./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.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_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI --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 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:01:35,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:01:36,000 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:01:36,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:01:36,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:01:36,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:01:36,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:01:36,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:01:36,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:01:36,076 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:01:36,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:01:36,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:01:36,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:01:36,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:01:36,085 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:01:36,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:01:36,088 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:01:36,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:01:36,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:01:36,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:01:36,090 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:01:36,090 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:01:36,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:01:36,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:01:36,092 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:01:36,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:01:36,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:01:36,093 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:01:36,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:01:36,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:01:36,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:01:36,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:01:36,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:36,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:01:36,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:01:36,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:01:36,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:01:36,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:01:36,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:01:36,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:01:36,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:01:36,101 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_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 [2023-11-24 22:01:36,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:01:36,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:01:36,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:01:36,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:01:36,478 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:01:36,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i [2023-11-24 22:01:39,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:01:39,974 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:01:39,975 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/sv-benchmarks/c/pthread-wmm/mix007.oepc.i [2023-11-24 22:01:39,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/data/3fbb2d838/7d39e7cb28404ef384252125a5e7129b/FLAGc38e1033d [2023-11-24 22:01:40,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/data/3fbb2d838/7d39e7cb28404ef384252125a5e7129b [2023-11-24 22:01:40,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:01:40,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:01:40,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:40,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:01:40,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:01:40,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109fb62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40, skipping insertion in model container [2023-11-24 22:01:40,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:40,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:40,482 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:01:40,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:40,629 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:40,630 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:40,638 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:01:40,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40 WrapperNode [2023-11-24 22:01:40,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:40,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:40,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:01:40,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:01:40,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,749 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-24 22:01:40,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:40,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:01:40,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:01:40,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:01:40,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,852 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 22:01:40,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:01:40,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:01:40,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:01:40,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:01:40,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (1/1) ... [2023-11-24 22:01:40,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:40,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:01:40,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1302ed18-77a7-424e-871f-60165ea6a6a3/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:01:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:01:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:01:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:01:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:01:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:01:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:01:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:01:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:01:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:01:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 22:01:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 22:01:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 22:01:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 22:01:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 22:01:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 22:01:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 22:01:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 22:01:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:01:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:01:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:01:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:01:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:01:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:01:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:01:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:01:41,008 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:01:41,241 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:01:41,243 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:01:41,685 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:01:41,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:01:41,974 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:01:41,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:41 BoogieIcfgContainer [2023-11-24 22:01:41,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:01:41,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:01:41,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:01:41,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:01:41,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:01:40" (1/3) ... [2023-11-24 22:01:41,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027d096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:41, skipping insertion in model container [2023-11-24 22:01:41,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:40" (2/3) ... [2023-11-24 22:01:41,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027d096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:41, skipping insertion in model container [2023-11-24 22:01:41,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:41" (3/3) ... [2023-11-24 22:01:41,986 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2023-11-24 22:01:42,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:01:42,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-24 22:01:42,006 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:01:42,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 22:01:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 150 flow [2023-11-24 22:01:42,197 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-24 22:01:42,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:01:42,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-11-24 22:01:42,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 67 transitions, 150 flow [2023-11-24 22:01:42,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 63 transitions, 138 flow [2023-11-24 22:01:42,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:01:42,224 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;@76b38851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:01:42,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 22:01:42,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:01:42,228 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:01:42,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:01:42,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:42,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:01:42,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:42,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash 14397, now seen corresponding path program 1 times [2023-11-24 22:01:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574874018] [2023-11-24 22:01:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574874018] [2023-11-24 22:01:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574874018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:42,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:42,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085684283] [2023-11-24 22:01:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:42,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:42,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 22:01:42,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:42,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:42,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 22:01:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:44,306 INFO L124 PetriNetUnfolderBase]: 4217/7253 cut-off events. [2023-11-24 22:01:44,307 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-24 22:01:44,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13180 conditions, 7253 events. 4217/7253 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 54704 event pairs, 3179 based on Foata normal form. 360/6961 useless extension candidates. Maximal degree in co-relation 13165. Up to 4391 conditions per place. [2023-11-24 22:01:44,397 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-24 22:01:44,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 228 flow [2023-11-24 22:01:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 22:01:44,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 22:01:44,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 22:01:44,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 22:01:44,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:44,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 22:01:44,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:44,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:44,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:44,424 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 138 flow. Second operand 3 states and 149 transitions. [2023-11-24 22:01:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 228 flow [2023-11-24 22:01:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 22:01:44,439 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-24 22:01:44,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-24 22:01:44,445 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-24 22:01:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-24 22:01:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:44,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:44,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:01:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:01:44,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:44,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 14398, now seen corresponding path program 1 times [2023-11-24 22:01:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917425310] [2023-11-24 22:01:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917425310] [2023-11-24 22:01:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917425310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:44,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:44,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893796846] [2023-11-24 22:01:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:44,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:44,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 22:01:44,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:44,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:44,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 22:01:44,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:46,151 INFO L124 PetriNetUnfolderBase]: 4217/7252 cut-off events. [2023-11-24 22:01:46,152 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-24 22:01:46,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13356 conditions, 7252 events. 4217/7252 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 54830 event pairs, 3179 based on Foata normal form. 1/6601 useless extension candidates. Maximal degree in co-relation 13345. Up to 4390 conditions per place. [2023-11-24 22:01:46,230 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-24 22:01:46,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 224 flow [2023-11-24 22:01:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 22:01:46,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 22:01:46,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 22:01:46,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 22:01:46,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:46,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 22:01:46,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:46,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:46,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:46,250 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 149 transitions. [2023-11-24 22:01:46,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 224 flow [2023-11-24 22:01:46,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:46,269 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-24 22:01:46,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-24 22:01:46,277 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2023-11-24 22:01:46,277 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-24 22:01:46,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:46,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:46,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:01:46,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:46,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 429340393, now seen corresponding path program 1 times [2023-11-24 22:01:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526867039] [2023-11-24 22:01:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526867039] [2023-11-24 22:01:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526867039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458259703] [2023-11-24 22:01:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:46,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:46,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 22:01:46,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:46,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:46,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 22:01:46,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:47,734 INFO L124 PetriNetUnfolderBase]: 4221/7215 cut-off events. [2023-11-24 22:01:47,735 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-24 22:01:47,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 7215 events. 4221/7215 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 54412 event pairs, 3251 based on Foata normal form. 0/6573 useless extension candidates. Maximal degree in co-relation 13317. Up to 4393 conditions per place. [2023-11-24 22:01:47,796 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-24 22:01:47,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 224 flow [2023-11-24 22:01:47,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-24 22:01:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2023-11-24 22:01:47,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-24 22:01:47,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-24 22:01:47,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:47,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-24 22:01:47,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:47,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:47,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:47,808 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 147 transitions. [2023-11-24 22:01:47,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 224 flow [2023-11-24 22:01:47,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:47,819 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-24 22:01:47,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-24 22:01:47,821 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-24 22:01:47,822 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-24 22:01:47,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:47,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:47,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:47,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:01:47,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:47,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 429340394, now seen corresponding path program 1 times [2023-11-24 22:01:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633432919] [2023-11-24 22:01:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:47,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633432919] [2023-11-24 22:01:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633432919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:47,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681278111] [2023-11-24 22:01:47,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:47,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 22:01:47,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:47,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:47,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 22:01:47,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:49,370 INFO L124 PetriNetUnfolderBase]: 4217/7242 cut-off events. [2023-11-24 22:01:49,370 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-24 22:01:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 7242 events. 4217/7242 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 55230 event pairs, 2503 based on Foata normal form. 5/6608 useless extension candidates. Maximal degree in co-relation 13340. Up to 4384 conditions per place. [2023-11-24 22:01:49,564 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-24 22:01:49,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 220 flow [2023-11-24 22:01:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 22:01:49,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 22:01:49,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 22:01:49,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 22:01:49,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:49,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 22:01:49,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,570 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 149 transitions. [2023-11-24 22:01:49,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 220 flow [2023-11-24 22:01:49,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:49,575 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-24 22:01:49,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-24 22:01:49,577 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-11-24 22:01:49,578 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-24 22:01:49,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:49,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:01:49,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:49,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 429342016, now seen corresponding path program 1 times [2023-11-24 22:01:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350146539] [2023-11-24 22:01:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350146539] [2023-11-24 22:01:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350146539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911240981] [2023-11-24 22:01:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:49,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-24 22:01:49,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 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) [2023-11-24 22:01:49,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:49,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-24 22:01:49,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:50,725 INFO L124 PetriNetUnfolderBase]: 3311/5479 cut-off events. [2023-11-24 22:01:50,726 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-24 22:01:50,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 5479 events. 3311/5479 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 39618 event pairs, 593 based on Foata normal form. 0/5397 useless extension candidates. Maximal degree in co-relation 10294. Up to 3661 conditions per place. [2023-11-24 22:01:50,764 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 41 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2023-11-24 22:01:50,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 262 flow [2023-11-24 22:01:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-24 22:01:50,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7960199004975125 [2023-11-24 22:01:50,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-24 22:01:50,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-24 22:01:50,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:50,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-24 22:01:50,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,769 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 160 transitions. [2023-11-24 22:01:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 262 flow [2023-11-24 22:01:50,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:50,774 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 120 flow [2023-11-24 22:01:50,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-24 22:01:50,777 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-11-24 22:01:50,777 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 120 flow [2023-11-24 22:01:50,777 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) [2023-11-24 22:01:50,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:50,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:50,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:01:50,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 67484712, now seen corresponding path program 1 times [2023-11-24 22:01:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442060886] [2023-11-24 22:01:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:50,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442060886] [2023-11-24 22:01:50,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442060886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:50,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109716387] [2023-11-24 22:01:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:50,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 22:01:50,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 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) [2023-11-24 22:01:50,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:50,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 22:01:50,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:51,673 INFO L124 PetriNetUnfolderBase]: 2920/5185 cut-off events. [2023-11-24 22:01:51,673 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-24 22:01:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 5185 events. 2920/5185 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 38384 event pairs, 1356 based on Foata normal form. 0/4950 useless extension candidates. Maximal degree in co-relation 9610. Up to 3460 conditions per place. [2023-11-24 22:01:51,718 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-24 22:01:51,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 210 flow [2023-11-24 22:01:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-24 22:01:51,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-24 22:01:51,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-24 22:01:51,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-24 22:01:51,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:51,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-24 22:01:51,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,723 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 144 transitions. [2023-11-24 22:01:51,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 210 flow [2023-11-24 22:01:51,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:51,726 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-24 22:01:51,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-24 22:01:51,727 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-11-24 22:01:51,727 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-24 22:01:51,728 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) [2023-11-24 22:01:51,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:51,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:01:51,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:51,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 67484713, now seen corresponding path program 1 times [2023-11-24 22:01:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587979227] [2023-11-24 22:01:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:51,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587979227] [2023-11-24 22:01:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587979227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355222133] [2023-11-24 22:01:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:51,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 22:01:51,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 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) [2023-11-24 22:01:51,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 22:01:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:52,623 INFO L124 PetriNetUnfolderBase]: 2903/5104 cut-off events. [2023-11-24 22:01:52,624 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 22:01:52,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 5104 events. 2903/5104 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 37432 event pairs, 1884 based on Foata normal form. 12/4885 useless extension candidates. Maximal degree in co-relation 9375. Up to 3431 conditions per place. [2023-11-24 22:01:52,664 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-24 22:01:52,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2023-11-24 22:01:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 22:01:52,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-24 22:01:52,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 22:01:52,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 22:01:52,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:52,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 22:01:52,667 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) [2023-11-24 22:01:52,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,671 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 146 transitions. [2023-11-24 22:01:52,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2023-11-24 22:01:52,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:52,676 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-24 22:01:52,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-24 22:01:52,678 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-11-24 22:01:52,679 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-24 22:01:52,679 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) [2023-11-24 22:01:52,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:52,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:52,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:01:52,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:52,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash 392802744, now seen corresponding path program 1 times [2023-11-24 22:01:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:52,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337020043] [2023-11-24 22:01:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337020043] [2023-11-24 22:01:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337020043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471614172] [2023-11-24 22:01:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:52,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:52,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 22:01:52,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 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) [2023-11-24 22:01:52,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:52,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 22:01:52,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:53,376 INFO L124 PetriNetUnfolderBase]: 2978/5135 cut-off events. [2023-11-24 22:01:53,376 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 22:01:53,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9527 conditions, 5135 events. 2978/5135 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 37130 event pairs, 1424 based on Foata normal form. 0/4968 useless extension candidates. Maximal degree in co-relation 9517. Up to 3426 conditions per place. [2023-11-24 22:01:53,414 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-24 22:01:53,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 204 flow [2023-11-24 22:01:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:53,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-24 22:01:53,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-24 22:01:53,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-24 22:01:53,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-24 22:01:53,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:53,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-24 22:01:53,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,418 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 144 transitions. [2023-11-24 22:01:53,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 204 flow [2023-11-24 22:01:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:53,421 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-24 22:01:53,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-24 22:01:53,422 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-11-24 22:01:53,422 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-24 22:01:53,422 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) [2023-11-24 22:01:53,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:53,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:01:53,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:53,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash 392802745, now seen corresponding path program 1 times [2023-11-24 22:01:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832296138] [2023-11-24 22:01:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:53,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832296138] [2023-11-24 22:01:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832296138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686088728] [2023-11-24 22:01:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:53,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:53,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 22:01:53,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:53,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 22:01:53,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:54,270 INFO L124 PetriNetUnfolderBase]: 2903/5084 cut-off events. [2023-11-24 22:01:54,271 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-24 22:01:54,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 5084 events. 2903/5084 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37056 event pairs, 920 based on Foata normal form. 36/4977 useless extension candidates. Maximal degree in co-relation 9379. Up to 3315 conditions per place. [2023-11-24 22:01:54,310 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-24 22:01:54,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 200 flow [2023-11-24 22:01:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 22:01:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-24 22:01:54,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 22:01:54,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 22:01:54,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:54,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 22:01:54,313 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) [2023-11-24 22:01:54,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,315 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 146 transitions. [2023-11-24 22:01:54,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 200 flow [2023-11-24 22:01:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:54,318 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-24 22:01:54,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-24 22:01:54,319 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-11-24 22:01:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-24 22:01:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:54,319 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] [2023-11-24 22:01:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:01:54,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:54,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1649136896, now seen corresponding path program 1 times [2023-11-24 22:01:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773350061] [2023-11-24 22:01:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773350061] [2023-11-24 22:01:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773350061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:01:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737482159] [2023-11-24 22:01:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:01:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:01:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:01:55,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-24 22:01:55,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 9 states, 9 states have (on average 36.77777777777778) internal successors, (331), 9 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:55,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:55,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-24 22:01:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:57,146 INFO L124 PetriNetUnfolderBase]: 3661/5607 cut-off events. [2023-11-24 22:01:57,147 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-24 22:01:57,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10970 conditions, 5607 events. 3661/5607 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 36004 event pairs, 153 based on Foata normal form. 180/5724 useless extension candidates. Maximal degree in co-relation 10960. Up to 3384 conditions per place. [2023-11-24 22:01:57,176 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 47 selfloop transitions, 5 changer transitions 13/88 dead transitions. [2023-11-24 22:01:57,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 320 flow [2023-11-24 22:01:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:01:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:01:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2023-11-24 22:01:57,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455223880597015 [2023-11-24 22:01:57,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2023-11-24 22:01:57,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2023-11-24 22:01:57,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:57,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2023-11-24 22:01:57,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,184 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,184 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 8 states and 346 transitions. [2023-11-24 22:01:57,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 320 flow [2023-11-24 22:01:57,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:57,188 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 114 flow [2023-11-24 22:01:57,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-11-24 22:01:57,189 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2023-11-24 22:01:57,189 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 114 flow [2023-11-24 22:01:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.77777777777778) internal successors, (331), 9 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:57,190 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] [2023-11-24 22:01:57,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:01:57,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:01:57,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1649138242, now seen corresponding path program 1 times [2023-11-24 22:01:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116538352] [2023-11-24 22:01:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116538352] [2023-11-24 22:01:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116538352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135109778] [2023-11-24 22:01:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:57,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:57,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-11-24 22:01:57,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:57,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-11-24 22:01:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:02,455 INFO L124 PetriNetUnfolderBase]: 34962/50618 cut-off events. [2023-11-24 22:02:02,455 INFO L125 PetriNetUnfolderBase]: For 2440/2440 co-relation queries the response was YES. [2023-11-24 22:02:02,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100441 conditions, 50618 events. 34962/50618 cut-off events. For 2440/2440 co-relation queries the response was YES. Maximal size of possible extension queue 2222. Compared 369772 event pairs, 8999 based on Foata normal form. 0/49438 useless extension candidates. Maximal degree in co-relation 100430. Up to 20017 conditions per place. [2023-11-24 22:02:02,731 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 49 selfloop transitions, 8 changer transitions 102/176 dead transitions. [2023-11-24 22:02:02,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 176 transitions, 714 flow [2023-11-24 22:02:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:02:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:02:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 431 transitions. [2023-11-24 22:02:02,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714759535655058 [2023-11-24 22:02:02,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 431 transitions. [2023-11-24 22:02:02,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 431 transitions. [2023-11-24 22:02:02,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:02,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 431 transitions. [2023-11-24 22:02:02,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.888888888888886) internal successors, (431), 9 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,740 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 114 flow. Second operand 9 states and 431 transitions. [2023-11-24 22:02:02,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 176 transitions, 714 flow [2023-11-24 22:02:02,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 176 transitions, 692 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 22:02:02,746 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 216 flow [2023-11-24 22:02:02,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-24 22:02:02,747 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-24 22:02:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 216 flow [2023-11-24 22:02:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:02,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:02:02,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:02:02,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1559299871, now seen corresponding path program 1 times [2023-11-24 22:02:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:02,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339492078] [2023-11-24 22:02:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:02,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339492078] [2023-11-24 22:02:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339492078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763076324] [2023-11-24 22:02:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:03,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-24 22:02:03,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 216 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) [2023-11-24 22:02:03,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:03,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-24 22:02:03,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:07,234 INFO L124 PetriNetUnfolderBase]: 18841/30072 cut-off events. [2023-11-24 22:02:07,234 INFO L125 PetriNetUnfolderBase]: For 30219/33903 co-relation queries the response was YES. [2023-11-24 22:02:07,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81128 conditions, 30072 events. 18841/30072 cut-off events. For 30219/33903 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 247070 event pairs, 5201 based on Foata normal form. 868/29716 useless extension candidates. Maximal degree in co-relation 81109. Up to 16611 conditions per place. [2023-11-24 22:02:07,443 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 34 selfloop transitions, 3 changer transitions 43/107 dead transitions. [2023-11-24 22:02:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 107 transitions, 544 flow [2023-11-24 22:02:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:02:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:02:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2023-11-24 22:02:07,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6844349680170576 [2023-11-24 22:02:07,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 321 transitions. [2023-11-24 22:02:07,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 321 transitions. [2023-11-24 22:02:07,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:07,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 321 transitions. [2023-11-24 22:02:07,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.857142857142854) internal successors, (321), 7 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:07,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:07,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:07,450 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 216 flow. Second operand 7 states and 321 transitions. [2023-11-24 22:02:07,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 107 transitions, 544 flow [2023-11-24 22:02:07,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 490 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:07,722 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 201 flow [2023-11-24 22:02:07,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-24 22:02:07,723 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-24 22:02:07,723 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 201 flow [2023-11-24 22:02:07,723 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) [2023-11-24 22:02:07,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:07,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:02:07,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:02:07,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 572581034, now seen corresponding path program 1 times [2023-11-24 22:02:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575037659] [2023-11-24 22:02:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575037659] [2023-11-24 22:02:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575037659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:07,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320603653] [2023-11-24 22:02:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 67 [2023-11-24 22:02:07,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:07,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:07,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 67 [2023-11-24 22:02:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:12,519 INFO L124 PetriNetUnfolderBase]: 19900/31772 cut-off events. [2023-11-24 22:02:12,519 INFO L125 PetriNetUnfolderBase]: For 27191/27602 co-relation queries the response was YES. [2023-11-24 22:02:12,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82519 conditions, 31772 events. 19900/31772 cut-off events. For 27191/27602 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 258803 event pairs, 6460 based on Foata normal form. 845/32228 useless extension candidates. Maximal degree in co-relation 82497. Up to 20487 conditions per place. [2023-11-24 22:02:12,744 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 40 selfloop transitions, 5 changer transitions 47/117 dead transitions. [2023-11-24 22:02:12,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 611 flow [2023-11-24 22:02:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:02:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:02:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 324 transitions. [2023-11-24 22:02:12,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6908315565031983 [2023-11-24 22:02:12,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 324 transitions. [2023-11-24 22:02:12,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 324 transitions. [2023-11-24 22:02:12,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:12,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 324 transitions. [2023-11-24 22:02:12,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,750 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 201 flow. Second operand 7 states and 324 transitions. [2023-11-24 22:02:12,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 611 flow [2023-11-24 22:02:13,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 585 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-24 22:02:13,502 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 238 flow [2023-11-24 22:02:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-11-24 22:02:13,503 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-11-24 22:02:13,503 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 238 flow [2023-11-24 22:02:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:13,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:02:13,504 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:02:13,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash -226709629, now seen corresponding path program 1 times [2023-11-24 22:02:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008058885] [2023-11-24 22:02:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008058885] [2023-11-24 22:02:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008058885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:02:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810251472] [2023-11-24 22:02:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:13,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-11-24 22:02:13,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-11-24 22:02:13,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:19,239 INFO L124 PetriNetUnfolderBase]: 22017/32600 cut-off events. [2023-11-24 22:02:19,240 INFO L125 PetriNetUnfolderBase]: For 40547/41452 co-relation queries the response was YES. [2023-11-24 22:02:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93572 conditions, 32600 events. 22017/32600 cut-off events. For 40547/41452 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 231578 event pairs, 3909 based on Foata normal form. 760/33243 useless extension candidates. Maximal degree in co-relation 93551. Up to 12245 conditions per place. [2023-11-24 22:02:19,452 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 67 selfloop transitions, 8 changer transitions 84/176 dead transitions. [2023-11-24 22:02:19,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 176 transitions, 1022 flow [2023-11-24 22:02:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:02:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:02:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 447 transitions. [2023-11-24 22:02:19,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6671641791044776 [2023-11-24 22:02:19,455 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 447 transitions. [2023-11-24 22:02:19,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 447 transitions. [2023-11-24 22:02:19,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:19,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 447 transitions. [2023-11-24 22:02:19,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,461 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,461 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 238 flow. Second operand 10 states and 447 transitions. [2023-11-24 22:02:19,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 176 transitions, 1022 flow [2023-11-24 22:02:19,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 997 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-24 22:02:19,793 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 317 flow [2023-11-24 22:02:19,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=317, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-11-24 22:02:19,795 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2023-11-24 22:02:19,795 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 317 flow [2023-11-24 22:02:19,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:19,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:19,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:02:19,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:02:19,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1781159899, now seen corresponding path program 1 times [2023-11-24 22:02:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:19,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611284100] [2023-11-24 22:02:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611284100] [2023-11-24 22:02:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611284100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:19,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:19,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:02:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347569283] [2023-11-24 22:02:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:02:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:02:19,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:02:20,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-24 22:02:20,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2023-11-24 22:02:20,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:20,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-24 22:02:20,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:26,768 INFO L124 PetriNetUnfolderBase]: 32663/49015 cut-off events. [2023-11-24 22:02:26,768 INFO L125 PetriNetUnfolderBase]: For 55521/58935 co-relation queries the response was YES. [2023-11-24 22:02:27,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123051 conditions, 49015 events. 32663/49015 cut-off events. For 55521/58935 co-relation queries the response was YES. Maximal size of possible extension queue 2025. Compared 369089 event pairs, 5276 based on Foata normal form. 1997/49622 useless extension candidates. Maximal degree in co-relation 123022. Up to 26207 conditions per place. [2023-11-24 22:02:27,218 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 60 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2023-11-24 22:02:27,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 97 transitions, 567 flow [2023-11-24 22:02:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:02:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:02:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2023-11-24 22:02:27,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238805970149254 [2023-11-24 22:02:27,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 194 transitions. [2023-11-24 22:02:27,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 194 transitions. [2023-11-24 22:02:27,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:27,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 194 transitions. [2023-11-24 22:02:27,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:27,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:27,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:27,222 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 317 flow. Second operand 4 states and 194 transitions. [2023-11-24 22:02:27,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 97 transitions, 567 flow [2023-11-24 22:02:27,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 546 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-24 22:02:27,931 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 342 flow [2023-11-24 22:02:27,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2023-11-24 22:02:27,932 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-11-24 22:02:27,932 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 342 flow [2023-11-24 22:02:27,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2023-11-24 22:02:27,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:27,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 22:02:27,934 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 22:02:27,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash -770428449, now seen corresponding path program 1 times [2023-11-24 22:02:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872838303] [2023-11-24 22:02:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:27,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:28,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872838303] [2023-11-24 22:02:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872838303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:28,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:28,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:28,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533591123] [2023-11-24 22:02:28,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:28,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:28,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-24 22:02:28,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 342 flow. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:28,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:28,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-24 22:02:28,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand