./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 384baf663e8fa66fe4dacec773bc2c5acf71b0d621e6212d04013b3fa3b41d51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:18,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:18,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:10:18,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:18,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:18,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:18,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:18,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:18,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:18,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:18,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:18,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:18,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:18,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:18,175 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:18,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:18,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:18,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:18,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:18,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:18,177 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:10:18,178 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:10:18,178 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:10:18,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:18,179 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:10:18,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:18,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:18,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:18,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:18,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:18,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:18,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:18,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:18,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:18,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:18,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:18,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:18,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:18,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:18,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:18,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:18,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:18,187 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_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384baf663e8fa66fe4dacec773bc2c5acf71b0d621e6212d04013b3fa3b41d51 [2024-10-31 22:10:18,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:18,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:18,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:18,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:18,518 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:18,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe008_power.opt.i Unable to find full path for "g++" [2024-10-31 22:10:20,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:20,919 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:20,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/sv-benchmarks/c/pthread-wmm/safe008_power.opt.i [2024-10-31 22:10:20,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/data/2c1f37392/58ea0e1697dd4317b3da7eacb43626b8/FLAG892728764 [2024-10-31 22:10:20,960 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/data/2c1f37392/58ea0e1697dd4317b3da7eacb43626b8 [2024-10-31 22:10:20,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:20,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:20,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:20,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:20,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:20,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:20" (1/1) ... [2024-10-31 22:10:20,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa6130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:20, skipping insertion in model container [2024-10-31 22:10:20,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:20" (1/1) ... [2024-10-31 22:10:21,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:21,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:21,615 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:21,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:21,779 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:21,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21 WrapperNode [2024-10-31 22:10:21,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:21,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:21,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:21,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:21,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,871 INFO L138 Inliner]: procedures = 175, calls = 62, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 173 [2024-10-31 22:10:21,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:21,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:21,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:21,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:21,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,898 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,977 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [18, 2]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2]. The 6 writes are split as follows [6, 0]. [2024-10-31 22:10:21,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:22,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:22,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:22,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:22,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:22,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:22,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:22,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:22,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1212ee9-ec11-414b-b557-800da17c3865/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:10:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:10:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:10:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:10:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:10:22,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:10:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:22,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:22,150 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:22,326 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:22,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:23,096 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:23,096 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:23,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:23,807 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:10:23,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:23 BoogieIcfgContainer [2024-10-31 22:10:23,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:23,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:23,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:23,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:23,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:20" (1/3) ... [2024-10-31 22:10:23,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9b745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:23, skipping insertion in model container [2024-10-31 22:10:23,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21" (2/3) ... [2024-10-31 22:10:23,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9b745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:23, skipping insertion in model container [2024-10-31 22:10:23,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:23" (3/3) ... [2024-10-31 22:10:23,823 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.opt.i [2024-10-31 22:10:23,846 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:23,846 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-10-31 22:10:23,846 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:24,069 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:24,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 78 transitions, 168 flow [2024-10-31 22:10:24,198 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2024-10-31 22:10:24,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:24,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 293 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2024-10-31 22:10:24,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 78 transitions, 168 flow [2024-10-31 22:10:24,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 75 transitions, 159 flow [2024-10-31 22:10:24,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:24,240 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@9e095d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:24,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-10-31 22:10:24,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:24,248 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-31 22:10:24,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:24,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:24,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:10:24,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:24,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 839398171, now seen corresponding path program 1 times [2024-10-31 22:10:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:24,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724813878] [2024-10-31 22:10:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:24,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724813878] [2024-10-31 22:10:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724813878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784526297] [2024-10-31 22:10:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:24,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:25,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:25,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:10:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:25,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:25,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:33,870 INFO L124 PetriNetUnfolderBase]: 21849/31893 cut-off events. [2024-10-31 22:10:33,870 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-31 22:10:33,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62502 conditions, 31893 events. 21849/31893 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 3500. Compared 278273 event pairs, 1794 based on Foata normal form. 1120/15404 useless extension candidates. Maximal degree in co-relation 62491. Up to 27560 conditions per place. [2024-10-31 22:10:34,190 INFO L140 encePairwiseOnDemand]: 59/78 looper letters, 73 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-10-31 22:10:34,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 345 flow [2024-10-31 22:10:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-10-31 22:10:34,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-10-31 22:10:34,210 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 159 flow. Second operand 3 states and 162 transitions. [2024-10-31 22:10:34,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 345 flow [2024-10-31 22:10:34,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:34,226 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 124 flow [2024-10-31 22:10:34,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-10-31 22:10:34,237 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -17 predicate places. [2024-10-31 22:10:34,237 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 124 flow [2024-10-31 22:10:34,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 22:10:34,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:34,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:34,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:34,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:34,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 250602757, now seen corresponding path program 1 times [2024-10-31 22:10:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823725858] [2024-10-31 22:10:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823725858] [2024-10-31 22:10:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823725858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:34,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:34,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928932976] [2024-10-31 22:10:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:34,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:34,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:34,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-31 22:10:34,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:34,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:34,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:37,620 INFO L124 PetriNetUnfolderBase]: 6742/10734 cut-off events. [2024-10-31 22:10:37,621 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2024-10-31 22:10:37,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20876 conditions, 10734 events. 6742/10734 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 85478 event pairs, 6742 based on Foata normal form. 0/6507 useless extension candidates. Maximal degree in co-relation 20866. Up to 9569 conditions per place. [2024-10-31 22:10:37,704 INFO L140 encePairwiseOnDemand]: 68/78 looper letters, 32 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-10-31 22:10:37,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 172 flow [2024-10-31 22:10:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-31 22:10:37,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-10-31 22:10:37,707 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 124 flow. Second operand 3 states and 96 transitions. [2024-10-31 22:10:37,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 172 flow [2024-10-31 22:10:37,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:37,709 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 104 flow [2024-10-31 22:10:37,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-31 22:10:37,710 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -26 predicate places. [2024-10-31 22:10:37,711 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 104 flow [2024-10-31 22:10:37,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-31 22:10:37,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:37,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:10:37,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:37,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:37,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 250602758, now seen corresponding path program 1 times [2024-10-31 22:10:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195122985] [2024-10-31 22:10:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:37,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:37,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195122985] [2024-10-31 22:10:37,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195122985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:37,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:37,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597285125] [2024-10-31 22:10:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:37,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:37,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:37,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-31 22:10:37,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:37,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:37,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:38,398 INFO L124 PetriNetUnfolderBase]: 1151/2022 cut-off events. [2024-10-31 22:10:38,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 2022 events. 1151/2022 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13373 event pairs, 1151 based on Foata normal form. 0/1872 useless extension candidates. Maximal degree in co-relation 3782. Up to 1720 conditions per place. [2024-10-31 22:10:38,409 INFO L140 encePairwiseOnDemand]: 68/78 looper letters, 22 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-10-31 22:10:38,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 134 flow [2024-10-31 22:10:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-31 22:10:38,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-10-31 22:10:38,413 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 104 flow. Second operand 3 states and 87 transitions. [2024-10-31 22:10:38,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 134 flow [2024-10-31 22:10:38,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:38,415 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 85 flow [2024-10-31 22:10:38,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-31 22:10:38,417 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -34 predicate places. [2024-10-31 22:10:38,417 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 85 flow [2024-10-31 22:10:38,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-31 22:10:38,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:38,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:38,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:38,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:38,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1412301609, now seen corresponding path program 1 times [2024-10-31 22:10:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418069480] [2024-10-31 22:10:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418069480] [2024-10-31 22:10:38,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418069480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:38,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:38,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265099661] [2024-10-31 22:10:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:38,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:38,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:38,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:10:38,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:38,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:38,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:39,154 INFO L124 PetriNetUnfolderBase]: 989/1773 cut-off events. [2024-10-31 22:10:39,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:39,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3306 conditions, 1773 events. 989/1773 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11565 event pairs, 185 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 3299. Up to 1237 conditions per place. [2024-10-31 22:10:39,167 INFO L140 encePairwiseOnDemand]: 74/78 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-10-31 22:10:39,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 189 flow [2024-10-31 22:10:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-31 22:10:39,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-10-31 22:10:39,170 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 85 flow. Second operand 3 states and 93 transitions. [2024-10-31 22:10:39,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 189 flow [2024-10-31 22:10:39,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:39,172 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2024-10-31 22:10:39,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-10-31 22:10:39,174 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -33 predicate places. [2024-10-31 22:10:39,174 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2024-10-31 22:10:39,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:10:39,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:39,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:39,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:39,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:39,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -912569264, now seen corresponding path program 1 times [2024-10-31 22:10:39,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197326512] [2024-10-31 22:10:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197326512] [2024-10-31 22:10:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197326512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:39,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:39,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859871435] [2024-10-31 22:10:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:39,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:39,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:39,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-31 22:10:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:39,926 INFO L124 PetriNetUnfolderBase]: 914/1662 cut-off events. [2024-10-31 22:10:39,926 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-10-31 22:10:39,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3330 conditions, 1662 events. 914/1662 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10761 event pairs, 161 based on Foata normal form. 0/1644 useless extension candidates. Maximal degree in co-relation 3321. Up to 1125 conditions per place. [2024-10-31 22:10:39,934 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 34 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-10-31 22:10:39,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 192 flow [2024-10-31 22:10:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-31 22:10:39,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34935897435897434 [2024-10-31 22:10:39,936 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 4 states and 109 transitions. [2024-10-31 22:10:39,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 192 flow [2024-10-31 22:10:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:39,939 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 90 flow [2024-10-31 22:10:39,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-10-31 22:10:39,940 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -33 predicate places. [2024-10-31 22:10:39,941 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 90 flow [2024-10-31 22:10:39,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-31 22:10:39,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:39,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:39,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:39,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:39,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -12128729, now seen corresponding path program 1 times [2024-10-31 22:10:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332174099] [2024-10-31 22:10:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:39,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332174099] [2024-10-31 22:10:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332174099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788979463] [2024-10-31 22:10:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:40,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 78 [2024-10-31 22:10:40,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-31 22:10:40,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:40,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 78 [2024-10-31 22:10:40,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:40,737 INFO L124 PetriNetUnfolderBase]: 839/1519 cut-off events. [2024-10-31 22:10:40,737 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-31 22:10:40,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 1519 events. 839/1519 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9290 event pairs, 265 based on Foata normal form. 36/1537 useless extension candidates. Maximal degree in co-relation 3031. Up to 1014 conditions per place. [2024-10-31 22:10:40,745 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-31 22:10:40,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 186 flow [2024-10-31 22:10:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-10-31 22:10:40,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-10-31 22:10:40,747 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 90 flow. Second operand 4 states and 108 transitions. [2024-10-31 22:10:40,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 186 flow [2024-10-31 22:10:40,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 181 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:40,748 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 85 flow [2024-10-31 22:10:40,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-10-31 22:10:40,749 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -34 predicate places. [2024-10-31 22:10:40,749 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 85 flow [2024-10-31 22:10:40,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-31 22:10:40,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:40,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:40,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:40,750 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:40,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1206103162, now seen corresponding path program 1 times [2024-10-31 22:10:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:40,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773093844] [2024-10-31 22:10:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:40,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773093844] [2024-10-31 22:10:40,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773093844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:40,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:40,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:10:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582775891] [2024-10-31 22:10:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:40,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 78 [2024-10-31 22:10:40,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:10:40,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:40,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 78 [2024-10-31 22:10:40,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:41,145 INFO L124 PetriNetUnfolderBase]: 839/1518 cut-off events. [2024-10-31 22:10:41,146 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-10-31 22:10:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 1518 events. 839/1518 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9717 event pairs, 839 based on Foata normal form. 48/1512 useless extension candidates. Maximal degree in co-relation 3030. Up to 1264 conditions per place. [2024-10-31 22:10:41,155 INFO L140 encePairwiseOnDemand]: 76/78 looper letters, 19 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-10-31 22:10:41,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 125 flow [2024-10-31 22:10:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-31 22:10:41,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31196581196581197 [2024-10-31 22:10:41,157 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 85 flow. Second operand 3 states and 73 transitions. [2024-10-31 22:10:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 125 flow [2024-10-31 22:10:41,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:41,158 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 80 flow [2024-10-31 22:10:41,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-10-31 22:10:41,159 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -35 predicate places. [2024-10-31 22:10:41,159 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 80 flow [2024-10-31 22:10:41,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:10:41,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:41,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:10:41,160 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:41,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1206105066, now seen corresponding path program 1 times [2024-10-31 22:10:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:41,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268853892] [2024-10-31 22:10:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268853892] [2024-10-31 22:10:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268853892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:41,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:41,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938898242] [2024-10-31 22:10:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:41,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:41,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:41,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 78 [2024-10-31 22:10:41,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-31 22:10:41,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:41,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 78 [2024-10-31 22:10:41,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:42,370 INFO L124 PetriNetUnfolderBase]: 999/1807 cut-off events. [2024-10-31 22:10:42,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:42,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 1807 events. 999/1807 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11805 event pairs, 141 based on Foata normal form. 0/1753 useless extension candidates. Maximal degree in co-relation 3551. Up to 856 conditions per place. [2024-10-31 22:10:42,381 INFO L140 encePairwiseOnDemand]: 72/78 looper letters, 28 selfloop transitions, 2 changer transitions 39/82 dead transitions. [2024-10-31 22:10:42,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 320 flow [2024-10-31 22:10:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-10-31 22:10:42,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317307692307692 [2024-10-31 22:10:42,384 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 80 flow. Second operand 8 states and 207 transitions. [2024-10-31 22:10:42,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 320 flow [2024-10-31 22:10:42,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:42,386 INFO L231 Difference]: Finished difference. Result has 58 places, 33 transitions, 93 flow [2024-10-31 22:10:42,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=93, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2024-10-31 22:10:42,388 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -25 predicate places. [2024-10-31 22:10:42,388 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 33 transitions, 93 flow [2024-10-31 22:10:42,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-31 22:10:42,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:42,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:42,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:10:42,389 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:42,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1189699869, now seen corresponding path program 1 times [2024-10-31 22:10:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:42,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893586790] [2024-10-31 22:10:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:42,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:42,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:42,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893586790] [2024-10-31 22:10:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893586790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:42,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313162358] [2024-10-31 22:10:42,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:42,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:42,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:42,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:42,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 78 [2024-10-31 22:10:42,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 33 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-10-31 22:10:42,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:42,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 78 [2024-10-31 22:10:42,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:43,668 INFO L124 PetriNetUnfolderBase]: 964/1735 cut-off events. [2024-10-31 22:10:43,668 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-10-31 22:10:43,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1735 events. 964/1735 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10791 event pairs, 207 based on Foata normal form. 48/1765 useless extension candidates. Maximal degree in co-relation 3816. Up to 958 conditions per place. [2024-10-31 22:10:43,685 INFO L140 encePairwiseOnDemand]: 73/78 looper letters, 28 selfloop transitions, 2 changer transitions 29/71 dead transitions. [2024-10-31 22:10:43,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 302 flow [2024-10-31 22:10:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-10-31 22:10:43,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31684981684981683 [2024-10-31 22:10:43,688 INFO L175 Difference]: Start difference. First operand has 58 places, 33 transitions, 93 flow. Second operand 7 states and 173 transitions. [2024-10-31 22:10:43,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 302 flow [2024-10-31 22:10:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 280 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:43,703 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 97 flow [2024-10-31 22:10:43,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2024-10-31 22:10:43,708 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -26 predicate places. [2024-10-31 22:10:43,709 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 97 flow [2024-10-31 22:10:43,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-10-31 22:10:43,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:43,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:43,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:10:43,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:43,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1114618344, now seen corresponding path program 1 times [2024-10-31 22:10:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383775616] [2024-10-31 22:10:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:44,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:44,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383775616] [2024-10-31 22:10:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383775616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:44,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:44,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053965057] [2024-10-31 22:10:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:44,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:44,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-10-31 22:10:44,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-10-31 22:10:44,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:44,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-10-31 22:10:44,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:45,590 INFO L124 PetriNetUnfolderBase]: 1422/2441 cut-off events. [2024-10-31 22:10:45,590 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-10-31 22:10:45,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 2441 events. 1422/2441 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15536 event pairs, 323 based on Foata normal form. 48/2463 useless extension candidates. Maximal degree in co-relation 5412. Up to 790 conditions per place. [2024-10-31 22:10:45,622 INFO L140 encePairwiseOnDemand]: 72/78 looper letters, 35 selfloop transitions, 3 changer transitions 35/84 dead transitions. [2024-10-31 22:10:45,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 366 flow [2024-10-31 22:10:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-10-31 22:10:45,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-10-31 22:10:45,630 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 97 flow. Second operand 8 states and 195 transitions. [2024-10-31 22:10:45,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 366 flow [2024-10-31 22:10:45,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 344 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:45,665 INFO L231 Difference]: Finished difference. Result has 60 places, 33 transitions, 107 flow [2024-10-31 22:10:45,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=107, PETRI_PLACES=60, PETRI_TRANSITIONS=33} [2024-10-31 22:10:45,666 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -23 predicate places. [2024-10-31 22:10:45,666 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 33 transitions, 107 flow [2024-10-31 22:10:45,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-10-31 22:10:45,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:45,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:45,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:10:45,668 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:45,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash -686557054, now seen corresponding path program 1 times [2024-10-31 22:10:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:45,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829741999] [2024-10-31 22:10:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:45,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829741999] [2024-10-31 22:10:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829741999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:46,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977111359] [2024-10-31 22:10:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:46,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:46,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-10-31 22:10:46,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 33 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-10-31 22:10:46,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:46,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-10-31 22:10:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:46,886 INFO L124 PetriNetUnfolderBase]: 1158/1996 cut-off events. [2024-10-31 22:10:46,886 INFO L125 PetriNetUnfolderBase]: For 937/942 co-relation queries the response was YES. [2024-10-31 22:10:46,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 1996 events. 1158/1996 cut-off events. For 937/942 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11592 event pairs, 381 based on Foata normal form. 60/2047 useless extension candidates. Maximal degree in co-relation 4495. Up to 1390 conditions per place. [2024-10-31 22:10:46,907 INFO L140 encePairwiseOnDemand]: 72/78 looper letters, 31 selfloop transitions, 3 changer transitions 29/74 dead transitions. [2024-10-31 22:10:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 338 flow [2024-10-31 22:10:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-10-31 22:10:46,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31135531135531136 [2024-10-31 22:10:46,911 INFO L175 Difference]: Start difference. First operand has 60 places, 33 transitions, 107 flow. Second operand 7 states and 170 transitions. [2024-10-31 22:10:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 338 flow [2024-10-31 22:10:46,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 299 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-10-31 22:10:46,926 INFO L231 Difference]: Finished difference. Result has 58 places, 35 transitions, 118 flow [2024-10-31 22:10:46,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=58, PETRI_TRANSITIONS=35} [2024-10-31 22:10:46,928 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -25 predicate places. [2024-10-31 22:10:46,928 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 35 transitions, 118 flow [2024-10-31 22:10:46,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-10-31 22:10:46,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:46,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:46,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:10:46,929 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-31 22:10:46,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1672154672, now seen corresponding path program 1 times [2024-10-31 22:10:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606816641] [2024-10-31 22:10:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:47,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:47,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606816641] [2024-10-31 22:10:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606816641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:47,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:47,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583277456] [2024-10-31 22:10:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:47,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:47,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:47,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 78 [2024-10-31 22:10:47,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 35 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-31 22:10:47,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:47,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 78 [2024-10-31 22:10:47,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand