./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:21,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:21,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:52:21,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:21,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:21,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:21,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:21,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:21,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:21,998 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:21,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:22,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:22,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:22,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:22,003 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:22,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:22,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:52:22,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:22,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:52:22,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:22,006 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:52:22,007 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:52:22,007 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:52:22,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:22,008 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:52:22,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:52:22,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:52:22,009 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:22,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:22,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:22,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:22,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:22,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:22,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:22,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:22,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:22,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:22,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:22,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:22,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:22,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:22,015 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_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2023-11-26 11:52:22,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:22,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:22,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:22,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:22,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:22,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-26 11:52:25,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:25,971 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:25,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-26 11:52:25,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/data/b1e7bc541/95dd1bb39747477b89061bac2dfdb2ec/FLAG495ef5412 [2023-11-26 11:52:26,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/data/b1e7bc541/95dd1bb39747477b89061bac2dfdb2ec [2023-11-26 11:52:26,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:26,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:26,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:26,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:26,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:26,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525caa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26, skipping insertion in model container [2023-11-26 11:52:26,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:26,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:26,573 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:26,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:26,693 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:26,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26 WrapperNode [2023-11-26 11:52:26,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:26,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:26,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:26,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:26,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,760 INFO L138 Inliner]: procedures = 163, calls = 27, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 93 [2023-11-26 11:52:26,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:26,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:26,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:26,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:26,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,839 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-26 11:52:26,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:26,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:26,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:26,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:26,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (1/1) ... [2023-11-26 11:52:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:26,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:26,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:52:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:52:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:52:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:52:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:52:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:52:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:52:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:52:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:52:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:26,955 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:52:27,121 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:27,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:27,369 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:27,540 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:27,540 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:52:27,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:27 BoogieIcfgContainer [2023-11-26 11:52:27,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:27,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:27,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:27,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:27,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:26" (1/3) ... [2023-11-26 11:52:27,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:27, skipping insertion in model container [2023-11-26 11:52:27,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:26" (2/3) ... [2023-11-26 11:52:27,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:27, skipping insertion in model container [2023-11-26 11:52:27,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:27" (3/3) ... [2023-11-26 11:52:27,551 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2023-11-26 11:52:27,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:27,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-26 11:52:27,572 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:52:27,627 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:52:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 55 transitions, 117 flow [2023-11-26 11:52:27,697 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2023-11-26 11:52:27,697 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:52:27,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 8/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-26 11:52:27,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 55 transitions, 117 flow [2023-11-26 11:52:27,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 53 transitions, 112 flow [2023-11-26 11:52:27,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:27,729 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;@5f9c87fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:27,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 11:52:27,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:52:27,745 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-11-26 11:52:27,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:27,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:27,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:52:27,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:27,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 9894922, now seen corresponding path program 1 times [2023-11-26 11:52:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635290437] [2023-11-26 11:52:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635290437] [2023-11-26 11:52:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635290437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:28,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:52:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553075718] [2023-11-26 11:52:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:28,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2023-11-26 11:52:28,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:28,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2023-11-26 11:52:28,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:28,532 INFO L124 PetriNetUnfolderBase]: 63/221 cut-off events. [2023-11-26 11:52:28,532 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:52:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 221 events. 63/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1049 event pairs, 63 based on Foata normal form. 53/269 useless extension candidates. Maximal degree in co-relation 351. Up to 148 conditions per place. [2023-11-26 11:52:28,539 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 21 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-26 11:52:28,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 130 flow [2023-11-26 11:52:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-26 11:52:28,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2023-11-26 11:52:28,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-26 11:52:28,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-26 11:52:28,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:28,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-26 11:52:28,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,569 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 112 flow. Second operand 3 states and 84 transitions. [2023-11-26 11:52:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 130 flow [2023-11-26 11:52:28,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:28,579 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 84 flow [2023-11-26 11:52:28,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-26 11:52:28,588 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-11-26 11:52:28,588 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 84 flow [2023-11-26 11:52:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:28,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:52:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:52:28,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:28,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 9894923, now seen corresponding path program 1 times [2023-11-26 11:52:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:28,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772562498] [2023-11-26 11:52:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772562498] [2023-11-26 11:52:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772562498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:52:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020522819] [2023-11-26 11:52:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:28,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:28,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:28,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:28,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:28,808 INFO L124 PetriNetUnfolderBase]: 54/199 cut-off events. [2023-11-26 11:52:28,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 199 events. 54/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 929 event pairs, 54 based on Foata normal form. 10/205 useless extension candidates. Maximal degree in co-relation 324. Up to 128 conditions per place. [2023-11-26 11:52:28,810 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 19 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-26 11:52:28,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 122 flow [2023-11-26 11:52:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-26 11:52:28,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-11-26 11:52:28,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-26 11:52:28,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-26 11:52:28,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:28,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-26 11:52:28,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,816 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 84 flow. Second operand 3 states and 80 transitions. [2023-11-26 11:52:28,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 122 flow [2023-11-26 11:52:28,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:28,820 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 80 flow [2023-11-26 11:52:28,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-26 11:52:28,824 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-11-26 11:52:28,825 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 80 flow [2023-11-26 11:52:28,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:28,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:52:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:52:28,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:28,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash 9894629, now seen corresponding path program 1 times [2023-11-26 11:52:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775349334] [2023-11-26 11:52:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775349334] [2023-11-26 11:52:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775349334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:28,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743192548] [2023-11-26 11:52:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:28,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:28,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:28,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:28,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,043 INFO L124 PetriNetUnfolderBase]: 63/210 cut-off events. [2023-11-26 11:52:29,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:29,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 210 events. 63/210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 982 event pairs, 54 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 354. Up to 128 conditions per place. [2023-11-26 11:52:29,048 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-26 11:52:29,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 154 flow [2023-11-26 11:52:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2023-11-26 11:52:29,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2023-11-26 11:52:29,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 89 transitions. [2023-11-26 11:52:29,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 89 transitions. [2023-11-26 11:52:29,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 89 transitions. [2023-11-26 11:52:29,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,061 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 80 flow. Second operand 3 states and 89 transitions. [2023-11-26 11:52:29,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 154 flow [2023-11-26 11:52:29,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:29,064 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2023-11-26 11:52:29,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-11-26 11:52:29,066 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-11-26 11:52:29,066 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2023-11-26 11:52:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:52:29,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:29,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash 54327333, now seen corresponding path program 1 times [2023-11-26 11:52:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922369920] [2023-11-26 11:52:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:29,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:29,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922369920] [2023-11-26 11:52:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922369920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:29,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572051171] [2023-11-26 11:52:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:29,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:29,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:29,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,348 INFO L124 PetriNetUnfolderBase]: 62/197 cut-off events. [2023-11-26 11:52:29,349 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-26 11:52:29,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 197 events. 62/197 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 852 event pairs, 25 based on Foata normal form. 10/207 useless extension candidates. Maximal degree in co-relation 191. Up to 84 conditions per place. [2023-11-26 11:52:29,351 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 34 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-11-26 11:52:29,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 196 flow [2023-11-26 11:52:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-26 11:52:29,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49454545454545457 [2023-11-26 11:52:29,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-26 11:52:29,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-26 11:52:29,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-26 11:52:29,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,356 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,357 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 78 flow. Second operand 5 states and 136 transitions. [2023-11-26 11:52:29,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 196 flow [2023-11-26 11:52:29,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:29,360 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 106 flow [2023-11-26 11:52:29,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-26 11:52:29,361 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-11-26 11:52:29,361 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 106 flow [2023-11-26 11:52:29,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:52:29,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1505587644, now seen corresponding path program 1 times [2023-11-26 11:52:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061827153] [2023-11-26 11:52:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:29,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061827153] [2023-11-26 11:52:29,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061827153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:29,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:29,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:29,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86576830] [2023-11-26 11:52:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:29,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:29,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:29,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:29,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:29,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,616 INFO L124 PetriNetUnfolderBase]: 57/166 cut-off events. [2023-11-26 11:52:29,617 INFO L125 PetriNetUnfolderBase]: For 60/68 co-relation queries the response was YES. [2023-11-26 11:52:29,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 166 events. 57/166 cut-off events. For 60/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 638 event pairs, 16 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 135. Up to 73 conditions per place. [2023-11-26 11:52:29,622 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 32 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-11-26 11:52:29,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 222 flow [2023-11-26 11:52:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2023-11-26 11:52:29,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49818181818181817 [2023-11-26 11:52:29,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 137 transitions. [2023-11-26 11:52:29,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 137 transitions. [2023-11-26 11:52:29,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 137 transitions. [2023-11-26 11:52:29,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,631 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,631 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 106 flow. Second operand 5 states and 137 transitions. [2023-11-26 11:52:29,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 222 flow [2023-11-26 11:52:29,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:29,638 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 140 flow [2023-11-26 11:52:29,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-26 11:52:29,641 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2023-11-26 11:52:29,641 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 140 flow [2023-11-26 11:52:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:52:29,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:29,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 901827944, now seen corresponding path program 1 times [2023-11-26 11:52:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626783408] [2023-11-26 11:52:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626783408] [2023-11-26 11:52:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626783408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:29,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:29,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252087839] [2023-11-26 11:52:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:29,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:29,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-26 11:52:29,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:29,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-26 11:52:29,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,824 INFO L124 PetriNetUnfolderBase]: 17/83 cut-off events. [2023-11-26 11:52:29,824 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-26 11:52:29,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 83 events. 17/83 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 196 event pairs, 4 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 99. Up to 38 conditions per place. [2023-11-26 11:52:29,825 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 21 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-26 11:52:29,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 187 flow [2023-11-26 11:52:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-26 11:52:29,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-26 11:52:29,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-26 11:52:29,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-26 11:52:29,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-26 11:52:29,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,831 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 140 flow. Second operand 3 states and 87 transitions. [2023-11-26 11:52:29,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 187 flow [2023-11-26 11:52:29,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 179 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:29,837 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 131 flow [2023-11-26 11:52:29,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-26 11:52:29,840 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2023-11-26 11:52:29,841 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 131 flow [2023-11-26 11:52:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:52:29,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2007091850, now seen corresponding path program 1 times [2023-11-26 11:52:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532099118] [2023-11-26 11:52:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532099118] [2023-11-26 11:52:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532099118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:30,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:30,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:30,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138570409] [2023-11-26 11:52:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:30,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:30,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:30,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:30,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:30,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:30,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:30,189 INFO L124 PetriNetUnfolderBase]: 19/82 cut-off events. [2023-11-26 11:52:30,189 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-26 11:52:30,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 82 events. 19/82 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 9 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 111. Up to 29 conditions per place. [2023-11-26 11:52:30,190 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 23 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2023-11-26 11:52:30,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 206 flow [2023-11-26 11:52:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:52:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2023-11-26 11:52:30,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-11-26 11:52:30,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 143 transitions. [2023-11-26 11:52:30,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 143 transitions. [2023-11-26 11:52:30,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:30,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 143 transitions. [2023-11-26 11:52:30,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,196 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 131 flow. Second operand 6 states and 143 transitions. [2023-11-26 11:52:30,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 206 flow [2023-11-26 11:52:30,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:30,200 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 142 flow [2023-11-26 11:52:30,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-11-26 11:52:30,201 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-26 11:52:30,201 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 142 flow [2023-11-26 11:52:30,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:30,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:52:30,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:30,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 894964125, now seen corresponding path program 1 times [2023-11-26 11:52:30,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:30,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187408524] [2023-11-26 11:52:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:30,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:30,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187408524] [2023-11-26 11:52:30,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187408524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:30,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:30,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:30,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816616313] [2023-11-26 11:52:30,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:30,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:30,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-26 11:52:30,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:30,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-26 11:52:30,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:30,519 INFO L124 PetriNetUnfolderBase]: 17/83 cut-off events. [2023-11-26 11:52:30,519 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-26 11:52:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 83 events. 17/83 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 4 based on Foata normal form. 2/85 useless extension candidates. Maximal degree in co-relation 111. Up to 15 conditions per place. [2023-11-26 11:52:30,520 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 29 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2023-11-26 11:52:30,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 247 flow [2023-11-26 11:52:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:52:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2023-11-26 11:52:30,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2023-11-26 11:52:30,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 191 transitions. [2023-11-26 11:52:30,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 191 transitions. [2023-11-26 11:52:30,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:30,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 191 transitions. [2023-11-26 11:52:30,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 55.0) internal successors, (495), 9 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,526 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 55.0) internal successors, (495), 9 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,526 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 142 flow. Second operand 8 states and 191 transitions. [2023-11-26 11:52:30,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 247 flow [2023-11-26 11:52:30,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:52:30,529 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 143 flow [2023-11-26 11:52:30,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-11-26 11:52:30,530 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-26 11:52:30,531 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 143 flow [2023-11-26 11:52:30,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:30,531 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] [2023-11-26 11:52:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:52:30,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2023-11-26 11:52:30,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1351084777, now seen corresponding path program 1 times [2023-11-26 11:52:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769161046] [2023-11-26 11:52:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769161046] [2023-11-26 11:52:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769161046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:30,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270479268] [2023-11-26 11:52:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:30,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:30,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2023-11-26 11:52:30,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:30,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2023-11-26 11:52:30,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:30,825 INFO L124 PetriNetUnfolderBase]: 15/79 cut-off events. [2023-11-26 11:52:30,826 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-26 11:52:30,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 79 events. 15/79 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 15 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 111. Up to 57 conditions per place. [2023-11-26 11:52:30,826 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-11-26 11:52:30,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 185 flow [2023-11-26 11:52:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:52:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2023-11-26 11:52:30,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-11-26 11:52:30,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2023-11-26 11:52:30,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2023-11-26 11:52:30,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:30,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2023-11-26 11:52:30,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,831 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 143 flow. Second operand 4 states and 98 transitions. [2023-11-26 11:52:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 185 flow [2023-11-26 11:52:30,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 169 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-26 11:52:30,835 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-11-26 11:52:30,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-11-26 11:52:30,837 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-11-26 11:52:30,837 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-11-26 11:52:30,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-26 11:52:30,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-26 11:52:30,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 12 remaining) [2023-11-26 11:52:30,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (8 of 12 remaining) [2023-11-26 11:52:30,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-26 11:52:30,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-26 11:52:30,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2023-11-26 11:52:30,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-11-26 11:52:30,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-26 11:52:30,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-26 11:52:30,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-11-26 11:52:30,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2023-11-26 11:52:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:52:30,850 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:30,857 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:52:30,857 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:52:30,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:52:30 BasicIcfg [2023-11-26 11:52:30,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:52:30,867 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:52:30,867 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:52:30,867 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:52:30,868 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:27" (3/4) ... [2023-11-26 11:52:30,870 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:52:30,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 11:52:30,881 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-26 11:52:30,882 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 11:52:30,882 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 11:52:30,882 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:52:30,985 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:52:30,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:52:30,986 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:52:30,987 INFO L158 Benchmark]: Toolchain (without parser) took 4979.47ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 120.4MB in the beginning and 149.6MB in the end (delta: -29.2MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,987 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:30,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.50ms. Allocated memory is still 161.5MB. Free memory was 120.4MB in the beginning and 101.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.77ms. Allocated memory is still 161.5MB. Free memory was 101.1MB in the beginning and 133.8MB in the end (delta: -32.7MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,988 INFO L158 Benchmark]: Boogie Preprocessor took 81.48ms. Allocated memory is still 161.5MB. Free memory was 133.8MB in the beginning and 131.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,989 INFO L158 Benchmark]: RCFGBuilder took 682.72ms. Allocated memory is still 161.5MB. Free memory was 131.3MB in the beginning and 107.6MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,989 INFO L158 Benchmark]: TraceAbstraction took 3323.26ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 106.7MB in the beginning and 153.8MB in the end (delta: -47.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:30,990 INFO L158 Benchmark]: Witness Printer took 118.91ms. Allocated memory is still 195.0MB. Free memory was 153.8MB in the beginning and 149.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:52:30,992 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.50ms. Allocated memory is still 161.5MB. Free memory was 120.4MB in the beginning and 101.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.77ms. Allocated memory is still 161.5MB. Free memory was 101.1MB in the beginning and 133.8MB in the end (delta: -32.7MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.48ms. Allocated memory is still 161.5MB. Free memory was 133.8MB in the beginning and 131.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 682.72ms. Allocated memory is still 161.5MB. Free memory was 131.3MB in the beginning and 107.6MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3323.26ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 106.7MB in the beginning and 153.8MB in the end (delta: -47.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 118.91ms. Allocated memory is still 195.0MB. Free memory was 153.8MB in the beginning and 149.6MB in the end (delta: 4.2MB). 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 697]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: 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 3 procedures, 67 locations, 12 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: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 507 IncrementalHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 6 mSDtfsCounter, 507 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=8, InterpolantAutomatonStates: 40, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:52:31,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6838309b-88ee-4d0c-a22b-f734266f7e48/bin/uautomizer-verify-VRDe98Ueme/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