./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.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_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:17,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:17,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:02:17,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:17,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:17,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:17,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:17,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:17,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:17,927 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:17,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:17,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:17,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:17,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:17,930 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:17,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:17,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:17,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:17,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:17,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:17,934 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:02:17,938 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:02:17,939 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:02:17,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:17,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:02:17,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:17,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:17,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:17,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:17,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:17,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:17,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:17,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:17,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:17,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:17,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:17,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:17,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:17,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:17,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:17,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:17,953 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 [2023-11-26 12:02:18,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:18,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:18,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:18,336 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:18,337 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:18,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 12:02:21,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:21,764 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:21,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 12:02:21,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/data/1115d774b/bda30f17bf8145448146c8b138b80203/FLAG19be0575d [2023-11-26 12:02:21,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/data/1115d774b/bda30f17bf8145448146c8b138b80203 [2023-11-26 12:02:21,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:21,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:21,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:21,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:21,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:21,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:21" (1/1) ... [2023-11-26 12:02:21,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68327a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:21, skipping insertion in model container [2023-11-26 12:02:21,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:21" (1/1) ... [2023-11-26 12:02:21,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:22,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:22,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:22,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:22,484 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:02:22,485 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:02:22,493 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:22,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22 WrapperNode [2023-11-26 12:02:22,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:22,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:22,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:22,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:22,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,622 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-26 12:02:22,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:22,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:22,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:22,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:22,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,691 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]. [2023-11-26 12:02:22,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:22,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:22,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:22,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:22,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (1/1) ... [2023-11-26 12:02:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:22,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:22,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f16bd57-11a2-438c-872c-d54e759b59c4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:02:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:02:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:02:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:02:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:02:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:02:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:02:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:02:22,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:02:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:02:22,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:02:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:02:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:02:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:02:22,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:02:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:02:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:02:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:02:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:02:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:02:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:22,851 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:02:23,052 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:23,054 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:23,603 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:23,887 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:23,887 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:02:23,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:23 BoogieIcfgContainer [2023-11-26 12:02:23,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:23,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:23,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:23,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:23,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:21" (1/3) ... [2023-11-26 12:02:23,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35807d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:23, skipping insertion in model container [2023-11-26 12:02:23,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:22" (2/3) ... [2023-11-26 12:02:23,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35807d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:23, skipping insertion in model container [2023-11-26 12:02:23,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:23" (3/3) ... [2023-11-26 12:02:23,902 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 12:02:23,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:23,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 12:02:23,925 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:02:24,059 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:02:24,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 12:02:24,171 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-26 12:02:24,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:24,176 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. [2023-11-26 12:02:24,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 12:02:24,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 63 transitions, 138 flow [2023-11-26 12:02:24,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:24,209 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;@55ede85a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:24,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 12:02:24,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:02:24,213 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 12:02:24,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:24,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:02:24,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:24,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash 14397, now seen corresponding path program 1 times [2023-11-26 12:02:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292098252] [2023-11-26 12:02:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292098252] [2023-11-26 12:02:24,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292098252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213041704] [2023-11-26 12:02:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:24,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:24,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 12:02:24,663 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) [2023-11-26 12:02:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 12:02:24,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:26,459 INFO L124 PetriNetUnfolderBase]: 4217/7253 cut-off events. [2023-11-26 12:02:26,460 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-26 12:02:26,490 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. [2023-11-26 12:02:26,550 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-26 12:02:26,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 228 flow [2023-11-26 12:02:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 12:02:26,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 12:02:26,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 12:02:26,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 12:02:26,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:26,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 12:02:26,578 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) [2023-11-26 12:02:26,583 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) [2023-11-26 12:02:26,584 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) [2023-11-26 12:02:26,585 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 138 flow. Second operand 3 states and 149 transitions. [2023-11-26 12:02:26,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 228 flow [2023-11-26 12:02:26,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:02:26,601 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-26 12:02:26,603 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} [2023-11-26 12:02:26,609 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-26 12:02:26,609 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-26 12:02:26,610 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) [2023-11-26 12:02:26,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:26,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:02:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:02:26,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:26,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash 14398, now seen corresponding path program 1 times [2023-11-26 12:02:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58820570] [2023-11-26 12:02:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58820570] [2023-11-26 12:02:26,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58820570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:26,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:26,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215592064] [2023-11-26 12:02:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:26,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 12:02:26,838 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) [2023-11-26 12:02:26,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:26,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 12:02:26,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:28,284 INFO L124 PetriNetUnfolderBase]: 4217/7252 cut-off events. [2023-11-26 12:02:28,285 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-26 12:02:28,314 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. [2023-11-26 12:02:28,369 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-26 12:02:28,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 224 flow [2023-11-26 12:02:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 12:02:28,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 12:02:28,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 12:02:28,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 12:02:28,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:28,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 12:02:28,374 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) [2023-11-26 12:02:28,375 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) [2023-11-26 12:02:28,376 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) [2023-11-26 12:02:28,376 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 149 transitions. [2023-11-26 12:02:28,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 224 flow [2023-11-26 12:02:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:28,389 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-26 12:02:28,389 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} [2023-11-26 12:02:28,390 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2023-11-26 12:02:28,391 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-26 12:02:28,391 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) [2023-11-26 12:02:28,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:28,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:28,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:02:28,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:28,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash 429340393, now seen corresponding path program 1 times [2023-11-26 12:02:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218731002] [2023-11-26 12:02:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:28,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218731002] [2023-11-26 12:02:28,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218731002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:28,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:28,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:28,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307479273] [2023-11-26 12:02:28,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:28,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:28,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:28,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 12:02:28,550 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) [2023-11-26 12:02:28,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:28,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 12:02:28,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:29,943 INFO L124 PetriNetUnfolderBase]: 4221/7215 cut-off events. [2023-11-26 12:02:29,944 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-26 12:02:29,974 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. [2023-11-26 12:02:30,019 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 12:02:30,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 224 flow [2023-11-26 12:02:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-26 12:02:30,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2023-11-26 12:02:30,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-26 12:02:30,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-26 12:02:30,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:30,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-26 12:02:30,023 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) [2023-11-26 12:02:30,024 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) [2023-11-26 12:02:30,025 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) [2023-11-26 12:02:30,025 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 147 transitions. [2023-11-26 12:02:30,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 224 flow [2023-11-26 12:02:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:30,038 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-26 12:02:30,038 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} [2023-11-26 12:02:30,039 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-26 12:02:30,039 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-26 12:02:30,040 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) [2023-11-26 12:02:30,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:30,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:02:30,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:30,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 429340394, now seen corresponding path program 1 times [2023-11-26 12:02:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869345358] [2023-11-26 12:02:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:30,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869345358] [2023-11-26 12:02:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869345358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:30,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019742325] [2023-11-26 12:02:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:30,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:30,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 12:02:30,151 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) [2023-11-26 12:02:30,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:30,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 12:02:30,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:31,430 INFO L124 PetriNetUnfolderBase]: 4217/7242 cut-off events. [2023-11-26 12:02:31,431 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-26 12:02:31,457 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. [2023-11-26 12:02:31,498 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 12:02:31,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 220 flow [2023-11-26 12:02:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 12:02:31,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 12:02:31,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 12:02:31,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 12:02:31,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:31,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 12:02:31,503 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) [2023-11-26 12:02:31,506 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) [2023-11-26 12:02:31,506 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) [2023-11-26 12:02:31,507 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 149 transitions. [2023-11-26 12:02:31,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 220 flow [2023-11-26 12:02:31,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:31,513 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-26 12:02:31,513 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} [2023-11-26 12:02:31,515 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-11-26 12:02:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-26 12:02:31,516 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) [2023-11-26 12:02:31,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:31,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:31,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:02:31,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash 429342016, now seen corresponding path program 1 times [2023-11-26 12:02:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827680569] [2023-11-26 12:02:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827680569] [2023-11-26 12:02:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827680569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:31,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764962032] [2023-11-26 12:02:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:31,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:31,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 12:02:31,709 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) [2023-11-26 12:02:31,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:31,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 12:02:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:32,669 INFO L124 PetriNetUnfolderBase]: 3311/5479 cut-off events. [2023-11-26 12:02:32,670 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-26 12:02:32,691 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. [2023-11-26 12:02:32,722 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 41 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2023-11-26 12:02:32,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 262 flow [2023-11-26 12:02:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-26 12:02:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7960199004975125 [2023-11-26 12:02:32,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-26 12:02:32,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-26 12:02:32,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:32,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-26 12:02:32,726 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) [2023-11-26 12:02:32,728 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) [2023-11-26 12:02:32,728 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) [2023-11-26 12:02:32,729 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 160 transitions. [2023-11-26 12:02:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 262 flow [2023-11-26 12:02:32,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:32,734 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 120 flow [2023-11-26 12:02:32,735 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} [2023-11-26 12:02:32,738 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-11-26 12:02:32,738 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 120 flow [2023-11-26 12:02:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:32,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:32,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:32,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:02:32,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:32,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 67484712, now seen corresponding path program 1 times [2023-11-26 12:02:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:32,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565506026] [2023-11-26 12:02:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:32,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565506026] [2023-11-26 12:02:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565506026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:32,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:32,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:32,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908132741] [2023-11-26 12:02:32,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:32,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 12:02:32,856 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) [2023-11-26 12:02:32,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:32,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 12:02:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:33,793 INFO L124 PetriNetUnfolderBase]: 2920/5185 cut-off events. [2023-11-26 12:02:33,794 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-26 12:02:33,806 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. [2023-11-26 12:02:33,835 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-26 12:02:33,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 210 flow [2023-11-26 12:02:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-26 12:02:33,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-26 12:02:33,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-26 12:02:33,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-26 12:02:33,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:33,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-26 12:02:33,838 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) [2023-11-26 12:02:33,839 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) [2023-11-26 12:02:33,840 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) [2023-11-26 12:02:33,840 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 144 transitions. [2023-11-26 12:02:33,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 210 flow [2023-11-26 12:02:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:33,842 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 12:02:33,843 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} [2023-11-26 12:02:33,843 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-11-26 12:02:33,844 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 12:02:33,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:33,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:33,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:02:33,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:33,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 67484713, now seen corresponding path program 1 times [2023-11-26 12:02:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50613049] [2023-11-26 12:02:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50613049] [2023-11-26 12:02:33,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50613049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:33,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:33,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172800580] [2023-11-26 12:02:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:33,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:33,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 12:02:33,954 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) [2023-11-26 12:02:33,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:33,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 12:02:33,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:34,732 INFO L124 PetriNetUnfolderBase]: 2903/5104 cut-off events. [2023-11-26 12:02:34,732 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-26 12:02:34,759 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. [2023-11-26 12:02:34,786 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-26 12:02:34,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2023-11-26 12:02:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 12:02:34,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-26 12:02:34,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 12:02:34,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 12:02:34,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:34,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 12:02:34,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:34,794 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) [2023-11-26 12:02:34,795 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) [2023-11-26 12:02:34,795 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 146 transitions. [2023-11-26 12:02:34,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2023-11-26 12:02:34,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:34,804 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 12:02:34,804 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} [2023-11-26 12:02:34,805 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-11-26 12:02:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 12:02:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:34,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:34,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:02:34,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash 392802744, now seen corresponding path program 1 times [2023-11-26 12:02:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646046140] [2023-11-26 12:02:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646046140] [2023-11-26 12:02:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646046140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:34,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416312128] [2023-11-26 12:02:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:34,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 12:02:34,898 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) [2023-11-26 12:02:34,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:34,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 12:02:34,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:35,863 INFO L124 PetriNetUnfolderBase]: 2978/5135 cut-off events. [2023-11-26 12:02:35,863 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-26 12:02:35,880 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. [2023-11-26 12:02:35,902 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-26 12:02:35,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 204 flow [2023-11-26 12:02:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-26 12:02:35,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-26 12:02:35,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-26 12:02:35,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-26 12:02:35,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:35,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-26 12:02:35,906 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) [2023-11-26 12:02:35,906 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) [2023-11-26 12:02:35,907 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) [2023-11-26 12:02:35,907 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 144 transitions. [2023-11-26 12:02:35,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 204 flow [2023-11-26 12:02:35,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:35,911 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-26 12:02:35,911 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} [2023-11-26 12:02:35,914 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-11-26 12:02:35,914 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-26 12:02:35,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:35,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:35,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:35,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:02:35,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:35,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:35,916 INFO L85 PathProgramCache]: Analyzing trace with hash 392802745, now seen corresponding path program 1 times [2023-11-26 12:02:35,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:35,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138038100] [2023-11-26 12:02:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:35,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138038100] [2023-11-26 12:02:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138038100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:36,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:36,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:36,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270958010] [2023-11-26 12:02:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:36,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 12:02:36,045 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) [2023-11-26 12:02:36,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:36,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 12:02:36,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:36,798 INFO L124 PetriNetUnfolderBase]: 2903/5084 cut-off events. [2023-11-26 12:02:36,798 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-26 12:02:36,817 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. [2023-11-26 12:02:36,843 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-26 12:02:36,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 200 flow [2023-11-26 12:02:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 12:02:36,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-26 12:02:36,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 12:02:36,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 12:02:36,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:36,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 12:02:36,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:36,848 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) [2023-11-26 12:02:36,848 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) [2023-11-26 12:02:36,848 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 146 transitions. [2023-11-26 12:02:36,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 200 flow [2023-11-26 12:02:36,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:36,851 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-26 12:02:36,851 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} [2023-11-26 12:02:36,852 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-11-26 12:02:36,852 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-26 12:02:36,852 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) [2023-11-26 12:02:36,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:36,853 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] [2023-11-26 12:02:36,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:02:36,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:36,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1649136896, now seen corresponding path program 1 times [2023-11-26 12:02:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171819644] [2023-11-26 12:02:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171819644] [2023-11-26 12:02:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171819644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:37,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:02:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577823239] [2023-11-26 12:02:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:38,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 67 [2023-11-26 12:02:38,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 35.7) internal successors, (357), 10 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:38,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:38,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 67 [2023-11-26 12:02:38,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:40,328 INFO L124 PetriNetUnfolderBase]: 7189/11678 cut-off events. [2023-11-26 12:02:40,328 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2023-11-26 12:02:40,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22130 conditions, 11678 events. 7189/11678 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 88002 event pairs, 1744 based on Foata normal form. 192/11778 useless extension candidates. Maximal degree in co-relation 22119. Up to 4507 conditions per place. [2023-11-26 12:02:40,396 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 67 selfloop transitions, 6 changer transitions 13/108 dead transitions. [2023-11-26 12:02:40,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 410 flow [2023-11-26 12:02:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:02:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 359 transitions. [2023-11-26 12:02:40,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6697761194029851 [2023-11-26 12:02:40,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 359 transitions. [2023-11-26 12:02:40,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 359 transitions. [2023-11-26 12:02:40,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:40,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 359 transitions. [2023-11-26 12:02:40,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:40,401 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) [2023-11-26 12:02:40,402 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) [2023-11-26 12:02:40,402 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 8 states and 359 transitions. [2023-11-26 12:02:40,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 410 flow [2023-11-26 12:02:40,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:40,405 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 138 flow [2023-11-26 12:02:40,405 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-11-26 12:02:40,406 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-26 12:02:40,406 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 138 flow [2023-11-26 12:02:40,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.7) internal successors, (357), 10 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:40,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:40,407 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] [2023-11-26 12:02:40,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:02:40,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:40,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1649138242, now seen corresponding path program 1 times [2023-11-26 12:02:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416344403] [2023-11-26 12:02:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:40,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416344403] [2023-11-26 12:02:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416344403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:40,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:40,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093600017] [2023-11-26 12:02:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:40,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-11-26 12:02:40,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 138 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) [2023-11-26 12:02:40,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:40,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-11-26 12:02:40,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:51,605 INFO L124 PetriNetUnfolderBase]: 61998/90556 cut-off events. [2023-11-26 12:02:51,605 INFO L125 PetriNetUnfolderBase]: For 8937/8985 co-relation queries the response was YES. [2023-11-26 12:02:51,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182848 conditions, 90556 events. 61998/90556 cut-off events. For 8937/8985 co-relation queries the response was YES. Maximal size of possible extension queue 3774. Compared 717954 event pairs, 19570 based on Foata normal form. 3/88448 useless extension candidates. Maximal degree in co-relation 182833. Up to 39043 conditions per place. [2023-11-26 12:02:52,107 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 116 selfloop transitions, 34 changer transitions 14/182 dead transitions. [2023-11-26 12:02:52,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 182 transitions, 782 flow [2023-11-26 12:02:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:02:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:02:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 432 transitions. [2023-11-26 12:02:52,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-26 12:02:52,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 432 transitions. [2023-11-26 12:02:52,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 432 transitions. [2023-11-26 12:02:52,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:52,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 432 transitions. [2023-11-26 12:02:52,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,124 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) [2023-11-26 12:02:52,125 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) [2023-11-26 12:02:52,125 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 138 flow. Second operand 9 states and 432 transitions. [2023-11-26 12:02:52,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 182 transitions, 782 flow [2023-11-26 12:02:52,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 182 transitions, 772 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 12:02:52,394 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 406 flow [2023-11-26 12:02:52,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=406, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2023-11-26 12:02:52,395 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-26 12:02:52,395 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 406 flow [2023-11-26 12:02:52,395 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) [2023-11-26 12:02:52,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:52,396 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] [2023-11-26 12:02:52,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:02:52,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 12:02:52,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1010216433, now seen corresponding path program 1 times [2023-11-26 12:02:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:52,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017808512] [2023-11-26 12:02:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:52,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017808512] [2023-11-26 12:02:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017808512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:52,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404857617] [2023-11-26 12:02:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:52,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-26 12:02:52,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:52,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:52,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-26 12:02:52,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:06,463 INFO L124 PetriNetUnfolderBase]: 62146/96687 cut-off events. [2023-11-26 12:03:06,463 INFO L125 PetriNetUnfolderBase]: For 103987/108776 co-relation queries the response was YES. [2023-11-26 12:03:06,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274291 conditions, 96687 events. 62146/96687 cut-off events. For 103987/108776 co-relation queries the response was YES. Maximal size of possible extension queue 4732. Compared 872226 event pairs, 15626 based on Foata normal form. 1917/97121 useless extension candidates. Maximal degree in co-relation 274270. Up to 38551 conditions per place. [2023-11-26 12:03:07,248 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 95 selfloop transitions, 31 changer transitions 0/166 dead transitions. [2023-11-26 12:03:07,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 166 transitions, 987 flow [2023-11-26 12:03:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:03:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:03:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 372 transitions. [2023-11-26 12:03:07,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6940298507462687 [2023-11-26 12:03:07,251 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 372 transitions. [2023-11-26 12:03:07,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 372 transitions. [2023-11-26 12:03:07,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:07,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 372 transitions. [2023-11-26 12:03:07,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:07,255 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) [2023-11-26 12:03:07,255 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) [2023-11-26 12:03:07,256 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 406 flow. Second operand 8 states and 372 transitions. [2023-11-26 12:03:07,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 166 transitions, 987 flow