22:49:05,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:07,130 INFO L124 PetriNetUnfolderBase]: 4658/7627 cut-off events. [2023-11-06 22:49:07,130 INFO L125 PetriNetUnfolderBase]: For 2691/2827 co-relation queries the response was YES. [2023-11-06 22:49:07,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21065 conditions, 7627 events. 4658/7627 cut-off events. For 2691/2827 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 53174 event pairs, 1875 based on Foata normal form. 0/6582 useless extension candidates. Maximal degree in co-relation 21060. Up to 4131 conditions per place. [2023-11-06 22:49:07,202 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 67 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-06 22:49:07,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 433 flow [2023-11-06 22:49:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-11-06 22:49:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066130473637176 [2023-11-06 22:49:07,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-11-06 22:49:07,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-11-06 22:49:07,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:07,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-11-06 22:49:07,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,214 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 177 flow. Second operand 3 states and 455 transitions. [2023-11-06 22:49:07,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 433 flow [2023-11-06 22:49:07,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:07,243 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 168 flow [2023-11-06 22:49:07,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-06 22:49:07,244 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -52 predicate places. [2023-11-06 22:49:07,245 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 168 flow [2023-11-06 22:49:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:49:07,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:07,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 349855887, now seen corresponding path program 1 times [2023-11-06 22:49:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:07,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441794102] [2023-11-06 22:49:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:07,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:07,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441794102] [2023-11-06 22:49:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441794102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528296347] [2023-11-06 22:49:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:07,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 373 [2023-11-06 22:49:07,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:07,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 373 [2023-11-06 22:49:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:09,090 INFO L124 PetriNetUnfolderBase]: 6064/9420 cut-off events. [2023-11-06 22:49:09,090 INFO L125 PetriNetUnfolderBase]: For 2672/2765 co-relation queries the response was YES. [2023-11-06 22:49:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25600 conditions, 9420 events. 6064/9420 cut-off events. For 2672/2765 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 61458 event pairs, 1695 based on Foata normal form. 12/7368 useless extension candidates. Maximal degree in co-relation 25594. Up to 7899 conditions per place. [2023-11-06 22:49:09,171 INFO L140 encePairwiseOnDemand]: 369/373 looper letters, 68 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-06 22:49:09,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 420 flow [2023-11-06 22:49:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-06 22:49:09,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40125111706881145 [2023-11-06 22:49:09,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-06 22:49:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-06 22:49:09,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:09,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-06 22:49:09,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:09,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:09,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:09,181 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 168 flow. Second operand 3 states and 449 transitions. [2023-11-06 22:49:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 420 flow [2023-11-06 22:49:09,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:09,184 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 181 flow [2023-11-06 22:49:09,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-06 22:49:09,188 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -51 predicate places. [2023-11-06 22:49:09,188 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 181 flow [2023-11-06 22:49:09,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:09,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:09,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:09,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:49:09,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:09,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:09,190 INFO L85 PathProgramCache]: Analyzing trace with hash 16252034, now seen corresponding path program 1 times [2023-11-06 22:49:09,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:09,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201815008] [2023-11-06 22:49:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:09,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201815008] [2023-11-06 22:49:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201815008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083492582] [2023-11-06 22:49:10,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:10,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:10,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:10,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 373 [2023-11-06 22:49:10,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:10,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:10,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 373 [2023-11-06 22:49:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:12,911 INFO L124 PetriNetUnfolderBase]: 9367/14620 cut-off events. [2023-11-06 22:49:12,911 INFO L125 PetriNetUnfolderBase]: For 2126/2126 co-relation queries the response was YES. [2023-11-06 22:49:12,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40913 conditions, 14620 events. 9367/14620 cut-off events. For 2126/2126 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 99878 event pairs, 3387 based on Foata normal form. 140/11498 useless extension candidates. Maximal degree in co-relation 40906. Up to 6324 conditions per place. [2023-11-06 22:49:13,030 INFO L140 encePairwiseOnDemand]: 352/373 looper letters, 120 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2023-11-06 22:49:13,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 145 transitions, 807 flow [2023-11-06 22:49:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 952 transitions. [2023-11-06 22:49:13,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3646112600536193 [2023-11-06 22:49:13,039 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 952 transitions. [2023-11-06 22:49:13,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 952 transitions. [2023-11-06 22:49:13,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:13,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 952 transitions. [2023-11-06 22:49:13,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:13,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:13,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:13,061 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 181 flow. Second operand 7 states and 952 transitions. [2023-11-06 22:49:13,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 145 transitions, 807 flow [2023-11-06 22:49:13,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 145 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:13,069 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 381 flow [2023-11-06 22:49:13,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2023-11-06 22:49:13,072 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -45 predicate places. [2023-11-06 22:49:13,077 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 381 flow [2023-11-06 22:49:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:13,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:13,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:49:13,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:13,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1916721191, now seen corresponding path program 1 times [2023-11-06 22:49:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:13,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846546113] [2023-11-06 22:49:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846546113] [2023-11-06 22:49:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846546113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:14,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826306811] [2023-11-06 22:49:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:14,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:14,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:14,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 373 [2023-11-06 22:49:14,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:14,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:14,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 373 [2023-11-06 22:49:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:17,099 INFO L124 PetriNetUnfolderBase]: 9250/14458 cut-off events. [2023-11-06 22:49:17,099 INFO L125 PetriNetUnfolderBase]: For 8707/8707 co-relation queries the response was YES. [2023-11-06 22:49:17,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49187 conditions, 14458 events. 9250/14458 cut-off events. For 8707/8707 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 99376 event pairs, 3129 based on Foata normal form. 22/12538 useless extension candidates. Maximal degree in co-relation 49177. Up to 12470 conditions per place. [2023-11-06 22:49:17,197 INFO L140 encePairwiseOnDemand]: 364/373 looper letters, 108 selfloop transitions, 32 changer transitions 0/142 dead transitions. [2023-11-06 22:49:17,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 142 transitions, 1075 flow [2023-11-06 22:49:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-11-06 22:49:17,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3324396782841823 [2023-11-06 22:49:17,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-11-06 22:49:17,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-11-06 22:49:17,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:17,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-11-06 22:49:17,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,213 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 381 flow. Second operand 7 states and 868 transitions. [2023-11-06 22:49:17,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 142 transitions, 1075 flow [2023-11-06 22:49:17,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 1075 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:49:17,679 INFO L231 Difference]: Finished difference. Result has 67 places, 96 transitions, 702 flow [2023-11-06 22:49:17,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=67, PETRI_TRANSITIONS=96} [2023-11-06 22:49:17,680 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -36 predicate places. [2023-11-06 22:49:17,680 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 96 transitions, 702 flow [2023-11-06 22:49:17,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:17,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:49:17,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:17,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash 187686280, now seen corresponding path program 1 times [2023-11-06 22:49:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:17,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322322301] [2023-11-06 22:49:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:17,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:18,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:18,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322322301] [2023-11-06 22:49:18,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322322301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:18,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:18,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:49:18,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453771942] [2023-11-06 22:49:18,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:18,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 373 [2023-11-06 22:49:18,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 96 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:18,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:18,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 373 [2023-11-06 22:49:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:21,302 INFO L124 PetriNetUnfolderBase]: 11599/18038 cut-off events. [2023-11-06 22:49:21,303 INFO L125 PetriNetUnfolderBase]: For 16676/16676 co-relation queries the response was YES. [2023-11-06 22:49:21,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67317 conditions, 18038 events. 11599/18038 cut-off events. For 16676/16676 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 126350 event pairs, 5674 based on Foata normal form. 35/15380 useless extension candidates. Maximal degree in co-relation 67303. Up to 13871 conditions per place. [2023-11-06 22:49:21,436 INFO L140 encePairwiseOnDemand]: 362/373 looper letters, 105 selfloop transitions, 36 changer transitions 0/145 dead transitions. [2023-11-06 22:49:21,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 145 transitions, 1307 flow [2023-11-06 22:49:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:49:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-11-06 22:49:21,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753351206434316 [2023-11-06 22:49:21,440 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-11-06 22:49:21,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-11-06 22:49:21,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:21,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-11-06 22:49:21,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:21,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:21,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:21,446 INFO L175 Difference]: Start difference. First operand has 67 places, 96 transitions, 702 flow. Second operand 4 states and 560 transitions. [2023-11-06 22:49:21,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 145 transitions, 1307 flow [2023-11-06 22:49:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 145 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:22,101 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 992 flow [2023-11-06 22:49:22,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=992, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2023-11-06 22:49:22,102 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -33 predicate places. [2023-11-06 22:49:22,102 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 992 flow [2023-11-06 22:49:22,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:22,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:22,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:22,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:49:22,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:22,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 187612810, now seen corresponding path program 2 times [2023-11-06 22:49:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572141952] [2023-11-06 22:49:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572141952] [2023-11-06 22:49:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572141952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109522285] [2023-11-06 22:49:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 373 [2023-11-06 22:49:22,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 992 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:22,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:22,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 373 [2023-11-06 22:49:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:27,038 INFO L124 PetriNetUnfolderBase]: 13745/21033 cut-off events. [2023-11-06 22:49:27,039 INFO L125 PetriNetUnfolderBase]: For 30466/30466 co-relation queries the response was YES. [2023-11-06 22:49:27,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86323 conditions, 21033 events. 13745/21033 cut-off events. For 30466/30466 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 148575 event pairs, 5865 based on Foata normal form. 34/18349 useless extension candidates. Maximal degree in co-relation 86307. Up to 14367 conditions per place. [2023-11-06 22:49:27,188 INFO L140 encePairwiseOnDemand]: 363/373 looper letters, 194 selfloop transitions, 40 changer transitions 0/238 dead transitions. [2023-11-06 22:49:27,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 238 transitions, 2300 flow [2023-11-06 22:49:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:49:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2023-11-06 22:49:27,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39195710455764077 [2023-11-06 22:49:27,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2023-11-06 22:49:27,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2023-11-06 22:49:27,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:27,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2023-11-06 22:49:27,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,203 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,203 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 992 flow. Second operand 5 states and 731 transitions. [2023-11-06 22:49:27,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 238 transitions, 2300 flow [2023-11-06 22:49:28,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 238 transitions, 2234 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:28,141 INFO L231 Difference]: Finished difference. Result has 75 places, 151 transitions, 1422 flow [2023-11-06 22:49:28,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1422, PETRI_PLACES=75, PETRI_TRANSITIONS=151} [2023-11-06 22:49:28,142 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -28 predicate places. [2023-11-06 22:49:28,142 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 151 transitions, 1422 flow [2023-11-06 22:49:28,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:28,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:28,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:28,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:49:28,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:28,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1204095909, now seen corresponding path program 1 times [2023-11-06 22:49:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:28,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799666852] [2023-11-06 22:49:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799666852] [2023-11-06 22:49:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799666852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804956614] [2023-11-06 22:49:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:28,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 373 [2023-11-06 22:49:28,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 151 transitions, 1422 flow. Second operand has 5 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:28,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:28,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 373 [2023-11-06 22:49:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:32,397 INFO L124 PetriNetUnfolderBase]: 12690/18955 cut-off events. [2023-11-06 22:49:32,397 INFO L125 PetriNetUnfolderBase]: For 37615/37615 co-relation queries the response was YES. [2023-11-06 22:49:32,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83283 conditions, 18955 events. 12690/18955 cut-off events. For 37615/37615 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 121391 event pairs, 3948 based on Foata normal form. 303/16831 useless extension candidates. Maximal degree in co-relation 83264. Up to 8816 conditions per place. [2023-11-06 22:49:32,540 INFO L140 encePairwiseOnDemand]: 354/373 looper letters, 181 selfloop transitions, 61 changer transitions 0/242 dead transitions. [2023-11-06 22:49:32,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 242 transitions, 2712 flow [2023-11-06 22:49:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:49:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 679 transitions. [2023-11-06 22:49:32,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640750670241287 [2023-11-06 22:49:32,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 679 transitions. [2023-11-06 22:49:32,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 679 transitions. [2023-11-06 22:49:32,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:32,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 679 transitions. [2023-11-06 22:49:32,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:32,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:32,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:32,551 INFO L175 Difference]: Start difference. First operand has 75 places, 151 transitions, 1422 flow. Second operand 5 states and 679 transitions. [2023-11-06 22:49:32,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 242 transitions, 2712 flow [2023-11-06 22:49:33,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 242 transitions, 2677 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:33,227 INFO L231 Difference]: Finished difference. Result has 81 places, 188 transitions, 2105 flow [2023-11-06 22:49:33,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2105, PETRI_PLACES=81, PETRI_TRANSITIONS=188} [2023-11-06 22:49:33,229 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -22 predicate places. [2023-11-06 22:49:33,229 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 188 transitions, 2105 flow [2023-11-06 22:49:33,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:33,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:33,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:33,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:49:33,230 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:33,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1696761658, now seen corresponding path program 1 times [2023-11-06 22:49:33,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947049408] [2023-11-06 22:49:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947049408] [2023-11-06 22:49:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947049408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372203092] [2023-11-06 22:49:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:34,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 373 [2023-11-06 22:49:34,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 188 transitions, 2105 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:34,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:34,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 373 [2023-11-06 22:49:34,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:38,754 INFO L124 PetriNetUnfolderBase]: 14086/22230 cut-off events. [2023-11-06 22:49:38,754 INFO L125 PetriNetUnfolderBase]: For 66917/66917 co-relation queries the response was YES. [2023-11-06 22:49:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110013 conditions, 22230 events. 14086/22230 cut-off events. For 66917/66917 co-relation queries the response was YES. Maximal size of possible extension queue 1485. Compared 165804 event pairs, 4861 based on Foata normal form. 90/19276 useless extension candidates. Maximal degree in co-relation 109992. Up to 10729 conditions per place. [2023-11-06 22:49:38,976 INFO L140 encePairwiseOnDemand]: 361/373 looper letters, 184 selfloop transitions, 80 changer transitions 0/268 dead transitions. [2023-11-06 22:49:38,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 268 transitions, 3391 flow [2023-11-06 22:49:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:49:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2023-11-06 22:49:38,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780160857908847 [2023-11-06 22:49:38,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2023-11-06 22:49:38,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2023-11-06 22:49:38,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:38,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2023-11-06 22:49:38,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:38,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:38,988 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:38,988 INFO L175 Difference]: Start difference. First operand has 81 places, 188 transitions, 2105 flow. Second operand 5 states and 705 transitions. [2023-11-06 22:49:38,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 268 transitions, 3391 flow [2023-11-06 22:49:40,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 268 transitions, 3337 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-11-06 22:49:40,666 INFO L231 Difference]: Finished difference. Result has 86 places, 194 transitions, 2353 flow [2023-11-06 22:49:40,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2353, PETRI_PLACES=86, PETRI_TRANSITIONS=194} [2023-11-06 22:49:40,668 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -17 predicate places. [2023-11-06 22:49:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 194 transitions, 2353 flow [2023-11-06 22:49:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:40,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:40,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:49:40,669 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:40,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -107017076, now seen corresponding path program 2 times [2023-11-06 22:49:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:40,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115072027] [2023-11-06 22:49:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115072027] [2023-11-06 22:49:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115072027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:41,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482109713] [2023-11-06 22:49:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:41,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:49:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:49:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:41,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 373 [2023-11-06 22:49:41,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 194 transitions, 2353 flow. Second operand has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:41,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:41,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 373 [2023-11-06 22:49:41,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:49,036 INFO L124 PetriNetUnfolderBase]: 16020/26459 cut-off events. [2023-11-06 22:49:49,037 INFO L125 PetriNetUnfolderBase]: For 94241/94241 co-relation queries the response was YES. [2023-11-06 22:49:49,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134825 conditions, 26459 events. 16020/26459 cut-off events. For 94241/94241 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 220747 event pairs, 1346 based on Foata normal form. 1210/24244 useless extension candidates. Maximal degree in co-relation 134802. Up to 9367 conditions per place. [2023-11-06 22:49:49,290 INFO L140 encePairwiseOnDemand]: 350/373 looper letters, 180 selfloop transitions, 300 changer transitions 0/482 dead transitions. [2023-11-06 22:49:49,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 482 transitions, 6437 flow [2023-11-06 22:49:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:49:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1822 transitions. [2023-11-06 22:49:49,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489084641899655 [2023-11-06 22:49:49,298 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1822 transitions. [2023-11-06 22:49:49,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1822 transitions. [2023-11-06 22:49:49,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:49,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1822 transitions. [2023-11-06 22:49:49,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.14285714285714) internal successors, (1822), 14 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:49,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 373.0) internal successors, (5595), 15 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:49,315 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 373.0) internal successors, (5595), 15 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:49,315 INFO L175 Difference]: Start difference. First operand has 86 places, 194 transitions, 2353 flow. Second operand 14 states and 1822 transitions. [2023-11-06 22:49:49,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 482 transitions, 6437 flow [2023-11-06 22:49:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 482 transitions, 6237 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:49:51,493 INFO L231 Difference]: Finished difference. Result has 102 places, 373 transitions, 5551 flow [2023-11-06 22:49:51,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5551, PETRI_PLACES=102, PETRI_TRANSITIONS=373} [2023-11-06 22:49:51,494 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2023-11-06 22:49:51,494 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 373 transitions, 5551 flow [2023-11-06 22:49:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:51,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:51,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:51,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:49:51,496 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:49:51,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1327730080, now seen corresponding path program 1 times [2023-11-06 22:49:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430705134] [2023-11-06 22:49:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:51,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430705134] [2023-11-06 22:49:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430705134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:51,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968719854] [2023-11-06 22:49:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:49:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:49:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:52,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 373 [2023-11-06 22:49:52,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 373 transitions, 5551 flow. Second operand has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:52,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:52,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 373 [2023-11-06 22:49:52,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:59,162 INFO L124 PetriNetUnfolderBase]: 13459/22317 cut-off events. [2023-11-06 22:49:59,162 INFO L125 PetriNetUnfolderBase]: For 121787/121787 co-relation queries the response was YES. [2023-11-06 22:49:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135370 conditions, 22317 events. 13459/22317 cut-off events. For 121787/121787 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 179672 event pairs, 2708 based on Foata normal form. 409/20372 useless extension candidates. Maximal degree in co-relation 135341. Up to 8912 conditions per place. [2023-11-06 22:49:59,403 INFO L140 encePairwiseOnDemand]: 353/373 looper letters, 301 selfloop transitions, 219 changer transitions 0/522 dead transitions. [2023-11-06 22:49:59,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 522 transitions, 8306 flow [2023-11-06 22:49:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 917 transitions. [2023-11-06 22:49:59,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512064343163539 [2023-11-06 22:49:59,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 917 transitions. [2023-11-06 22:49:59,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 917 transitions. [2023-11-06 22:49:59,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:59,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 917 transitions. [2023-11-06 22:49:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:59,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:59,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:59,418 INFO L175 Difference]: Start difference. First operand has 102 places, 373 transitions, 5551 flow. Second operand 7 states and 917 transitions. [2023-11-06 22:49:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 522 transitions, 8306 flow [2023-11-06 22:50:01,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 522 transitions, 7931 flow, removed 187 selfloop flow, removed 1 redundant places. [2023-11-06 22:50:01,548 INFO L231 Difference]: Finished difference. Result has 110 places, 425 transitions, 6941 flow [2023-11-06 22:50:01,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6941, PETRI_PLACES=110, PETRI_TRANSITIONS=425} [2023-11-06 22:50:01,549 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 7 predicate places. [2023-11-06 22:50:01,550 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 425 transitions, 6941 flow [2023-11-06 22:50:01,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:01,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:01,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:01,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:50:01,551 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:50:01,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1327730034, now seen corresponding path program 1 times [2023-11-06 22:50:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952611742] [2023-11-06 22:50:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:02,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:02,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952611742] [2023-11-06 22:50:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952611742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:02,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:02,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:50:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120381227] [2023-11-06 22:50:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:02,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:50:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:50:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:50:02,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 373 [2023-11-06 22:50:02,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 425 transitions, 6941 flow. Second operand has 8 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:02,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 373 [2023-11-06 22:50:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:07,465 INFO L124 PetriNetUnfolderBase]: 9161/15338 cut-off events. [2023-11-06 22:50:07,465 INFO L125 PetriNetUnfolderBase]: For 100311/100755 co-relation queries the response was YES. [2023-11-06 22:50:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96675 conditions, 15338 events. 9161/15338 cut-off events. For 100311/100755 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 118151 event pairs, 1665 based on Foata normal form. 113/14730 useless extension candidates. Maximal degree in co-relation 96644. Up to 5553 conditions per place. [2023-11-06 22:50:07,642 INFO L140 encePairwiseOnDemand]: 366/373 looper letters, 266 selfloop transitions, 55 changer transitions 24/469 dead transitions. [2023-11-06 22:50:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 469 transitions, 7968 flow [2023-11-06 22:50:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:50:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 878 transitions. [2023-11-06 22:50:07,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33626962849482955 [2023-11-06 22:50:07,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 878 transitions. [2023-11-06 22:50:07,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 878 transitions. [2023-11-06 22:50:07,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:07,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 878 transitions. [2023-11-06 22:50:07,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,657 INFO L175 Difference]: Start difference. First operand has 110 places, 425 transitions, 6941 flow. Second operand 7 states and 878 transitions. [2023-11-06 22:50:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 469 transitions, 7968 flow [2023-11-06 22:50:08,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 469 transitions, 7960 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-06 22:50:08,855 INFO L231 Difference]: Finished difference. Result has 115 places, 386 transitions, 6390 flow [2023-11-06 22:50:08,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=6634, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6390, PETRI_PLACES=115, PETRI_TRANSITIONS=386} [2023-11-06 22:50:08,856 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 12 predicate places. [2023-11-06 22:50:08,856 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 386 transitions, 6390 flow [2023-11-06 22:50:08,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:08,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:50:08,857 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-06 22:50:08,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1456927541, now seen corresponding path program 1 times [2023-11-06 22:50:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:08,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330952769] [2023-11-06 22:50:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330952769] [2023-11-06 22:50:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330952769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913575423] [2023-11-06 22:50:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 373 [2023-11-06 22:50:08,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 386 transitions, 6390 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:08,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 373 [2023-11-06 22:50:08,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand