./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:48,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:48,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:05:48,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:48,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:48,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:48,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:48,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:48,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:48,934 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:48,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:48,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:48,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:48,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:48,938 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:48,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:48,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:48,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:48,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:48,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:48,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:05:48,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:05:48,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:05:48,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:48,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:05:48,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:48,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:48,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:48,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:48,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:48,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:48,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:48,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:48,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:48,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:48,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:48,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:48,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:48,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:48,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:48,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:48,953 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_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2023-11-26 12:05:49,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:49,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:49,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:49,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:49,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:49,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-26 12:05:52,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:52,783 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:52,794 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-26 12:05:52,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/data/d04a1ac88/0c84d4a71dad4c3e809d60ce0213337b/FLAG97f2322e9 [2023-11-26 12:05:52,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/data/d04a1ac88/0c84d4a71dad4c3e809d60ce0213337b [2023-11-26 12:05:52,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:52,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:52,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:52,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:52,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:52,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:52" (1/1) ... [2023-11-26 12:05:52,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1982764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:52, skipping insertion in model container [2023-11-26 12:05:52,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:52" (1/1) ... [2023-11-26 12:05:52,890 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:53,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:53,327 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:53,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:53,464 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:53,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53 WrapperNode [2023-11-26 12:05:53,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:53,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:53,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:53,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:53,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,526 INFO L138 Inliner]: procedures = 166, calls = 39, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 131 [2023-11-26 12:05:53,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:53,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:53,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:53,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:53,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,545 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,562 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 16, 1]. 84 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 4 writes are split as follows [0, 3, 1]. [2023-11-26 12:05:53,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:53,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:53,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:53,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:53,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:53,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:53,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68788300-545a-4fe4-ab82-493f25e8ce64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:05:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:05:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:05:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-26 12:05:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-26 12:05:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:05:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:05:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:05:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:05:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:05:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:53,718 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:05:53,877 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:53,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:54,207 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:54,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:54,431 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:05:54,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:54 BoogieIcfgContainer [2023-11-26 12:05:54,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:54,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:54,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:54,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:54,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:52" (1/3) ... [2023-11-26 12:05:54,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a7ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:54, skipping insertion in model container [2023-11-26 12:05:54,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (2/3) ... [2023-11-26 12:05:54,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a7ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:54, skipping insertion in model container [2023-11-26 12:05:54,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:54" (3/3) ... [2023-11-26 12:05:54,443 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-26 12:05:54,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:54,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-11-26 12:05:54,465 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:05:54,526 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:05:54,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 78 transitions, 160 flow [2023-11-26 12:05:54,607 INFO L124 PetriNetUnfolderBase]: 10/77 cut-off events. [2023-11-26 12:05:54,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 10/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-26 12:05:54,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 78 transitions, 160 flow [2023-11-26 12:05:54,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 77 transitions, 157 flow [2023-11-26 12:05:54,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:54,635 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f24ae2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:54,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-26 12:05:54,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:05:54,638 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-26 12:05:54,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:54,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:54,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:05:54,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:54,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 13828, now seen corresponding path program 1 times [2023-11-26 12:05:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619570482] [2023-11-26 12:05:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:55,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:55,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619570482] [2023-11-26 12:05:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619570482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:55,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444216523] [2023-11-26 12:05:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:55,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-26 12:05:55,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:55,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-26 12:05:55,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:55,435 INFO L124 PetriNetUnfolderBase]: 211/623 cut-off events. [2023-11-26 12:05:55,435 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:05:55,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 623 events. 211/623 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3823 event pairs, 143 based on Foata normal form. 52/526 useless extension candidates. Maximal degree in co-relation 987. Up to 374 conditions per place. [2023-11-26 12:05:55,445 INFO L140 encePairwiseOnDemand]: 69/78 looper letters, 29 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 12:05:55,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 201 flow [2023-11-26 12:05:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-26 12:05:55,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2023-11-26 12:05:55,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-26 12:05:55,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-26 12:05:55,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-26 12:05:55,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,476 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 157 flow. Second operand 3 states and 152 transitions. [2023-11-26 12:05:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 201 flow [2023-11-26 12:05:55,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:05:55,484 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 142 flow [2023-11-26 12:05:55,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-11-26 12:05:55,490 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-11-26 12:05:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 142 flow [2023-11-26 12:05:55,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:55,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:05:55,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:05:55,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:55,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash 13829, now seen corresponding path program 1 times [2023-11-26 12:05:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758229971] [2023-11-26 12:05:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:55,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:55,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:55,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758229971] [2023-11-26 12:05:55,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758229971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:55,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:55,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206077724] [2023-11-26 12:05:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:55,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:55,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-26 12:05:55,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:55,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-26 12:05:55,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:55,941 INFO L124 PetriNetUnfolderBase]: 211/622 cut-off events. [2023-11-26 12:05:55,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:55,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 622 events. 211/622 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3833 event pairs, 143 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 994. Up to 374 conditions per place. [2023-11-26 12:05:55,949 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 29 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 12:05:55,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 202 flow [2023-11-26 12:05:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 12:05:55,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2023-11-26 12:05:55,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 12:05:55,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 12:05:55,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:55,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 12:05:55,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,957 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 142 flow. Second operand 3 states and 146 transitions. [2023-11-26 12:05:55,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 202 flow [2023-11-26 12:05:55,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:55,961 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 140 flow [2023-11-26 12:05:55,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-26 12:05:55,962 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-26 12:05:55,962 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 140 flow [2023-11-26 12:05:55,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:55,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:55,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:05:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:05:55,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:55,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 429088, now seen corresponding path program 1 times [2023-11-26 12:05:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:55,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841473548] [2023-11-26 12:05:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841473548] [2023-11-26 12:05:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841473548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204931486] [2023-11-26 12:05:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:56,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:05:56,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:56,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:05:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:56,285 INFO L124 PetriNetUnfolderBase]: 212/601 cut-off events. [2023-11-26 12:05:56,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:05:56,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 601 events. 212/601 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3691 event pairs, 112 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 979. Up to 305 conditions per place. [2023-11-26 12:05:56,292 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-26 12:05:56,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 270 flow [2023-11-26 12:05:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-11-26 12:05:56,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.688034188034188 [2023-11-26 12:05:56,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-11-26 12:05:56,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-11-26 12:05:56,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:56,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-11-26 12:05:56,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,305 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 140 flow. Second operand 3 states and 161 transitions. [2023-11-26 12:05:56,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 270 flow [2023-11-26 12:05:56,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:56,309 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 138 flow [2023-11-26 12:05:56,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-11-26 12:05:56,312 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-11-26 12:05:56,313 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 138 flow [2023-11-26 12:05:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:56,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:05:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:05:56,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:56,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 429089, now seen corresponding path program 1 times [2023-11-26 12:05:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929055112] [2023-11-26 12:05:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929055112] [2023-11-26 12:05:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929055112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:56,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:56,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257379664] [2023-11-26 12:05:56,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-26 12:05:56,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:56,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-26 12:05:56,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:56,639 INFO L124 PetriNetUnfolderBase]: 212/600 cut-off events. [2023-11-26 12:05:56,639 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 12:05:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 600 events. 212/600 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3682 event pairs, 112 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 989. Up to 304 conditions per place. [2023-11-26 12:05:56,645 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 46 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-11-26 12:05:56,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 266 flow [2023-11-26 12:05:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:05:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2023-11-26 12:05:56,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2023-11-26 12:05:56,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2023-11-26 12:05:56,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2023-11-26 12:05:56,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:56,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2023-11-26 12:05:56,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,652 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 138 flow. Second operand 3 states and 163 transitions. [2023-11-26 12:05:56,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 266 flow [2023-11-26 12:05:56,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:56,657 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 136 flow [2023-11-26 12:05:56,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-26 12:05:56,660 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2023-11-26 12:05:56,660 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 136 flow [2023-11-26 12:05:56,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:56,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:56,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:05:56,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:56,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1148584433, now seen corresponding path program 1 times [2023-11-26 12:05:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:56,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183078316] [2023-11-26 12:05:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183078316] [2023-11-26 12:05:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183078316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120648309] [2023-11-26 12:05:56,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:56,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:05:56,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:56,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:05:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:05:56,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-26 12:05:56,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:56,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:56,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-26 12:05:56,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:57,022 INFO L124 PetriNetUnfolderBase]: 212/583 cut-off events. [2023-11-26 12:05:57,022 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 12:05:57,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 583 events. 212/583 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3511 event pairs, 112 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 972. Up to 304 conditions per place. [2023-11-26 12:05:57,033 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 46 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-26 12:05:57,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 264 flow [2023-11-26 12:05:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:05:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2023-11-26 12:05:57,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2023-11-26 12:05:57,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 201 transitions. [2023-11-26 12:05:57,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 201 transitions. [2023-11-26 12:05:57,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:57,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 201 transitions. [2023-11-26 12:05:57,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,047 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,047 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 136 flow. Second operand 4 states and 201 transitions. [2023-11-26 12:05:57,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 264 flow [2023-11-26 12:05:57,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:57,051 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 134 flow [2023-11-26 12:05:57,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-26 12:05:57,052 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2023-11-26 12:05:57,052 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 134 flow [2023-11-26 12:05:57,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:57,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:57,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:05:57,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:57,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash -16988191, now seen corresponding path program 1 times [2023-11-26 12:05:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883907743] [2023-11-26 12:05:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883907743] [2023-11-26 12:05:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883907743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:57,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057312257] [2023-11-26 12:05:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:57,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-26 12:05:57,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:57,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-26 12:05:57,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:57,478 INFO L124 PetriNetUnfolderBase]: 235/573 cut-off events. [2023-11-26 12:05:57,478 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 12:05:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 573 events. 235/573 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3312 event pairs, 22 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1013. Up to 283 conditions per place. [2023-11-26 12:05:57,484 INFO L140 encePairwiseOnDemand]: 70/78 looper letters, 61 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2023-11-26 12:05:57,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 328 flow [2023-11-26 12:05:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:05:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:05:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2023-11-26 12:05:57,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6256410256410256 [2023-11-26 12:05:57,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 244 transitions. [2023-11-26 12:05:57,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 244 transitions. [2023-11-26 12:05:57,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:57,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 244 transitions. [2023-11-26 12:05:57,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,490 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 134 flow. Second operand 5 states and 244 transitions. [2023-11-26 12:05:57,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 328 flow [2023-11-26 12:05:57,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:57,494 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 135 flow [2023-11-26 12:05:57,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-26 12:05:57,495 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-26 12:05:57,496 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 135 flow [2023-11-26 12:05:57,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:57,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:57,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:05:57,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash -16988190, now seen corresponding path program 1 times [2023-11-26 12:05:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050371228] [2023-11-26 12:05:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:57,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050371228] [2023-11-26 12:05:57,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050371228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:57,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:57,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:57,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889775809] [2023-11-26 12:05:57,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:57,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:57,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-26 12:05:57,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:57,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-26 12:05:57,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:58,026 INFO L124 PetriNetUnfolderBase]: 234/557 cut-off events. [2023-11-26 12:05:58,027 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:05:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 557 events. 234/557 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3074 event pairs, 53 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 1044. Up to 283 conditions per place. [2023-11-26 12:05:58,032 INFO L140 encePairwiseOnDemand]: 71/78 looper letters, 45 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-11-26 12:05:58,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 261 flow [2023-11-26 12:05:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:05:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:05:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-26 12:05:58,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5820512820512821 [2023-11-26 12:05:58,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-26 12:05:58,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-26 12:05:58,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:58,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-26 12:05:58,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,037 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 135 flow. Second operand 5 states and 227 transitions. [2023-11-26 12:05:58,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 261 flow [2023-11-26 12:05:58,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 251 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:05:58,040 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 127 flow [2023-11-26 12:05:58,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-26 12:05:58,041 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-11-26 12:05:58,042 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 127 flow [2023-11-26 12:05:58,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:58,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:58,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:05:58,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:58,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash 48343569, now seen corresponding path program 1 times [2023-11-26 12:05:58,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757718555] [2023-11-26 12:05:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757718555] [2023-11-26 12:05:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757718555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:58,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627055004] [2023-11-26 12:05:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:58,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:58,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:58,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 78 [2023-11-26 12:05:58,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:58,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 78 [2023-11-26 12:05:58,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:58,418 INFO L124 PetriNetUnfolderBase]: 255/620 cut-off events. [2023-11-26 12:05:58,418 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-26 12:05:58,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 620 events. 255/620 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3494 event pairs, 74 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 1153. Up to 308 conditions per place. [2023-11-26 12:05:58,424 INFO L140 encePairwiseOnDemand]: 61/78 looper letters, 73 selfloop transitions, 13 changer transitions 0/105 dead transitions. [2023-11-26 12:05:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 398 flow [2023-11-26 12:05:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:05:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:05:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2023-11-26 12:05:58,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2023-11-26 12:05:58,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 284 transitions. [2023-11-26 12:05:58,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 284 transitions. [2023-11-26 12:05:58,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:58,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 284 transitions. [2023-11-26 12:05:58,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,430 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 127 flow. Second operand 6 states and 284 transitions. [2023-11-26 12:05:58,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 398 flow [2023-11-26 12:05:58,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:05:58,434 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 230 flow [2023-11-26 12:05:58,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2023-11-26 12:05:58,435 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-11-26 12:05:58,435 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 230 flow [2023-11-26 12:05:58,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:58,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:05:58,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:58,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash 48343570, now seen corresponding path program 1 times [2023-11-26 12:05:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:58,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957491391] [2023-11-26 12:05:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:58,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:58,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957491391] [2023-11-26 12:05:58,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957491391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:58,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:58,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:58,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519871618] [2023-11-26 12:05:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:58,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:58,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:58,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 78 [2023-11-26 12:05:58,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:58,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 78 [2023-11-26 12:05:58,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:58,889 INFO L124 PetriNetUnfolderBase]: 251/568 cut-off events. [2023-11-26 12:05:58,889 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-26 12:05:58,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 568 events. 251/568 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2922 event pairs, 84 based on Foata normal form. 74/596 useless extension candidates. Maximal degree in co-relation 1244. Up to 428 conditions per place. [2023-11-26 12:05:58,909 INFO L140 encePairwiseOnDemand]: 68/78 looper letters, 46 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-11-26 12:05:58,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 344 flow [2023-11-26 12:05:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:05:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:05:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2023-11-26 12:05:58,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2023-11-26 12:05:58,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 205 transitions. [2023-11-26 12:05:58,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 205 transitions. [2023-11-26 12:05:58,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:58,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 205 transitions. [2023-11-26 12:05:58,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,914 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 230 flow. Second operand 5 states and 205 transitions. [2023-11-26 12:05:58,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 344 flow [2023-11-26 12:05:58,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:05:58,918 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 230 flow [2023-11-26 12:05:58,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-26 12:05:58,919 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2023-11-26 12:05:58,919 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 230 flow [2023-11-26 12:05:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:58,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:58,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:05:58,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:58,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1454507843, now seen corresponding path program 1 times [2023-11-26 12:05:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743862009] [2023-11-26 12:05:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:58,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:59,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743862009] [2023-11-26 12:05:59,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743862009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:59,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:59,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:05:59,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476143520] [2023-11-26 12:05:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:59,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:59,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:59,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2023-11-26 12:05:59,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:59,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2023-11-26 12:05:59,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:59,414 INFO L124 PetriNetUnfolderBase]: 258/585 cut-off events. [2023-11-26 12:05:59,415 INFO L125 PetriNetUnfolderBase]: For 271/276 co-relation queries the response was YES. [2023-11-26 12:05:59,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 585 events. 258/585 cut-off events. For 271/276 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3074 event pairs, 13 based on Foata normal form. 7/548 useless extension candidates. Maximal degree in co-relation 1331. Up to 304 conditions per place. [2023-11-26 12:05:59,420 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 74 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2023-11-26 12:05:59,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 500 flow [2023-11-26 12:05:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:05:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:05:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2023-11-26 12:05:59,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2023-11-26 12:05:59,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 298 transitions. [2023-11-26 12:05:59,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 298 transitions. [2023-11-26 12:05:59,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:59,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 298 transitions. [2023-11-26 12:05:59,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,426 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 230 flow. Second operand 7 states and 298 transitions. [2023-11-26 12:05:59,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 500 flow [2023-11-26 12:05:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 486 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:05:59,431 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 272 flow [2023-11-26 12:05:59,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-11-26 12:05:59,432 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-26 12:05:59,433 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 272 flow [2023-11-26 12:05:59,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:59,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:59,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:05:59,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:59,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1482286627, now seen corresponding path program 2 times [2023-11-26 12:05:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916384335] [2023-11-26 12:05:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:59,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:59,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:59,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916384335] [2023-11-26 12:05:59,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916384335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:59,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:05:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296017853] [2023-11-26 12:05:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:59,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:59,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2023-11-26 12:05:59,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:59,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2023-11-26 12:05:59,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:59,898 INFO L124 PetriNetUnfolderBase]: 252/555 cut-off events. [2023-11-26 12:05:59,898 INFO L125 PetriNetUnfolderBase]: For 467/474 co-relation queries the response was YES. [2023-11-26 12:05:59,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 555 events. 252/555 cut-off events. For 467/474 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2791 event pairs, 69 based on Foata normal form. 21/532 useless extension candidates. Maximal degree in co-relation 1312. Up to 308 conditions per place. [2023-11-26 12:05:59,903 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 63 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-26 12:05:59,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 446 flow [2023-11-26 12:05:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:05:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:05:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2023-11-26 12:05:59,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363247863247863 [2023-11-26 12:05:59,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 251 transitions. [2023-11-26 12:05:59,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 251 transitions. [2023-11-26 12:05:59,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:59,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 251 transitions. [2023-11-26 12:05:59,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,909 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 272 flow. Second operand 6 states and 251 transitions. [2023-11-26 12:05:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 446 flow [2023-11-26 12:05:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 403 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-11-26 12:05:59,914 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 209 flow [2023-11-26 12:05:59,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-11-26 12:05:59,915 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-11-26 12:05:59,916 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 209 flow [2023-11-26 12:05:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:59,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:59,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:05:59,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:05:59,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -302139274, now seen corresponding path program 1 times [2023-11-26 12:05:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:59,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925497355] [2023-11-26 12:05:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:00,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925497355] [2023-11-26 12:06:00,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925497355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699110783] [2023-11-26 12:06:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:00,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-26 12:06:00,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:00,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-26 12:06:00,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:00,379 INFO L124 PetriNetUnfolderBase]: 396/858 cut-off events. [2023-11-26 12:06:00,379 INFO L125 PetriNetUnfolderBase]: For 472/474 co-relation queries the response was YES. [2023-11-26 12:06:00,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 858 events. 396/858 cut-off events. For 472/474 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4449 event pairs, 99 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 1982. Up to 461 conditions per place. [2023-11-26 12:06:00,387 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 85 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2023-11-26 12:06:00,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 118 transitions, 609 flow [2023-11-26 12:06:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:06:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 308 transitions. [2023-11-26 12:06:00,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2023-11-26 12:06:00,390 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 308 transitions. [2023-11-26 12:06:00,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 308 transitions. [2023-11-26 12:06:00,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:00,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 308 transitions. [2023-11-26 12:06:00,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,394 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 209 flow. Second operand 6 states and 308 transitions. [2023-11-26 12:06:00,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 118 transitions, 609 flow [2023-11-26 12:06:00,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 594 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:06:00,399 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 365 flow [2023-11-26 12:06:00,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-11-26 12:06:00,400 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-26 12:06:00,400 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 365 flow [2023-11-26 12:06:00,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:00,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:00,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:06:00,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:00,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -301124362, now seen corresponding path program 1 times [2023-11-26 12:06:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580481436] [2023-11-26 12:06:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580481436] [2023-11-26 12:06:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580481436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609579958] [2023-11-26 12:06:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:00,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:06:00,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:00,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:06:00,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:01,093 INFO L124 PetriNetUnfolderBase]: 604/1306 cut-off events. [2023-11-26 12:06:01,093 INFO L125 PetriNetUnfolderBase]: For 1137/1142 co-relation queries the response was YES. [2023-11-26 12:06:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 1306 events. 604/1306 cut-off events. For 1137/1142 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7538 event pairs, 124 based on Foata normal form. 26/1231 useless extension candidates. Maximal degree in co-relation 3652. Up to 668 conditions per place. [2023-11-26 12:06:01,107 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 103 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2023-11-26 12:06:01,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 936 flow [2023-11-26 12:06:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:06:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 355 transitions. [2023-11-26 12:06:01,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6501831501831502 [2023-11-26 12:06:01,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 355 transitions. [2023-11-26 12:06:01,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 355 transitions. [2023-11-26 12:06:01,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:01,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 355 transitions. [2023-11-26 12:06:01,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.714285714285715) internal successors, (355), 7 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,114 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 365 flow. Second operand 7 states and 355 transitions. [2023-11-26 12:06:01,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 936 flow [2023-11-26 12:06:01,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 936 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:06:01,125 INFO L231 Difference]: Finished difference. Result has 75 places, 94 transitions, 648 flow [2023-11-26 12:06:01,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=75, PETRI_TRANSITIONS=94} [2023-11-26 12:06:01,126 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-11-26 12:06:01,126 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 94 transitions, 648 flow [2023-11-26 12:06:01,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:01,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:06:01,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:01,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -172470577, now seen corresponding path program 1 times [2023-11-26 12:06:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565639392] [2023-11-26 12:06:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:01,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:01,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565639392] [2023-11-26 12:06:01,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565639392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:01,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:01,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 12:06:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674607666] [2023-11-26 12:06:01,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:06:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:06:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:02,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-26 12:06:02,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 94 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:02,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-26 12:06:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:03,843 INFO L124 PetriNetUnfolderBase]: 828/1670 cut-off events. [2023-11-26 12:06:03,844 INFO L125 PetriNetUnfolderBase]: For 2663/2665 co-relation queries the response was YES. [2023-11-26 12:06:03,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1670 events. 828/1670 cut-off events. For 2663/2665 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9272 event pairs, 157 based on Foata normal form. 1/1549 useless extension candidates. Maximal degree in co-relation 5398. Up to 814 conditions per place. [2023-11-26 12:06:03,861 INFO L140 encePairwiseOnDemand]: 58/78 looper letters, 156 selfloop transitions, 88 changer transitions 0/254 dead transitions. [2023-11-26 12:06:03,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 254 transitions, 1967 flow [2023-11-26 12:06:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 12:06:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 12:06:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 911 transitions. [2023-11-26 12:06:03,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561660561660562 [2023-11-26 12:06:03,867 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 911 transitions. [2023-11-26 12:06:03,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 911 transitions. [2023-11-26 12:06:03,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:03,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 911 transitions. [2023-11-26 12:06:03,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 43.38095238095238) internal successors, (911), 21 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:03,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:03,877 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:03,877 INFO L175 Difference]: Start difference. First operand has 75 places, 94 transitions, 648 flow. Second operand 21 states and 911 transitions. [2023-11-26 12:06:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 254 transitions, 1967 flow [2023-11-26 12:06:03,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 254 transitions, 1961 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:03,903 INFO L231 Difference]: Finished difference. Result has 103 places, 157 transitions, 1328 flow [2023-11-26 12:06:03,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1328, PETRI_PLACES=103, PETRI_TRANSITIONS=157} [2023-11-26 12:06:03,904 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 32 predicate places. [2023-11-26 12:06:03,904 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 157 transitions, 1328 flow [2023-11-26 12:06:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:03,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:03,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:06:03,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:03,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash 453687815, now seen corresponding path program 2 times [2023-11-26 12:06:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908382545] [2023-11-26 12:06:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:03,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908382545] [2023-11-26 12:06:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908382545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096955530] [2023-11-26 12:06:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:04,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:05,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-26 12:06:05,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 157 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:05,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:05,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-26 12:06:05,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:06,425 INFO L124 PetriNetUnfolderBase]: 1045/2225 cut-off events. [2023-11-26 12:06:06,425 INFO L125 PetriNetUnfolderBase]: For 6455/6459 co-relation queries the response was YES. [2023-11-26 12:06:06,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 2225 events. 1045/2225 cut-off events. For 6455/6459 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 13330 event pairs, 177 based on Foata normal form. 147/2184 useless extension candidates. Maximal degree in co-relation 8718. Up to 836 conditions per place. [2023-11-26 12:06:06,452 INFO L140 encePairwiseOnDemand]: 59/78 looper letters, 197 selfloop transitions, 114 changer transitions 0/321 dead transitions. [2023-11-26 12:06:06,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 321 transitions, 2995 flow [2023-11-26 12:06:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 12:06:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-26 12:06:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 883 transitions. [2023-11-26 12:06:06,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958164642375169 [2023-11-26 12:06:06,457 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 883 transitions. [2023-11-26 12:06:06,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 883 transitions. [2023-11-26 12:06:06,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:06,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 883 transitions. [2023-11-26 12:06:06,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:06,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:06,468 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:06,469 INFO L175 Difference]: Start difference. First operand has 103 places, 157 transitions, 1328 flow. Second operand 19 states and 883 transitions. [2023-11-26 12:06:06,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 321 transitions, 2995 flow [2023-11-26 12:06:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 321 transitions, 2854 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-26 12:06:06,526 INFO L231 Difference]: Finished difference. Result has 125 places, 196 transitions, 1973 flow [2023-11-26 12:06:06,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1973, PETRI_PLACES=125, PETRI_TRANSITIONS=196} [2023-11-26 12:06:06,529 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 54 predicate places. [2023-11-26 12:06:06,529 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 196 transitions, 1973 flow [2023-11-26 12:06:06,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:06,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:06,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:06,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:06:06,530 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:06,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -765678935, now seen corresponding path program 3 times [2023-11-26 12:06:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139755822] [2023-11-26 12:06:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:06,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139755822] [2023-11-26 12:06:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139755822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137760175] [2023-11-26 12:06:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:06:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 196 transitions, 1973 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:07,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:07,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:06:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:08,904 INFO L124 PetriNetUnfolderBase]: 1495/3241 cut-off events. [2023-11-26 12:06:08,904 INFO L125 PetriNetUnfolderBase]: For 14572/14620 co-relation queries the response was YES. [2023-11-26 12:06:08,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14388 conditions, 3241 events. 1495/3241 cut-off events. For 14572/14620 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22588 event pairs, 274 based on Foata normal form. 26/2997 useless extension candidates. Maximal degree in co-relation 14339. Up to 1108 conditions per place. [2023-11-26 12:06:08,955 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 292 selfloop transitions, 118 changer transitions 0/437 dead transitions. [2023-11-26 12:06:08,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 437 transitions, 4909 flow [2023-11-26 12:06:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 12:06:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 726 transitions. [2023-11-26 12:06:08,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2023-11-26 12:06:08,961 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 726 transitions. [2023-11-26 12:06:08,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 726 transitions. [2023-11-26 12:06:08,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:08,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 726 transitions. [2023-11-26 12:06:08,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 51.857142857142854) internal successors, (726), 14 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:08,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:08,969 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:08,970 INFO L175 Difference]: Start difference. First operand has 125 places, 196 transitions, 1973 flow. Second operand 14 states and 726 transitions. [2023-11-26 12:06:08,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 437 transitions, 4909 flow [2023-11-26 12:06:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 437 transitions, 4825 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:09,103 INFO L231 Difference]: Finished difference. Result has 141 places, 269 transitions, 3174 flow [2023-11-26 12:06:09,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3174, PETRI_PLACES=141, PETRI_TRANSITIONS=269} [2023-11-26 12:06:09,104 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 70 predicate places. [2023-11-26 12:06:09,104 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 269 transitions, 3174 flow [2023-11-26 12:06:09,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:09,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:09,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:09,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:06:09,106 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:09,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash 385786263, now seen corresponding path program 4 times [2023-11-26 12:06:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116168597] [2023-11-26 12:06:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116168597] [2023-11-26 12:06:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116168597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:09,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:09,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:06:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891670330] [2023-11-26 12:06:09,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:09,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:06:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:06:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:09,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-26 12:06:09,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 269 transitions, 3174 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:09,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:09,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-26 12:06:09,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:10,903 INFO L124 PetriNetUnfolderBase]: 1874/4046 cut-off events. [2023-11-26 12:06:10,903 INFO L125 PetriNetUnfolderBase]: For 26939/27004 co-relation queries the response was YES. [2023-11-26 12:06:10,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20270 conditions, 4046 events. 1874/4046 cut-off events. For 26939/27004 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 29235 event pairs, 196 based on Foata normal form. 59/3791 useless extension candidates. Maximal degree in co-relation 20211. Up to 1280 conditions per place. [2023-11-26 12:06:10,960 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 370 selfloop transitions, 88 changer transitions 0/483 dead transitions. [2023-11-26 12:06:10,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 483 transitions, 6237 flow [2023-11-26 12:06:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:06:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:06:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 421 transitions. [2023-11-26 12:06:10,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746794871794872 [2023-11-26 12:06:10,962 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 421 transitions. [2023-11-26 12:06:10,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 421 transitions. [2023-11-26 12:06:10,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:10,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 421 transitions. [2023-11-26 12:06:10,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.625) internal successors, (421), 8 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:10,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:10,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:10,967 INFO L175 Difference]: Start difference. First operand has 141 places, 269 transitions, 3174 flow. Second operand 8 states and 421 transitions. [2023-11-26 12:06:10,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 483 transitions, 6237 flow [2023-11-26 12:06:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 483 transitions, 6139 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:11,170 INFO L231 Difference]: Finished difference. Result has 151 places, 314 transitions, 3851 flow [2023-11-26 12:06:11,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3851, PETRI_PLACES=151, PETRI_TRANSITIONS=314} [2023-11-26 12:06:11,171 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 80 predicate places. [2023-11-26 12:06:11,171 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 314 transitions, 3851 flow [2023-11-26 12:06:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:11,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:11,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:11,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:06:11,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:11,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1063112209, now seen corresponding path program 1 times [2023-11-26 12:06:11,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:11,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524911988] [2023-11-26 12:06:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524911988] [2023-11-26 12:06:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524911988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:06:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455523554] [2023-11-26 12:06:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:11,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:11,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:11,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-26 12:06:11,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 314 transitions, 3851 flow. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:11,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:11,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-26 12:06:11,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:12,047 INFO L124 PetriNetUnfolderBase]: 977/2167 cut-off events. [2023-11-26 12:06:12,047 INFO L125 PetriNetUnfolderBase]: For 15872/15918 co-relation queries the response was YES. [2023-11-26 12:06:12,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11651 conditions, 2167 events. 977/2167 cut-off events. For 15872/15918 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13775 event pairs, 307 based on Foata normal form. 33/2032 useless extension candidates. Maximal degree in co-relation 11587. Up to 1503 conditions per place. [2023-11-26 12:06:12,075 INFO L140 encePairwiseOnDemand]: 71/78 looper letters, 181 selfloop transitions, 22 changer transitions 17/242 dead transitions. [2023-11-26 12:06:12,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 242 transitions, 2908 flow [2023-11-26 12:06:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:06:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2023-11-26 12:06:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391941391941391 [2023-11-26 12:06:12,078 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 349 transitions. [2023-11-26 12:06:12,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 349 transitions. [2023-11-26 12:06:12,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:12,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 349 transitions. [2023-11-26 12:06:12,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.857142857142854) internal successors, (349), 7 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:12,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:12,081 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:12,081 INFO L175 Difference]: Start difference. First operand has 151 places, 314 transitions, 3851 flow. Second operand 7 states and 349 transitions. [2023-11-26 12:06:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 242 transitions, 2908 flow [2023-11-26 12:06:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 242 transitions, 2683 flow, removed 63 selfloop flow, removed 11 redundant places. [2023-11-26 12:06:12,153 INFO L231 Difference]: Finished difference. Result has 144 places, 192 transitions, 1920 flow [2023-11-26 12:06:12,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1920, PETRI_PLACES=144, PETRI_TRANSITIONS=192} [2023-11-26 12:06:12,154 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 73 predicate places. [2023-11-26 12:06:12,154 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 192 transitions, 1920 flow [2023-11-26 12:06:12,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:12,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:12,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:12,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 12:06:12,155 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:12,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1871380519, now seen corresponding path program 5 times [2023-11-26 12:06:12,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:12,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336512923] [2023-11-26 12:06:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336512923] [2023-11-26 12:06:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336512923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:12,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:06:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281871651] [2023-11-26 12:06:12,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:06:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:06:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:12,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-26 12:06:12,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 192 transitions, 1920 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:12,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:12,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-26 12:06:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:13,461 INFO L124 PetriNetUnfolderBase]: 1161/2494 cut-off events. [2023-11-26 12:06:13,461 INFO L125 PetriNetUnfolderBase]: For 16710/16762 co-relation queries the response was YES. [2023-11-26 12:06:13,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12759 conditions, 2494 events. 1161/2494 cut-off events. For 16710/16762 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15893 event pairs, 263 based on Foata normal form. 44/2362 useless extension candidates. Maximal degree in co-relation 12699. Up to 910 conditions per place. [2023-11-26 12:06:13,491 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 258 selfloop transitions, 71 changer transitions 20/363 dead transitions. [2023-11-26 12:06:13,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 363 transitions, 4221 flow [2023-11-26 12:06:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:06:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:06:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 464 transitions. [2023-11-26 12:06:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6609686609686609 [2023-11-26 12:06:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 464 transitions. [2023-11-26 12:06:13,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 464 transitions. [2023-11-26 12:06:13,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:13,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 464 transitions. [2023-11-26 12:06:13,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:13,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:13,499 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:13,500 INFO L175 Difference]: Start difference. First operand has 144 places, 192 transitions, 1920 flow. Second operand 9 states and 464 transitions. [2023-11-26 12:06:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 363 transitions, 4221 flow [2023-11-26 12:06:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 363 transitions, 4113 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-11-26 12:06:13,575 INFO L231 Difference]: Finished difference. Result has 155 places, 212 transitions, 2380 flow [2023-11-26 12:06:13,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2380, PETRI_PLACES=155, PETRI_TRANSITIONS=212} [2023-11-26 12:06:13,576 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 84 predicate places. [2023-11-26 12:06:13,576 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 212 transitions, 2380 flow [2023-11-26 12:06:13,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:13,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:13,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:13,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 12:06:13,577 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:13,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1155971479, now seen corresponding path program 6 times [2023-11-26 12:06:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:13,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245771722] [2023-11-26 12:06:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:13,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:13,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245771722] [2023-11-26 12:06:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245771722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:13,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026924274] [2023-11-26 12:06:13,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:13,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:14,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:06:14,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 212 transitions, 2380 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:14,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:14,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:06:14,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:15,770 INFO L124 PetriNetUnfolderBase]: 1997/4285 cut-off events. [2023-11-26 12:06:15,770 INFO L125 PetriNetUnfolderBase]: For 33494/33574 co-relation queries the response was YES. [2023-11-26 12:06:15,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23221 conditions, 4285 events. 1997/4285 cut-off events. For 33494/33574 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 28476 event pairs, 503 based on Foata normal form. 44/4006 useless extension candidates. Maximal degree in co-relation 23156. Up to 1257 conditions per place. [2023-11-26 12:06:15,926 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 338 selfloop transitions, 149 changer transitions 10/513 dead transitions. [2023-11-26 12:06:15,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 513 transitions, 6622 flow [2023-11-26 12:06:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 12:06:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-26 12:06:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 839 transitions. [2023-11-26 12:06:15,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327300150829562 [2023-11-26 12:06:15,930 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 839 transitions. [2023-11-26 12:06:15,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 839 transitions. [2023-11-26 12:06:15,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:15,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 839 transitions. [2023-11-26 12:06:15,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 49.35294117647059) internal successors, (839), 17 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:15,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 78.0) internal successors, (1404), 18 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:15,937 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 78.0) internal successors, (1404), 18 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:15,937 INFO L175 Difference]: Start difference. First operand has 155 places, 212 transitions, 2380 flow. Second operand 17 states and 839 transitions. [2023-11-26 12:06:15,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 513 transitions, 6622 flow [2023-11-26 12:06:16,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 513 transitions, 6362 flow, removed 97 selfloop flow, removed 7 redundant places. [2023-11-26 12:06:16,128 INFO L231 Difference]: Finished difference. Result has 173 places, 296 transitions, 3954 flow [2023-11-26 12:06:16,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3954, PETRI_PLACES=173, PETRI_TRANSITIONS=296} [2023-11-26 12:06:16,129 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 102 predicate places. [2023-11-26 12:06:16,129 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 296 transitions, 3954 flow [2023-11-26 12:06:16,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:16,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:16,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:16,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 12:06:16,130 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:16,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -907058405, now seen corresponding path program 7 times [2023-11-26 12:06:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995893627] [2023-11-26 12:06:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:16,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995893627] [2023-11-26 12:06:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995893627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809281761] [2023-11-26 12:06:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:16,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:16,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:06:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 296 transitions, 3954 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:06:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:18,676 INFO L124 PetriNetUnfolderBase]: 2246/4746 cut-off events. [2023-11-26 12:06:18,676 INFO L125 PetriNetUnfolderBase]: For 46756/46860 co-relation queries the response was YES. [2023-11-26 12:06:18,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27910 conditions, 4746 events. 2246/4746 cut-off events. For 46756/46860 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 32528 event pairs, 476 based on Foata normal form. 46/4434 useless extension candidates. Maximal degree in co-relation 27836. Up to 3535 conditions per place. [2023-11-26 12:06:18,734 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 341 selfloop transitions, 76 changer transitions 3/436 dead transitions. [2023-11-26 12:06:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 436 transitions, 6479 flow [2023-11-26 12:06:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 12:06:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 665 transitions. [2023-11-26 12:06:18,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2023-11-26 12:06:18,738 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 665 transitions. [2023-11-26 12:06:18,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 665 transitions. [2023-11-26 12:06:18,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:18,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 665 transitions. [2023-11-26 12:06:18,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 47.5) internal successors, (665), 14 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,745 INFO L175 Difference]: Start difference. First operand has 173 places, 296 transitions, 3954 flow. Second operand 14 states and 665 transitions. [2023-11-26 12:06:18,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 436 transitions, 6479 flow [2023-11-26 12:06:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 436 transitions, 6062 flow, removed 184 selfloop flow, removed 9 redundant places. [2023-11-26 12:06:18,996 INFO L231 Difference]: Finished difference. Result has 181 places, 334 transitions, 4515 flow [2023-11-26 12:06:18,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4515, PETRI_PLACES=181, PETRI_TRANSITIONS=334} [2023-11-26 12:06:18,997 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 110 predicate places. [2023-11-26 12:06:18,997 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 334 transitions, 4515 flow [2023-11-26 12:06:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:18,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:18,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 12:06:18,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:18,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash 653859303, now seen corresponding path program 8 times [2023-11-26 12:06:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721766635] [2023-11-26 12:06:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:19,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:19,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721766635] [2023-11-26 12:06:19,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721766635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:06:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874118166] [2023-11-26 12:06:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:06:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:06:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:19,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-26 12:06:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 334 transitions, 4515 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:19,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:19,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-26 12:06:19,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:21,589 INFO L124 PetriNetUnfolderBase]: 2859/6258 cut-off events. [2023-11-26 12:06:21,589 INFO L125 PetriNetUnfolderBase]: For 62881/63004 co-relation queries the response was YES. [2023-11-26 12:06:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35735 conditions, 6258 events. 2859/6258 cut-off events. For 62881/63004 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 45788 event pairs, 792 based on Foata normal form. 396/6135 useless extension candidates. Maximal degree in co-relation 35659. Up to 1939 conditions per place. [2023-11-26 12:06:21,665 INFO L140 encePairwiseOnDemand]: 61/78 looper letters, 381 selfloop transitions, 136 changer transitions 79/610 dead transitions. [2023-11-26 12:06:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 610 transitions, 9050 flow [2023-11-26 12:06:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:06:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:06:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 489 transitions. [2023-11-26 12:06:21,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2023-11-26 12:06:21,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 489 transitions. [2023-11-26 12:06:21,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 489 transitions. [2023-11-26 12:06:21,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:21,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 489 transitions. [2023-11-26 12:06:21,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 54.333333333333336) internal successors, (489), 9 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:21,674 INFO L175 Difference]: Start difference. First operand has 181 places, 334 transitions, 4515 flow. Second operand 9 states and 489 transitions. [2023-11-26 12:06:21,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 610 transitions, 9050 flow [2023-11-26 12:06:22,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 610 transitions, 8791 flow, removed 99 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:22,032 INFO L231 Difference]: Finished difference. Result has 187 places, 368 transitions, 5369 flow [2023-11-26 12:06:22,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=4323, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5369, PETRI_PLACES=187, PETRI_TRANSITIONS=368} [2023-11-26 12:06:22,034 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 116 predicate places. [2023-11-26 12:06:22,034 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 368 transitions, 5369 flow [2023-11-26 12:06:22,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:22,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:22,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:22,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 12:06:22,035 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:22,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2001319517, now seen corresponding path program 9 times [2023-11-26 12:06:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:22,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539982091] [2023-11-26 12:06:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:22,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539982091] [2023-11-26 12:06:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539982091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:22,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184638304] [2023-11-26 12:06:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:22,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:23,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-26 12:06:23,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 368 transitions, 5369 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:23,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:23,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-26 12:06:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:25,230 INFO L124 PetriNetUnfolderBase]: 2941/6209 cut-off events. [2023-11-26 12:06:25,230 INFO L125 PetriNetUnfolderBase]: For 69444/69488 co-relation queries the response was YES. [2023-11-26 12:06:25,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38733 conditions, 6209 events. 2941/6209 cut-off events. For 69444/69488 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 43306 event pairs, 1077 based on Foata normal form. 21/5733 useless extension candidates. Maximal degree in co-relation 38653. Up to 5063 conditions per place. [2023-11-26 12:06:25,391 INFO L140 encePairwiseOnDemand]: 65/78 looper letters, 359 selfloop transitions, 31 changer transitions 30/430 dead transitions. [2023-11-26 12:06:25,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 430 transitions, 6838 flow [2023-11-26 12:06:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:06:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:06:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 512 transitions. [2023-11-26 12:06:25,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-11-26 12:06:25,397 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 512 transitions. [2023-11-26 12:06:25,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 512 transitions. [2023-11-26 12:06:25,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:25,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 512 transitions. [2023-11-26 12:06:25,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.666666666666664) internal successors, (512), 12 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:25,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:25,406 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:25,406 INFO L175 Difference]: Start difference. First operand has 187 places, 368 transitions, 5369 flow. Second operand 12 states and 512 transitions. [2023-11-26 12:06:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 430 transitions, 6838 flow [2023-11-26 12:06:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 430 transitions, 6663 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:25,772 INFO L231 Difference]: Finished difference. Result has 202 places, 367 transitions, 5311 flow [2023-11-26 12:06:25,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5311, PETRI_PLACES=202, PETRI_TRANSITIONS=367} [2023-11-26 12:06:25,773 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 131 predicate places. [2023-11-26 12:06:25,773 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 367 transitions, 5311 flow [2023-11-26 12:06:25,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:25,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:25,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:25,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 12:06:25,775 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:25,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash -439551941, now seen corresponding path program 10 times [2023-11-26 12:06:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:25,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309528168] [2023-11-26 12:06:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309528168] [2023-11-26 12:06:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309528168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:26,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 12:06:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934176816] [2023-11-26 12:06:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:06:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:06:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:27,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-26 12:06:27,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 367 transitions, 5311 flow. Second operand has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:27,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:27,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-26 12:06:27,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:29,615 INFO L124 PetriNetUnfolderBase]: 2923/6162 cut-off events. [2023-11-26 12:06:29,615 INFO L125 PetriNetUnfolderBase]: For 68287/68332 co-relation queries the response was YES. [2023-11-26 12:06:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38739 conditions, 6162 events. 2923/6162 cut-off events. For 68287/68332 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 43013 event pairs, 1079 based on Foata normal form. 18/5683 useless extension candidates. Maximal degree in co-relation 38659. Up to 5064 conditions per place. [2023-11-26 12:06:29,667 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 358 selfloop transitions, 37 changer transitions 9/414 dead transitions. [2023-11-26 12:06:29,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 414 transitions, 6621 flow [2023-11-26 12:06:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 12:06:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 12:06:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 541 transitions. [2023-11-26 12:06:29,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335305719921104 [2023-11-26 12:06:29,669 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 541 transitions. [2023-11-26 12:06:29,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 541 transitions. [2023-11-26 12:06:29,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:29,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 541 transitions. [2023-11-26 12:06:29,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.61538461538461) internal successors, (541), 13 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,675 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,675 INFO L175 Difference]: Start difference. First operand has 202 places, 367 transitions, 5311 flow. Second operand 13 states and 541 transitions. [2023-11-26 12:06:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 414 transitions, 6621 flow [2023-11-26 12:06:29,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 414 transitions, 6553 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-26 12:06:29,949 INFO L231 Difference]: Finished difference. Result has 202 places, 369 transitions, 5366 flow [2023-11-26 12:06:29,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5366, PETRI_PLACES=202, PETRI_TRANSITIONS=369} [2023-11-26 12:06:29,950 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 131 predicate places. [2023-11-26 12:06:29,950 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 369 transitions, 5366 flow [2023-11-26 12:06:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:29,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:29,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 12:06:29,951 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:29,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 591946793, now seen corresponding path program 11 times [2023-11-26 12:06:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:29,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323220947] [2023-11-26 12:06:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323220947] [2023-11-26 12:06:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323220947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156027182] [2023-11-26 12:06:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:30,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:31,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-26 12:06:31,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 369 transitions, 5366 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:31,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:31,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-26 12:06:31,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:33,311 INFO L124 PetriNetUnfolderBase]: 2869/6066 cut-off events. [2023-11-26 12:06:33,312 INFO L125 PetriNetUnfolderBase]: For 66978/67023 co-relation queries the response was YES. [2023-11-26 12:06:33,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38069 conditions, 6066 events. 2869/6066 cut-off events. For 66978/67023 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 42249 event pairs, 1102 based on Foata normal form. 21/5592 useless extension candidates. Maximal degree in co-relation 37983. Up to 5028 conditions per place. [2023-11-26 12:06:33,389 INFO L140 encePairwiseOnDemand]: 65/78 looper letters, 344 selfloop transitions, 20 changer transitions 23/397 dead transitions. [2023-11-26 12:06:33,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 397 transitions, 6384 flow [2023-11-26 12:06:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:06:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:06:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 463 transitions. [2023-11-26 12:06:33,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396270396270396 [2023-11-26 12:06:33,392 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 463 transitions. [2023-11-26 12:06:33,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 463 transitions. [2023-11-26 12:06:33,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:33,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 463 transitions. [2023-11-26 12:06:33,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 42.09090909090909) internal successors, (463), 11 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,397 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,397 INFO L175 Difference]: Start difference. First operand has 202 places, 369 transitions, 5366 flow. Second operand 11 states and 463 transitions. [2023-11-26 12:06:33,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 397 transitions, 6384 flow [2023-11-26 12:06:33,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 397 transitions, 6291 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-11-26 12:06:33,678 INFO L231 Difference]: Finished difference. Result has 197 places, 346 transitions, 5000 flow [2023-11-26 12:06:33,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5000, PETRI_PLACES=197, PETRI_TRANSITIONS=346} [2023-11-26 12:06:33,679 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 126 predicate places. [2023-11-26 12:06:33,679 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 346 transitions, 5000 flow [2023-11-26 12:06:33,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:33,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:33,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 12:06:33,680 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:33,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1174139769, now seen corresponding path program 12 times [2023-11-26 12:06:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720222945] [2023-11-26 12:06:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:34,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720222945] [2023-11-26 12:06:34,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720222945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:34,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:06:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160562598] [2023-11-26 12:06:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:34,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:06:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:06:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-26 12:06:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 346 transitions, 5000 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-26 12:06:34,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:36,838 INFO L124 PetriNetUnfolderBase]: 2682/5837 cut-off events. [2023-11-26 12:06:36,838 INFO L125 PetriNetUnfolderBase]: For 65666/65772 co-relation queries the response was YES. [2023-11-26 12:06:36,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35958 conditions, 5837 events. 2682/5837 cut-off events. For 65666/65772 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 42808 event pairs, 1003 based on Foata normal form. 30/5340 useless extension candidates. Maximal degree in co-relation 35873. Up to 4855 conditions per place. [2023-11-26 12:06:36,888 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 368 selfloop transitions, 38 changer transitions 4/425 dead transitions. [2023-11-26 12:06:36,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 425 transitions, 6761 flow [2023-11-26 12:06:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 12:06:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 12:06:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 600 transitions. [2023-11-26 12:06:36,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591715976331361 [2023-11-26 12:06:36,890 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 600 transitions. [2023-11-26 12:06:36,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 600 transitions. [2023-11-26 12:06:36,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:36,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 600 transitions. [2023-11-26 12:06:36,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 46.15384615384615) internal successors, (600), 13 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,896 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,896 INFO L175 Difference]: Start difference. First operand has 197 places, 346 transitions, 5000 flow. Second operand 13 states and 600 transitions. [2023-11-26 12:06:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 425 transitions, 6761 flow [2023-11-26 12:06:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 425 transitions, 6605 flow, removed 28 selfloop flow, removed 20 redundant places. [2023-11-26 12:06:37,176 INFO L231 Difference]: Finished difference. Result has 187 places, 367 transitions, 5410 flow [2023-11-26 12:06:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5410, PETRI_PLACES=187, PETRI_TRANSITIONS=367} [2023-11-26 12:06:37,176 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 116 predicate places. [2023-11-26 12:06:37,177 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 367 transitions, 5410 flow [2023-11-26 12:06:37,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:37,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:37,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 12:06:37,177 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-26 12:06:37,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1644638438, now seen corresponding path program 1 times [2023-11-26 12:06:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929510900] [2023-11-26 12:06:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat