./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.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_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:52:40,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:52:40,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:52:40,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:52:40,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:52:40,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:52:40,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:52:40,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:52:40,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:52:40,835 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:52:40,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:52:40,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:52:40,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:52:40,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:52:40,844 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:52:40,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:52:40,846 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:52:40,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:52:40,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:52:40,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:52:40,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:52:40,848 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:52:40,849 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:52:40,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:52:40,850 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:52:40,850 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:52:40,851 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:52:40,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:52:40,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:52:40,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:52:40,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:52:40,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:52:40,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:40,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:52:40,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:52:40,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:52:40,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:52:40,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:52:40,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:52:40,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:52:40,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:52:40,857 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_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2023-11-24 21:52:41,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:52:41,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:52:41,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:52:41,191 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:52:41,192 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:52:41,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:52:44,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:52:44,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:52:44,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:52:44,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/data/3a66b26ea/4afc963c1d8f40d8932eeb6e74f7ab28/FLAG499ee3b13 [2023-11-24 21:52:44,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/data/3a66b26ea/4afc963c1d8f40d8932eeb6e74f7ab28 [2023-11-24 21:52:44,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:52:44,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:52:44,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:44,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:52:44,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:52:44,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:44" (1/1) ... [2023-11-24 21:52:44,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b280c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:44, skipping insertion in model container [2023-11-24 21:52:44,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:44" (1/1) ... [2023-11-24 21:52:44,924 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:52:45,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:45,347 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:52:45,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:45,467 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:52:45,467 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:52:45,476 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:52:45,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45 WrapperNode [2023-11-24 21:52:45,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:45,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:45,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:52:45,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:52:45,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,559 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2023-11-24 21:52:45,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:45,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:52:45,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:52:45,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:52:45,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,621 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:52:45,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:52:45,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:52:45,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:52:45,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:52:45,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (1/1) ... [2023-11-24 21:52:45,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:45,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:52:45,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:52:45,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:52:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:52:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:52:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:52:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:52:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:52:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:52:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:52:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:52:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:52:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:52:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:52:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:52:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:52:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:52:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:52:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:52:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:52:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:52:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:52:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:52:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:52:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:52:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:52:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:52:45,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:52:45,757 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:52:45,912 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:52:45,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:52:46,184 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:46,301 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:46,301 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:52:46,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:46 BoogieIcfgContainer [2023-11-24 21:52:46,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:46,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:46,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:46,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:46,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:52:44" (1/3) ... [2023-11-24 21:52:46,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f924406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:46, skipping insertion in model container [2023-11-24 21:52:46,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:45" (2/3) ... [2023-11-24 21:52:46,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f924406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:46, skipping insertion in model container [2023-11-24 21:52:46,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:46" (3/3) ... [2023-11-24 21:52:46,312 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:52:46,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:46,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-24 21:52:46,333 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:52:46,390 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:52:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 62 transitions, 140 flow [2023-11-24 21:52:46,489 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2023-11-24 21:52:46,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-24 21:52:46,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 62 transitions, 140 flow [2023-11-24 21:52:46,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 57 transitions, 126 flow [2023-11-24 21:52:46,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:46,516 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;@7a579193, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:46,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-24 21:52:46,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:52:46,519 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:52:46,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:46,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:46,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:46,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:46,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 8400, now seen corresponding path program 1 times [2023-11-24 21:52:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:46,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907103409] [2023-11-24 21:52:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:46,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907103409] [2023-11-24 21:52:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907103409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468427965] [2023-11-24 21:52:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-24 21:52:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-24 21:52:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:47,194 INFO L124 PetriNetUnfolderBase]: 211/557 cut-off events. [2023-11-24 21:52:47,194 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-24 21:52:47,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 557 events. 211/557 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3589 event pairs, 179 based on Foata normal form. 32/526 useless extension candidates. Maximal degree in co-relation 915. Up to 289 conditions per place. [2023-11-24 21:52:47,207 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-24 21:52:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 170 flow [2023-11-24 21:52:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:52:47,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-24 21:52:47,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:47,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,243 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:52:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 170 flow [2023-11-24 21:52:47,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:47,251 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-24 21:52:47,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-24 21:52:47,266 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-11-24 21:52:47,267 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-24 21:52:47,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:47,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:47,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:52:47,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:47,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 8401, now seen corresponding path program 1 times [2023-11-24 21:52:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631285707] [2023-11-24 21:52:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:47,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631285707] [2023-11-24 21:52:47,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631285707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:47,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:47,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016791375] [2023-11-24 21:52:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:47,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:47,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-24 21:52:47,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:47,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-24 21:52:47,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:47,581 INFO L124 PetriNetUnfolderBase]: 211/556 cut-off events. [2023-11-24 21:52:47,581 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-24 21:52:47,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 556 events. 211/556 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3585 event pairs, 179 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 931. Up to 288 conditions per place. [2023-11-24 21:52:47,595 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-24 21:52:47,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 166 flow [2023-11-24 21:52:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:52:47,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-24 21:52:47,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:47,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:52:47,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,644 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:52:47,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 166 flow [2023-11-24 21:52:47,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:47,649 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-24 21:52:47,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-24 21:52:47,650 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-11-24 21:52:47,651 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-24 21:52:47,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:47,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:47,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:52:47,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:47,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 250490708, now seen corresponding path program 1 times [2023-11-24 21:52:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665095284] [2023-11-24 21:52:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665095284] [2023-11-24 21:52:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665095284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:47,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:47,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:47,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974552598] [2023-11-24 21:52:47,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:47,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-24 21:52:47,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:47,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-24 21:52:47,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:47,938 INFO L124 PetriNetUnfolderBase]: 212/554 cut-off events. [2023-11-24 21:52:47,938 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-24 21:52:47,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 554 events. 212/554 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3552 event pairs, 179 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 932. Up to 288 conditions per place. [2023-11-24 21:52:47,945 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-24 21:52:47,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 166 flow [2023-11-24 21:52:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-24 21:52:47,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-24 21:52:47,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-24 21:52:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-24 21:52:47,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:47,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-24 21:52:47,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,953 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 140 transitions. [2023-11-24 21:52:47,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 166 flow [2023-11-24 21:52:47,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:47,957 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-24 21:52:47,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-24 21:52:47,958 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-11-24 21:52:47,959 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-24 21:52:47,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:47,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:47,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:47,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:52:47,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:47,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash 250490709, now seen corresponding path program 1 times [2023-11-24 21:52:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563997884] [2023-11-24 21:52:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563997884] [2023-11-24 21:52:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563997884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:48,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85722536] [2023-11-24 21:52:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:48,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-24 21:52:48,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:48,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-24 21:52:48,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:48,192 INFO L124 PetriNetUnfolderBase]: 211/551 cut-off events. [2023-11-24 21:52:48,192 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-24 21:52:48,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 551 events. 211/551 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3538 event pairs, 178 based on Foata normal form. 2/495 useless extension candidates. Maximal degree in co-relation 928. Up to 285 conditions per place. [2023-11-24 21:52:48,198 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-24 21:52:48,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 162 flow [2023-11-24 21:52:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:52:48,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-24 21:52:48,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:48,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,203 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:52:48,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 162 flow [2023-11-24 21:52:48,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:48,206 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-24 21:52:48,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-24 21:52:48,208 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-11-24 21:52:48,208 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-24 21:52:48,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:48,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:48,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:52:48,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:48,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2010738991, now seen corresponding path program 1 times [2023-11-24 21:52:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:48,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742492834] [2023-11-24 21:52:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:48,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742492834] [2023-11-24 21:52:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742492834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160823483] [2023-11-24 21:52:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:48,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-24 21:52:48,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:48,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-24 21:52:48,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:48,491 INFO L124 PetriNetUnfolderBase]: 211/548 cut-off events. [2023-11-24 21:52:48,492 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-24 21:52:48,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 548 events. 211/548 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3532 event pairs, 95 based on Foata normal form. 4/500 useless extension candidates. Maximal degree in co-relation 925. Up to 276 conditions per place. [2023-11-24 21:52:48,499 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-24 21:52:48,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 160 flow [2023-11-24 21:52:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:52:48,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-24 21:52:48,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:48,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:52:48,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,505 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:52:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 160 flow [2023-11-24 21:52:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:48,507 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 110 flow [2023-11-24 21:52:48,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-24 21:52:48,509 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-11-24 21:52:48,509 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 110 flow [2023-11-24 21:52:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:48,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:48,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:52:48,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:48,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2010738990, now seen corresponding path program 1 times [2023-11-24 21:52:48,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:48,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881150729] [2023-11-24 21:52:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:48,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:48,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881150729] [2023-11-24 21:52:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881150729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:48,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:48,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774408770] [2023-11-24 21:52:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:48,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:48,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:48,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-24 21:52:48,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:48,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-24 21:52:48,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:48,707 INFO L124 PetriNetUnfolderBase]: 215/548 cut-off events. [2023-11-24 21:52:48,707 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-24 21:52:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 548 events. 215/548 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3530 event pairs, 95 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 935. Up to 284 conditions per place. [2023-11-24 21:52:48,714 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-24 21:52:48,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 160 flow [2023-11-24 21:52:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-24 21:52:48,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-24 21:52:48,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:48,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,720 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 3 states and 140 transitions. [2023-11-24 21:52:48,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 160 flow [2023-11-24 21:52:48,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:48,723 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 108 flow [2023-11-24 21:52:48,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-24 21:52:48,725 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-11-24 21:52:48,725 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 108 flow [2023-11-24 21:52:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:48,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:48,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:52:48,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:48,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 16621651, now seen corresponding path program 1 times [2023-11-24 21:52:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:48,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755614118] [2023-11-24 21:52:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755614118] [2023-11-24 21:52:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755614118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634628024] [2023-11-24 21:52:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:48,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:48,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:48,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-24 21:52:48,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:48,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-24 21:52:48,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:48,972 INFO L124 PetriNetUnfolderBase]: 223/544 cut-off events. [2023-11-24 21:52:48,973 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-24 21:52:48,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 544 events. 223/544 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3479 event pairs, 107 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 943. Up to 272 conditions per place. [2023-11-24 21:52:48,980 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-24 21:52:48,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 158 flow [2023-11-24 21:52:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-24 21:52:48,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-24 21:52:48,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:48,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-24 21:52:48,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,986 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 108 flow. Second operand 3 states and 140 transitions. [2023-11-24 21:52:48,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 158 flow [2023-11-24 21:52:48,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:48,989 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 106 flow [2023-11-24 21:52:48,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-24 21:52:48,990 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-11-24 21:52:48,990 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 106 flow [2023-11-24 21:52:48,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:48,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:48,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:48,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:52:48,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:48,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash 16621652, now seen corresponding path program 1 times [2023-11-24 21:52:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:48,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604204949] [2023-11-24 21:52:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604204949] [2023-11-24 21:52:49,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604204949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:49,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:49,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:52:49,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655760853] [2023-11-24 21:52:49,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:49,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:49,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:49,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-24 21:52:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-24 21:52:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:49,234 INFO L124 PetriNetUnfolderBase]: 211/524 cut-off events. [2023-11-24 21:52:49,235 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 21:52:49,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 524 events. 211/524 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3300 event pairs, 103 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 907. Up to 252 conditions per place. [2023-11-24 21:52:49,240 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-24 21:52:49,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 154 flow [2023-11-24 21:52:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:52:49,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-24 21:52:49,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:52:49,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:52:49,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:49,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:52:49,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,245 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 106 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:52:49,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 154 flow [2023-11-24 21:52:49,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:49,248 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 104 flow [2023-11-24 21:52:49,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-24 21:52:49,249 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-11-24 21:52:49,249 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 104 flow [2023-11-24 21:52:49,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:49,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:52:49,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:49,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1115631955, now seen corresponding path program 1 times [2023-11-24 21:52:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:49,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682323596] [2023-11-24 21:52:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682323596] [2023-11-24 21:52:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682323596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:50,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:52:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184336257] [2023-11-24 21:52:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:50,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:52:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:52:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:52:50,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 62 [2023-11-24 21:52:50,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 104 flow. Second operand has 10 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:50,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 62 [2023-11-24 21:52:50,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:51,248 INFO L124 PetriNetUnfolderBase]: 563/1196 cut-off events. [2023-11-24 21:52:51,248 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 21:52:51,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 1196 events. 563/1196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8706 event pairs, 168 based on Foata normal form. 24/1179 useless extension candidates. Maximal degree in co-relation 2163. Up to 365 conditions per place. [2023-11-24 21:52:51,261 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 39 selfloop transitions, 6 changer transitions 7/77 dead transitions. [2023-11-24 21:52:51,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 280 flow [2023-11-24 21:52:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:52:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:52:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 349 transitions. [2023-11-24 21:52:51,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7036290322580645 [2023-11-24 21:52:51,264 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 349 transitions. [2023-11-24 21:52:51,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 349 transitions. [2023-11-24 21:52:51,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:51,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 349 transitions. [2023-11-24 21:52:51,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.625) internal successors, (349), 8 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,269 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,269 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 104 flow. Second operand 8 states and 349 transitions. [2023-11-24 21:52:51,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 280 flow [2023-11-24 21:52:51,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:51,276 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 130 flow [2023-11-24 21:52:51,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2023-11-24 21:52:51,278 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-11-24 21:52:51,278 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 130 flow [2023-11-24 21:52:51,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:51,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:51,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:52:51,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:51,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1115633209, now seen corresponding path program 1 times [2023-11-24 21:52:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305765670] [2023-11-24 21:52:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:51,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:51,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305765670] [2023-11-24 21:52:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305765670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:51,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762127897] [2023-11-24 21:52:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:51,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:51,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 62 [2023-11-24 21:52:51,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:51,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 62 [2023-11-24 21:52:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:51,979 INFO L124 PetriNetUnfolderBase]: 969/2031 cut-off events. [2023-11-24 21:52:51,979 INFO L125 PetriNetUnfolderBase]: For 118/138 co-relation queries the response was YES. [2023-11-24 21:52:51,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2031 events. 969/2031 cut-off events. For 118/138 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15925 event pairs, 129 based on Foata normal form. 20/1962 useless extension candidates. Maximal degree in co-relation 3717. Up to 745 conditions per place. [2023-11-24 21:52:51,999 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 49 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-11-24 21:52:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 353 flow [2023-11-24 21:52:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:52:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:52:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 364 transitions. [2023-11-24 21:52:52,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7338709677419355 [2023-11-24 21:52:52,002 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 364 transitions. [2023-11-24 21:52:52,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 364 transitions. [2023-11-24 21:52:52,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:52,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 364 transitions. [2023-11-24 21:52:52,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,006 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,007 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 130 flow. Second operand 8 states and 364 transitions. [2023-11-24 21:52:52,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 353 flow [2023-11-24 21:52:52,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 342 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:52,011 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 191 flow [2023-11-24 21:52:52,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-11-24 21:52:52,014 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-11-24 21:52:52,014 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 191 flow [2023-11-24 21:52:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:52,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:52:52,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:52,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash -751361990, now seen corresponding path program 1 times [2023-11-24 21:52:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:52,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730241678] [2023-11-24 21:52:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730241678] [2023-11-24 21:52:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730241678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:52,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:52:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671148466] [2023-11-24 21:52:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:52:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:52:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:52:52,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:52:52,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:52,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:52:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:53,525 INFO L124 PetriNetUnfolderBase]: 3779/6784 cut-off events. [2023-11-24 21:52:53,525 INFO L125 PetriNetUnfolderBase]: For 1705/1751 co-relation queries the response was YES. [2023-11-24 21:52:53,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14613 conditions, 6784 events. 3779/6784 cut-off events. For 1705/1751 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 58701 event pairs, 550 based on Foata normal form. 118/6862 useless extension candidates. Maximal degree in co-relation 14595. Up to 1457 conditions per place. [2023-11-24 21:52:53,597 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 77 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2023-11-24 21:52:53,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 640 flow [2023-11-24 21:52:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:52:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:52:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 492 transitions. [2023-11-24 21:52:53,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7214076246334311 [2023-11-24 21:52:53,602 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 492 transitions. [2023-11-24 21:52:53,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 492 transitions. [2023-11-24 21:52:53,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:53,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 492 transitions. [2023-11-24 21:52:53,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 44.72727272727273) internal successors, (492), 11 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,610 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,610 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 191 flow. Second operand 11 states and 492 transitions. [2023-11-24 21:52:53,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 640 flow [2023-11-24 21:52:53,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:52:53,673 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 445 flow [2023-11-24 21:52:53,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=445, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2023-11-24 21:52:53,675 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2023-11-24 21:52:53,675 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 445 flow [2023-11-24 21:52:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:53,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:53,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:52:53,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:53,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1277651404, now seen corresponding path program 1 times [2023-11-24 21:52:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759043706] [2023-11-24 21:52:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759043706] [2023-11-24 21:52:54,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759043706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:54,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:54,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:52:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519680369] [2023-11-24 21:52:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:54,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:52:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:52:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:52:55,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-24 21:52:55,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 445 flow. Second operand has 11 states, 11 states have (on average 34.54545454545455) internal successors, (380), 11 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:55,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:55,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-24 21:52:55,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:57,230 INFO L124 PetriNetUnfolderBase]: 4675/9872 cut-off events. [2023-11-24 21:52:57,230 INFO L125 PetriNetUnfolderBase]: For 10731/11077 co-relation queries the response was YES. [2023-11-24 21:52:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25542 conditions, 9872 events. 4675/9872 cut-off events. For 10731/11077 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 102539 event pairs, 3199 based on Foata normal form. 197/9363 useless extension candidates. Maximal degree in co-relation 25515. Up to 2719 conditions per place. [2023-11-24 21:52:57,340 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 84 selfloop transitions, 18 changer transitions 1/144 dead transitions. [2023-11-24 21:52:57,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 144 transitions, 1002 flow [2023-11-24 21:52:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:52:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:52:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 397 transitions. [2023-11-24 21:52:57,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403225806451613 [2023-11-24 21:52:57,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 397 transitions. [2023-11-24 21:52:57,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 397 transitions. [2023-11-24 21:52:57,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:57,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 397 transitions. [2023-11-24 21:52:57,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,350 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,350 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 445 flow. Second operand 10 states and 397 transitions. [2023-11-24 21:52:57,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 144 transitions, 1002 flow [2023-11-24 21:52:57,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 994 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-24 21:52:57,521 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 666 flow [2023-11-24 21:52:57,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=666, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2023-11-24 21:52:57,522 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-11-24 21:52:57,522 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 666 flow [2023-11-24 21:52:57,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.54545454545455) internal successors, (380), 11 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:57,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:57,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:52:57,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:52:57,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2111418681, now seen corresponding path program 1 times [2023-11-24 21:52:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601576850] [2023-11-24 21:52:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601576850] [2023-11-24 21:52:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601576850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:57,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889471076] [2023-11-24 21:52:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:57,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:57,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:57,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 62 [2023-11-24 21:52:57,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 666 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:57,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:57,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 62 [2023-11-24 21:52:57,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:00,137 INFO L124 PetriNetUnfolderBase]: 6054/11355 cut-off events. [2023-11-24 21:53:00,137 INFO L125 PetriNetUnfolderBase]: For 12051/12243 co-relation queries the response was YES. [2023-11-24 21:53:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 11355 events. 6054/11355 cut-off events. For 12051/12243 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 113367 event pairs, 1920 based on Foata normal form. 116/10811 useless extension candidates. Maximal degree in co-relation 30074. Up to 4918 conditions per place. [2023-11-24 21:53:00,267 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 42 selfloop transitions, 23 changer transitions 43/148 dead transitions. [2023-11-24 21:53:00,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 1146 flow [2023-11-24 21:53:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:53:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:53:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 358 transitions. [2023-11-24 21:53:00,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217741935483871 [2023-11-24 21:53:00,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 358 transitions. [2023-11-24 21:53:00,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 358 transitions. [2023-11-24 21:53:00,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:00,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 358 transitions. [2023-11-24 21:53:00,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.75) internal successors, (358), 8 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,275 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,275 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 666 flow. Second operand 8 states and 358 transitions. [2023-11-24 21:53:00,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 1146 flow [2023-11-24 21:53:00,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 148 transitions, 1108 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-24 21:53:00,541 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 724 flow [2023-11-24 21:53:00,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2023-11-24 21:53:00,542 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 46 predicate places. [2023-11-24 21:53:00,542 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 724 flow [2023-11-24 21:53:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:00,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:00,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:53:00,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:00,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1848597805, now seen corresponding path program 1 times [2023-11-24 21:53:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977160216] [2023-11-24 21:53:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977160216] [2023-11-24 21:53:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977160216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:01,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676228172] [2023-11-24 21:53:01,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:01,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:53:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:53:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:53:01,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:01,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 37.75) internal successors, (302), 8 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:01,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:01,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:01,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:02,888 INFO L124 PetriNetUnfolderBase]: 2769/6528 cut-off events. [2023-11-24 21:53:02,888 INFO L125 PetriNetUnfolderBase]: For 13339/13537 co-relation queries the response was YES. [2023-11-24 21:53:02,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18796 conditions, 6528 events. 2769/6528 cut-off events. For 13339/13537 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 68462 event pairs, 1261 based on Foata normal form. 136/6193 useless extension candidates. Maximal degree in co-relation 18756. Up to 3278 conditions per place. [2023-11-24 21:53:02,963 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 27 selfloop transitions, 25 changer transitions 3/104 dead transitions. [2023-11-24 21:53:02,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 104 transitions, 850 flow [2023-11-24 21:53:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:53:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:53:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2023-11-24 21:53:02,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474654377880185 [2023-11-24 21:53:02,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2023-11-24 21:53:02,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2023-11-24 21:53:02,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:02,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2023-11-24 21:53:02,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:02,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:02,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:02,970 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 724 flow. Second operand 7 states and 281 transitions. [2023-11-24 21:53:02,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 104 transitions, 850 flow [2023-11-24 21:53:03,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 741 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-11-24 21:53:03,183 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 661 flow [2023-11-24 21:53:03,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2023-11-24 21:53:03,184 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2023-11-24 21:53:03,184 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 661 flow [2023-11-24 21:53:03,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.75) internal successors, (302), 8 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:03,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:03,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:03,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:53:03,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:03,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:03,186 INFO L85 PathProgramCache]: Analyzing trace with hash -346362198, now seen corresponding path program 1 times [2023-11-24 21:53:03,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006580469] [2023-11-24 21:53:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:03,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:03,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:03,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006580469] [2023-11-24 21:53:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006580469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:03,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:03,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:03,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693082238] [2023-11-24 21:53:03,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:53:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:53:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:03,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-24 21:53:03,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 661 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:03,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:03,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-24 21:53:03,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:09,159 INFO L124 PetriNetUnfolderBase]: 24852/41438 cut-off events. [2023-11-24 21:53:09,159 INFO L125 PetriNetUnfolderBase]: For 64759/64787 co-relation queries the response was YES. [2023-11-24 21:53:09,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119258 conditions, 41438 events. 24852/41438 cut-off events. For 64759/64787 co-relation queries the response was YES. Maximal size of possible extension queue 3034. Compared 400351 event pairs, 2781 based on Foata normal form. 280/41406 useless extension candidates. Maximal degree in co-relation 119224. Up to 9208 conditions per place. [2023-11-24 21:53:09,401 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 51 selfloop transitions, 11 changer transitions 221/303 dead transitions. [2023-11-24 21:53:09,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 303 transitions, 2555 flow [2023-11-24 21:53:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:53:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-24 21:53:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 655 transitions. [2023-11-24 21:53:09,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7043010752688172 [2023-11-24 21:53:09,405 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 655 transitions. [2023-11-24 21:53:09,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 655 transitions. [2023-11-24 21:53:09,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:09,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 655 transitions. [2023-11-24 21:53:09,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.666666666666664) internal successors, (655), 15 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:09,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:09,413 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:09,413 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 661 flow. Second operand 15 states and 655 transitions. [2023-11-24 21:53:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 303 transitions, 2555 flow [2023-11-24 21:53:10,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 303 transitions, 2499 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 21:53:10,540 INFO L231 Difference]: Finished difference. Result has 127 places, 54 transitions, 306 flow [2023-11-24 21:53:10,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=306, PETRI_PLACES=127, PETRI_TRANSITIONS=54} [2023-11-24 21:53:10,542 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 59 predicate places. [2023-11-24 21:53:10,542 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 54 transitions, 306 flow [2023-11-24 21:53:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:10,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:10,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:53:10,543 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:10,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 867130155, now seen corresponding path program 1 times [2023-11-24 21:53:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672035458] [2023-11-24 21:53:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672035458] [2023-11-24 21:53:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672035458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:10,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:10,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065643055] [2023-11-24 21:53:10,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:10,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:10,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 54 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:10,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:10,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:10,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:12,495 INFO L124 PetriNetUnfolderBase]: 4557/8772 cut-off events. [2023-11-24 21:53:12,495 INFO L125 PetriNetUnfolderBase]: For 33289/33403 co-relation queries the response was YES. [2023-11-24 21:53:12,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26806 conditions, 8772 events. 4557/8772 cut-off events. For 33289/33403 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 80285 event pairs, 1328 based on Foata normal form. 228/8717 useless extension candidates. Maximal degree in co-relation 26772. Up to 2062 conditions per place. [2023-11-24 21:53:12,608 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 32 selfloop transitions, 3 changer transitions 48/110 dead transitions. [2023-11-24 21:53:12,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 710 flow [2023-11-24 21:53:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:53:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:53:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 478 transitions. [2023-11-24 21:53:12,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008797653958945 [2023-11-24 21:53:12,613 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 478 transitions. [2023-11-24 21:53:12,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 478 transitions. [2023-11-24 21:53:12,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:12,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 478 transitions. [2023-11-24 21:53:12,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.45454545454545) internal successors, (478), 11 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:12,620 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:12,620 INFO L175 Difference]: Start difference. First operand has 127 places, 54 transitions, 306 flow. Second operand 11 states and 478 transitions. [2023-11-24 21:53:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 710 flow [2023-11-24 21:53:13,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 559 flow, removed 55 selfloop flow, removed 23 redundant places. [2023-11-24 21:53:13,026 INFO L231 Difference]: Finished difference. Result has 94 places, 52 transitions, 234 flow [2023-11-24 21:53:13,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=234, PETRI_PLACES=94, PETRI_TRANSITIONS=52} [2023-11-24 21:53:13,027 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 26 predicate places. [2023-11-24 21:53:13,027 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 52 transitions, 234 flow [2023-11-24 21:53:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:13,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:13,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:53:13,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:13,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash 108040575, now seen corresponding path program 1 times [2023-11-24 21:53:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:13,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158092322] [2023-11-24 21:53:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:13,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158092322] [2023-11-24 21:53:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158092322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:13,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:13,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:13,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28350581] [2023-11-24 21:53:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:13,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:13,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:13,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:13,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:13,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 52 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:13,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:13,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:15,995 INFO L124 PetriNetUnfolderBase]: 13723/22768 cut-off events. [2023-11-24 21:53:15,995 INFO L125 PetriNetUnfolderBase]: For 25393/25664 co-relation queries the response was YES. [2023-11-24 21:53:16,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53810 conditions, 22768 events. 13723/22768 cut-off events. For 25393/25664 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 197253 event pairs, 4226 based on Foata normal form. 843/22662 useless extension candidates. Maximal degree in co-relation 53785. Up to 12139 conditions per place. [2023-11-24 21:53:16,165 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 36 selfloop transitions, 6 changer transitions 1/71 dead transitions. [2023-11-24 21:53:16,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 71 transitions, 375 flow [2023-11-24 21:53:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:53:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2023-11-24 21:53:16,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7459677419354839 [2023-11-24 21:53:16,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 185 transitions. [2023-11-24 21:53:16,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 185 transitions. [2023-11-24 21:53:16,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:16,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 185 transitions. [2023-11-24 21:53:16,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:16,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:16,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:16,171 INFO L175 Difference]: Start difference. First operand has 94 places, 52 transitions, 234 flow. Second operand 4 states and 185 transitions. [2023-11-24 21:53:16,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 71 transitions, 375 flow [2023-11-24 21:53:16,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 353 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-11-24 21:53:16,549 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 254 flow [2023-11-24 21:53:16,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2023-11-24 21:53:16,550 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2023-11-24 21:53:16,550 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 254 flow [2023-11-24 21:53:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:16,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:16,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:16,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:53:16,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:16,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash -481199690, now seen corresponding path program 1 times [2023-11-24 21:53:16,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399578290] [2023-11-24 21:53:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:16,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:16,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399578290] [2023-11-24 21:53:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399578290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626860701] [2023-11-24 21:53:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:16,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:16,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:16,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:16,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:16,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:16,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:18,811 INFO L124 PetriNetUnfolderBase]: 11593/19239 cut-off events. [2023-11-24 21:53:18,812 INFO L125 PetriNetUnfolderBase]: For 11334/14403 co-relation queries the response was YES. [2023-11-24 21:53:18,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48950 conditions, 19239 events. 11593/19239 cut-off events. For 11334/14403 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 158739 event pairs, 2012 based on Foata normal form. 861/19417 useless extension candidates. Maximal degree in co-relation 48931. Up to 9409 conditions per place. [2023-11-24 21:53:18,943 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 43 selfloop transitions, 10 changer transitions 1/82 dead transitions. [2023-11-24 21:53:18,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 456 flow [2023-11-24 21:53:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:53:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2023-11-24 21:53:18,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7483870967741936 [2023-11-24 21:53:18,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 232 transitions. [2023-11-24 21:53:18,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 232 transitions. [2023-11-24 21:53:18,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:18,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 232 transitions. [2023-11-24 21:53:18,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:18,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-24 21:53:18,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-24 21:53:18,951 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 254 flow. Second operand 5 states and 232 transitions. [2023-11-24 21:53:18,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 456 flow [2023-11-24 21:53:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 445 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:18,966 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 306 flow [2023-11-24 21:53:18,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2023-11-24 21:53:18,967 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2023-11-24 21:53:18,967 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 306 flow [2023-11-24 21:53:18,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:18,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:18,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:53:18,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:18,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 904900377, now seen corresponding path program 1 times [2023-11-24 21:53:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413567918] [2023-11-24 21:53:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413567918] [2023-11-24 21:53:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413567918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204291651] [2023-11-24 21:53:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:19,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:19,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:19,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:19,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:19,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:20,852 INFO L124 PetriNetUnfolderBase]: 7987/12979 cut-off events. [2023-11-24 21:53:20,852 INFO L125 PetriNetUnfolderBase]: For 15110/20018 co-relation queries the response was YES. [2023-11-24 21:53:20,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37304 conditions, 12979 events. 7987/12979 cut-off events. For 15110/20018 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 95335 event pairs, 522 based on Foata normal form. 814/13415 useless extension candidates. Maximal degree in co-relation 37284. Up to 4992 conditions per place. [2023-11-24 21:53:20,925 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 48 selfloop transitions, 14 changer transitions 1/91 dead transitions. [2023-11-24 21:53:20,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 553 flow [2023-11-24 21:53:20,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:53:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2023-11-24 21:53:20,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446236559139785 [2023-11-24 21:53:20,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 277 transitions. [2023-11-24 21:53:20,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 277 transitions. [2023-11-24 21:53:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 277 transitions. [2023-11-24 21:53:20,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:20,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:20,932 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:20,932 INFO L175 Difference]: Start difference. First operand has 85 places, 60 transitions, 306 flow. Second operand 6 states and 277 transitions. [2023-11-24 21:53:20,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 553 flow [2023-11-24 21:53:20,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 523 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-24 21:53:20,957 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 356 flow [2023-11-24 21:53:20,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2023-11-24 21:53:20,958 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 20 predicate places. [2023-11-24 21:53:20,959 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 356 flow [2023-11-24 21:53:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:20,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:20,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:53:20,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:20,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1947492999, now seen corresponding path program 1 times [2023-11-24 21:53:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573134017] [2023-11-24 21:53:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:20,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573134017] [2023-11-24 21:53:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573134017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:21,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:21,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962046023] [2023-11-24 21:53:21,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:21,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:53:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:53:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:21,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-24 21:53:21,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:21,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:21,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-24 21:53:21,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:22,287 INFO L124 PetriNetUnfolderBase]: 5035/7783 cut-off events. [2023-11-24 21:53:22,287 INFO L125 PetriNetUnfolderBase]: For 16351/21550 co-relation queries the response was YES. [2023-11-24 21:53:22,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25209 conditions, 7783 events. 5035/7783 cut-off events. For 16351/21550 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 48313 event pairs, 156 based on Foata normal form. 625/8138 useless extension candidates. Maximal degree in co-relation 25188. Up to 2964 conditions per place. [2023-11-24 21:53:22,321 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 45 selfloop transitions, 18 changer transitions 1/92 dead transitions. [2023-11-24 21:53:22,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 567 flow [2023-11-24 21:53:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:53:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:53:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2023-11-24 21:53:22,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7235023041474654 [2023-11-24 21:53:22,323 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 314 transitions. [2023-11-24 21:53:22,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 314 transitions. [2023-11-24 21:53:22,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:22,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 314 transitions. [2023-11-24 21:53:22,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.857142857142854) internal successors, (314), 7 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:22,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:22,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:22,327 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 356 flow. Second operand 7 states and 314 transitions. [2023-11-24 21:53:22,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 567 flow [2023-11-24 21:53:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 500 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-11-24 21:53:22,400 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 345 flow [2023-11-24 21:53:22,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2023-11-24 21:53:22,401 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2023-11-24 21:53:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 345 flow [2023-11-24 21:53:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:22,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 21:53:22,402 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-24 21:53:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 530955150, now seen corresponding path program 1 times [2023-11-24 21:53:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467892912] [2023-11-24 21:53:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:22,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:22,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467892912] [2023-11-24 21:53:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467892912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:22,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500620787] [2023-11-24 21:53:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:22,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 62 [2023-11-24 21:53:22,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:22,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:22,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 62 [2023-11-24 21:53:22,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:23,223 INFO L124 PetriNetUnfolderBase]: 2611/4965 cut-off events. [2023-11-24 21:53:23,223 INFO L125 PetriNetUnfolderBase]: For 6299/6672 co-relation queries the response was YES. [2023-11-24 21:53:23,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 4965 events. 2611/4965 cut-off events. For 6299/6672 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 39200 event pairs, 537 based on Foata normal form. 58/4453 useless extension candidates. Maximal degree in co-relation 13848. Up to 2259 conditions per place. [2023-11-24 21:53:23,257 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-11-24 21:53:23,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 483 flow [2023-11-24 21:53:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:53:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-24 21:53:23,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.706989247311828 [2023-11-24 21:53:23,259 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-24 21:53:23,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-24 21:53:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:23,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-24 21:53:23,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:23,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:23,262 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:23,262 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 345 flow. Second operand 6 states and 263 transitions. [2023-11-24 21:53:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 483 flow [2023-11-24 21:53:23,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 377 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-24 21:53:23,329 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2023-11-24 21:53:23,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2023-11-24 21:53:23,330 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2023-11-24 21:53:23,330 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2023-11-24 21:53:23,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:23,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-11-24 21:53:23,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-11-24 21:53:23,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-11-24 21:53:23,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-11-24 21:53:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-11-24 21:53:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-11-24 21:53:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-11-24 21:53:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-11-24 21:53:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-11-24 21:53:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-11-24 21:53:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-11-24 21:53:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-11-24 21:53:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-11-24 21:53:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-11-24 21:53:23,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 21:53:23,338 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:23,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:53:23,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:53:23,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:53:23 BasicIcfg [2023-11-24 21:53:23,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:53:23,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:53:23,349 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:53:23,349 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:53:23,349 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:46" (3/4) ... [2023-11-24 21:53:23,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:53:23,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:53:23,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:53:23,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:53:23,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-24 21:53:23,361 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2023-11-24 21:53:23,361 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 21:53:23,362 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:53:23,362 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:53:23,455 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:53:23,455 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:53:23,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:53:23,456 INFO L158 Benchmark]: Toolchain (without parser) took 38618.42ms. Allocated memory was 172.0MB in the beginning and 11.2GB in the end (delta: 11.1GB). Free memory was 124.5MB in the beginning and 9.8GB in the end (delta: -9.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-24 21:53:23,457 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:23,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.87ms. Allocated memory is still 172.0MB. Free memory was 124.5MB in the beginning and 104.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:53:23,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.37ms. Allocated memory is still 172.0MB. Free memory was 103.5MB in the beginning and 101.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:23,458 INFO L158 Benchmark]: Boogie Preprocessor took 97.58ms. Allocated memory is still 172.0MB. Free memory was 101.9MB in the beginning and 99.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:23,459 INFO L158 Benchmark]: RCFGBuilder took 642.76ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 74.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:23,459 INFO L158 Benchmark]: TraceAbstraction took 37043.38ms. Allocated memory was 172.0MB in the beginning and 11.2GB in the end (delta: 11.1GB). Free memory was 73.5MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-24 21:53:23,460 INFO L158 Benchmark]: Witness Printer took 107.43ms. Allocated memory is still 11.2GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:23,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.87ms. Allocated memory is still 172.0MB. Free memory was 124.5MB in the beginning and 104.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.37ms. Allocated memory is still 172.0MB. Free memory was 103.5MB in the beginning and 101.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.58ms. Allocated memory is still 172.0MB. Free memory was 101.9MB in the beginning and 99.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 642.76ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 74.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 37043.38ms. Allocated memory was 172.0MB in the beginning and 11.2GB in the end (delta: 11.1GB). Free memory was 73.5MB in the beginning and 9.8GB in the end (delta: -9.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 107.43ms. Allocated memory is still 11.2GB. Free memory was 9.8GB in the beginning and 9.8GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 786]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 91 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.9s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1276 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1058 mSDsluCounter, 350 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 295 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3469 IncrementalHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 55 mSDtfsCounter, 3469 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=13, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 3233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:53:23,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e64653a0-e1eb-4145-b90a-9256ebdd5827/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE