./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu --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 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:52,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:52,376 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:52,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:52,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:52,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:52,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:52,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:52,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:52,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:52,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:52,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:52,414 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:52,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:52,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:52,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:52,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:52,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:52,418 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:52,418 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:52,419 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:52,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:52,421 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:52,421 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:52,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:52,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:52,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:52,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:52,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:52,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:52,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:52,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:52,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:52,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:52,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:52,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:52,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:52,430 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:52,430 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_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 [2023-11-19 07:45:52,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:52,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:52,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:52,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:52,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:52,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:45:55,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:56,181 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:56,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:45:56,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/9e8198f08/93efb5009fae4b4f92ad7a0bb234f1b0/FLAG90cff8a61 [2023-11-19 07:45:56,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/9e8198f08/93efb5009fae4b4f92ad7a0bb234f1b0 [2023-11-19 07:45:56,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:56,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:56,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:56,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:56,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:56,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7674f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56, skipping insertion in model container [2023-11-19 07:45:56,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,296 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:56,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:56,780 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:56,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:56,887 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:56,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56 WrapperNode [2023-11-19 07:45:56,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:56,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:56,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:56,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:56,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,933 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2023-11-19 07:45:56,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:56,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:56,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:56,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:56,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:56,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:56,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:56,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:56,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (1/1) ... [2023-11-19 07:45:56,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:57,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:57,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:45:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:45:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:45:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:57,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:57,040 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:45:57,165 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:57,168 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:57,350 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:57,358 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:57,359 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:45:57,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:57 BoogieIcfgContainer [2023-11-19 07:45:57,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:57,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:57,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:57,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:57,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:56" (1/3) ... [2023-11-19 07:45:57,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd19615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:57, skipping insertion in model container [2023-11-19 07:45:57,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:56" (2/3) ... [2023-11-19 07:45:57,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd19615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:57, skipping insertion in model container [2023-11-19 07:45:57,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:57" (3/3) ... [2023-11-19 07:45:57,373 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:45:57,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:57,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:45:57,395 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:57,443 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:45:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 150 flow [2023-11-19 07:45:57,557 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2023-11-19 07:45:57,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:57,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-19 07:45:57,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 150 flow [2023-11-19 07:45:57,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 137 flow [2023-11-19 07:45:57,575 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:57,592 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 137 flow [2023-11-19 07:45:57,595 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 137 flow [2023-11-19 07:45:57,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 137 flow [2023-11-19 07:45:57,619 INFO L124 PetriNetUnfolderBase]: 2/67 cut-off events. [2023-11-19 07:45:57,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:57,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-19 07:45:57,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 520 [2023-11-19 07:46:00,611 INFO L134 LiptonReduction]: Checked pairs total: 1202 [2023-11-19 07:46:00,611 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-19 07:46:00,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:00,634 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;@7d63aefe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:00,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:46:00,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:00,636 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:46:00,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:00,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:00,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:46:00,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 266, now seen corresponding path program 1 times [2023-11-19 07:46:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:00,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91186106] [2023-11-19 07:46:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:00,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:00,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91186106] [2023-11-19 07:46:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91186106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:00,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:00,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:46:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449487923] [2023-11-19 07:46:00,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:00,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:00,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-11-19 07:46:00,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:00,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-11-19 07:46:00,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:00,900 INFO L124 PetriNetUnfolderBase]: 15/46 cut-off events. [2023-11-19 07:46:00,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:00,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 46 events. 15/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 114 event pairs, 15 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 82. Up to 41 conditions per place. [2023-11-19 07:46:00,903 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:46:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 47 flow [2023-11-19 07:46:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:46:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2023-11-19 07:46:00,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2023-11-19 07:46:00,944 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2023-11-19 07:46:00,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2023-11-19 07:46:00,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:00,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2023-11-19 07:46:00,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,965 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,967 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 33 flow. Second operand 2 states and 151 transitions. [2023-11-19 07:46:00,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 47 flow [2023-11-19 07:46:00,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:00,972 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 26 flow [2023-11-19 07:46:00,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:46:00,980 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-11-19 07:46:00,980 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 26 flow [2023-11-19 07:46:00,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:00,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:00,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:00,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash -757575862, now seen corresponding path program 1 times [2023-11-19 07:46:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631937080] [2023-11-19 07:46:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631937080] [2023-11-19 07:46:01,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631937080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484929604] [2023-11-19 07:46:01,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:01,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:01,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 144 [2023-11-19 07:46:01,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:01,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 144 [2023-11-19 07:46:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:01,413 INFO L124 PetriNetUnfolderBase]: 16/51 cut-off events. [2023-11-19 07:46:01,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:01,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 51 events. 16/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 9 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 99. Up to 27 conditions per place. [2023-11-19 07:46:01,415 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 13 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2023-11-19 07:46:01,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 68 flow [2023-11-19 07:46:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-19 07:46:01,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2023-11-19 07:46:01,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-19 07:46:01,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-19 07:46:01,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:01,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-19 07:46:01,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,423 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 26 flow. Second operand 3 states and 218 transitions. [2023-11-19 07:46:01,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 17 transitions, 68 flow [2023-11-19 07:46:01,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:01,425 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 44 flow [2023-11-19 07:46:01,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-19 07:46:01,426 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:46:01,426 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 44 flow [2023-11-19 07:46:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:01,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:01,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -757575852, now seen corresponding path program 1 times [2023-11-19 07:46:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28759199] [2023-11-19 07:46:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28759199] [2023-11-19 07:46:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28759199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900918078] [2023-11-19 07:46:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:01,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-11-19 07:46:01,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:01,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-11-19 07:46:01,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:01,726 INFO L124 PetriNetUnfolderBase]: 10/35 cut-off events. [2023-11-19 07:46:01,726 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-11-19 07:46:01,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 35 events. 10/35 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 10 based on Foata normal form. 5/39 useless extension candidates. Maximal degree in co-relation 76. Up to 29 conditions per place. [2023-11-19 07:46:01,727 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 8 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:46:01,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 52 flow [2023-11-19 07:46:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-19 07:46:01,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-11-19 07:46:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-19 07:46:01,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-19 07:46:01,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:01,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-19 07:46:01,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,734 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 44 flow. Second operand 3 states and 202 transitions. [2023-11-19 07:46:01,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 52 flow [2023-11-19 07:46:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:01,736 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 30 flow [2023-11-19 07:46:01,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-11-19 07:46:01,737 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-11-19 07:46:01,737 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 30 flow [2023-11-19 07:46:01,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:01,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:01,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:46:01,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:01,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash 882887666, now seen corresponding path program 1 times [2023-11-19 07:46:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:01,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743295962] [2023-11-19 07:46:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743295962] [2023-11-19 07:46:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743295962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527500068] [2023-11-19 07:46:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:01,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2023-11-19 07:46:01,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:01,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2023-11-19 07:46:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:01,894 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-11-19 07:46:01,895 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:46:01,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 2 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 66. Up to 18 conditions per place. [2023-11-19 07:46:01,895 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 9 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2023-11-19 07:46:01,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 68 flow [2023-11-19 07:46:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-11-19 07:46:01,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2023-11-19 07:46:01,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-11-19 07:46:01,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-11-19 07:46:01,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:01,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-11-19 07:46:01,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,904 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 30 flow. Second operand 3 states and 205 transitions. [2023-11-19 07:46:01,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 68 flow [2023-11-19 07:46:01,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:01,905 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 52 flow [2023-11-19 07:46:01,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-19 07:46:01,908 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:46:01,908 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 52 flow [2023-11-19 07:46:01,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:01,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:01,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:46:01,909 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:01,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1109491466, now seen corresponding path program 2 times [2023-11-19 07:46:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:01,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338115120] [2023-11-19 07:46:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338115120] [2023-11-19 07:46:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338115120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102775026] [2023-11-19 07:46:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:02,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-11-19 07:46:02,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:02,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-11-19 07:46:02,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:02,374 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-11-19 07:46:02,375 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:02,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 25 events. 4/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 76. Up to 15 conditions per place. [2023-11-19 07:46:02,377 INFO L140 encePairwiseOnDemand]: 140/144 looper letters, 10 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2023-11-19 07:46:02,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 96 flow [2023-11-19 07:46:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2023-11-19 07:46:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2023-11-19 07:46:02,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2023-11-19 07:46:02,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2023-11-19 07:46:02,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:02,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2023-11-19 07:46:02,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,390 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,390 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 52 flow. Second operand 4 states and 261 transitions. [2023-11-19 07:46:02,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 96 flow [2023-11-19 07:46:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:02,392 INFO L231 Difference]: Finished difference. Result has 22 places, 13 transitions, 55 flow [2023-11-19 07:46:02,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2023-11-19 07:46:02,395 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-11-19 07:46:02,396 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 55 flow [2023-11-19 07:46:02,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:02,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:02,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:02,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1124905665, now seen corresponding path program 1 times [2023-11-19 07:46:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731884679] [2023-11-19 07:46:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731884679] [2023-11-19 07:46:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731884679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:02,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:02,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719750109] [2023-11-19 07:46:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:02,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:02,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:02,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:02,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-11-19 07:46:02,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:02,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-11-19 07:46:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:02,694 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 07:46:02,695 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:46:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-11-19 07:46:02,695 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 4 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2023-11-19 07:46:02,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 65 flow [2023-11-19 07:46:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-11-19 07:46:02,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2023-11-19 07:46:02,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-11-19 07:46:02,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-11-19 07:46:02,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:02,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-11-19 07:46:02,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,702 INFO L175 Difference]: Start difference. First operand has 22 places, 13 transitions, 55 flow. Second operand 4 states and 266 transitions. [2023-11-19 07:46:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 65 flow [2023-11-19 07:46:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 11 transitions, 55 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:02,703 INFO L231 Difference]: Finished difference. Result has 22 places, 11 transitions, 47 flow [2023-11-19 07:46:02,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=22, PETRI_TRANSITIONS=11} [2023-11-19 07:46:02,704 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-11-19 07:46:02,704 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 11 transitions, 47 flow [2023-11-19 07:46:02,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:02,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:02,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:02,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:02,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash -523656890, now seen corresponding path program 1 times [2023-11-19 07:46:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450205404] [2023-11-19 07:46:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:02,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:02,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:02,772 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:46:02,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-19 07:46:02,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-19 07:46:02,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-19 07:46:02,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-19 07:46:02,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-19 07:46:02,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:02,778 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-19 07:46:02,783 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:46:02,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:46:02,814 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-19 07:46:02,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:46:02 BasicIcfg [2023-11-19 07:46:02,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:46:02,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:46:02,824 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:46:02,824 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:46:02,824 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:57" (3/4) ... [2023-11-19 07:46:02,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:46:02,827 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:46:02,828 INFO L158 Benchmark]: Toolchain (without parser) took 6603.18ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 120.9MB in the beginning and 117.4MB in the end (delta: 3.5MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,828 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:02,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.13ms. Allocated memory is still 165.7MB. Free memory was 120.9MB in the beginning and 101.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.92ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,830 INFO L158 Benchmark]: Boogie Preprocessor took 29.41ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 97.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,834 INFO L158 Benchmark]: RCFGBuilder took 399.37ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 84.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,835 INFO L158 Benchmark]: TraceAbstraction took 5456.29ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 83.8MB in the beginning and 118.5MB in the end (delta: -34.7MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:02,836 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 199.2MB. Free memory was 118.5MB in the beginning and 117.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:02,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.13ms. Allocated memory is still 165.7MB. Free memory was 120.9MB in the beginning and 101.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.92ms. Allocated memory is still 165.7MB. Free memory was 101.8MB in the beginning and 99.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.41ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 97.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.37ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 84.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5456.29ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 83.8MB in the beginning and 118.5MB in the end (delta: -34.7MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 199.2MB. Free memory was 118.5MB in the beginning and 117.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 520 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 1202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 624, independent: 517, independent conditional: 0, independent unconditional: 517, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 313, independent: 292, independent conditional: 0, independent unconditional: 292, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 624, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 313, unknown conditional: 0, unknown unconditional: 313] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, g=0, id={5:0}] [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L690] 1 return ((void *)0); [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] CALL 0 reach_error() [L18] COND FALSE 0 !(0) [L18] 0 __assert_fail ("0", "13-privatized_41-traces-ex-7_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [A={3:0}, D={4:0}, \result={0:0}, arg={0:0}, arg={0:0}, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 84 locations, 5 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: 5.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 20 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, InterpolantAutomatonStates: 19, 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, 1.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:46:02,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu --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 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:05,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:05,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:46:05,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:05,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:05,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:05,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:05,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:05,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:05,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:05,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:05,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:05,784 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:05,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:05,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:05,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:05,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:05,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:05,789 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:46:05,789 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:46:05,790 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:46:05,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:05,792 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:46:05,792 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:46:05,793 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:46:05,793 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:05,794 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:05,795 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:05,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:05,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:05,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:05,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:05,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:05,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:05,799 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:46:05,799 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:46:05,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:05,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:05,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:05,801 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:46:05,802 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:05,802 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_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 [2023-11-19 07:46:06,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:06,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:06,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:06,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:06,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:06,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:46:09,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:09,752 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:09,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/sv-benchmarks/c/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:46:09,773 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/304c7eb57/29a0ee439add4f2895294250cb160f5e/FLAG08981acd5 [2023-11-19 07:46:09,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/data/304c7eb57/29a0ee439add4f2895294250cb160f5e [2023-11-19 07:46:09,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:09,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:09,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:09,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:09,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:09,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:09" (1/1) ... [2023-11-19 07:46:09,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc258bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:09, skipping insertion in model container [2023-11-19 07:46:09,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:09" (1/1) ... [2023-11-19 07:46:09,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:10,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:10,258 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:10,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:10,436 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:10,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10 WrapperNode [2023-11-19 07:46:10,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:10,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:10,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:10,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:10,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,517 INFO L138 Inliner]: procedures = 166, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2023-11-19 07:46:10,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:10,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:10,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:10,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:10,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:10,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:10,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:10,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:10,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (1/1) ... [2023-11-19 07:46:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:10,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:10,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:10,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:46:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:10,642 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:46:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:46:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:46:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:46:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:46:10,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:10,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:10,645 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:46:10,798 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:10,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:11,015 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:11,025 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:11,032 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:46:11,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:11 BoogieIcfgContainer [2023-11-19 07:46:11,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:11,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:11,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:11,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:11,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:09" (1/3) ... [2023-11-19 07:46:11,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba7d0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:11, skipping insertion in model container [2023-11-19 07:46:11,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:10" (2/3) ... [2023-11-19 07:46:11,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba7d0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:11, skipping insertion in model container [2023-11-19 07:46:11,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:11" (3/3) ... [2023-11-19 07:46:11,050 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-11-19 07:46:11,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:11,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:46:11,085 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:11,139 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:46:11,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 152 flow [2023-11-19 07:46:11,223 INFO L124 PetriNetUnfolderBase]: 2/73 cut-off events. [2023-11-19 07:46:11,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:11,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-19 07:46:11,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 152 flow [2023-11-19 07:46:11,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 139 flow [2023-11-19 07:46:11,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:11,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 139 flow [2023-11-19 07:46:11,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 139 flow [2023-11-19 07:46:11,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 139 flow [2023-11-19 07:46:11,275 INFO L124 PetriNetUnfolderBase]: 2/68 cut-off events. [2023-11-19 07:46:11,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-19 07:46:11,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 520 [2023-11-19 07:46:16,910 INFO L134 LiptonReduction]: Checked pairs total: 1200 [2023-11-19 07:46:16,911 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-11-19 07:46:16,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:16,935 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;@457a6a98, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:16,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:46:16,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:16,937 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:46:16,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:16,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:16,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:46:16,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 272, now seen corresponding path program 1 times [2023-11-19 07:46:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809673029] [2023-11-19 07:46:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:16,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:16,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:46:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:46:17,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:17,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:17,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809673029] [2023-11-19 07:46:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809673029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:46:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530550996] [2023-11-19 07:46:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:17,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 148 [2023-11-19 07:46:17,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:17,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 148 [2023-11-19 07:46:17,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:17,197 INFO L124 PetriNetUnfolderBase]: 15/44 cut-off events. [2023-11-19 07:46:17,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 44 events. 15/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 15 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 80. Up to 41 conditions per place. [2023-11-19 07:46:17,200 INFO L140 encePairwiseOnDemand]: 145/148 looper letters, 10 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:46:17,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 47 flow [2023-11-19 07:46:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:46:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 153 transitions. [2023-11-19 07:46:17,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2023-11-19 07:46:17,214 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 153 transitions. [2023-11-19 07:46:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 153 transitions. [2023-11-19 07:46:17,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:17,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 153 transitions. [2023-11-19 07:46:17,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,228 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,230 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 33 flow. Second operand 2 states and 153 transitions. [2023-11-19 07:46:17,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 47 flow [2023-11-19 07:46:17,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:17,235 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 26 flow [2023-11-19 07:46:17,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:46:17,240 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-11-19 07:46:17,241 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 26 flow [2023-11-19 07:46:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:17,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:17,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:17,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:17,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:17,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,445 INFO L85 PathProgramCache]: Analyzing trace with hash -612700243, now seen corresponding path program 1 times [2023-11-19 07:46:17,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:17,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776124737] [2023-11-19 07:46:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:17,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:46:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:17,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:17,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:17,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:17,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776124737] [2023-11-19 07:46:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776124737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:17,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274201603] [2023-11-19 07:46:17,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:17,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:17,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 148 [2023-11-19 07:46:17,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:17,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 148 [2023-11-19 07:46:17,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:17,709 INFO L124 PetriNetUnfolderBase]: 16/51 cut-off events. [2023-11-19 07:46:17,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:17,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 51 events. 16/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 9 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 99. Up to 27 conditions per place. [2023-11-19 07:46:17,711 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 13 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2023-11-19 07:46:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 68 flow [2023-11-19 07:46:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-11-19 07:46:17,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49774774774774777 [2023-11-19 07:46:17,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-11-19 07:46:17,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-11-19 07:46:17,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:17,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-11-19 07:46:17,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,724 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 26 flow. Second operand 3 states and 221 transitions. [2023-11-19 07:46:17,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 17 transitions, 68 flow [2023-11-19 07:46:17,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:17,725 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 44 flow [2023-11-19 07:46:17,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-19 07:46:17,726 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:46:17,727 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 44 flow [2023-11-19 07:46:17,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:17,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:17,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:17,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:17,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:17,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash -612700231, now seen corresponding path program 1 times [2023-11-19 07:46:17,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806832462] [2023-11-19 07:46:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:17,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:17,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:46:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:18,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:18,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:18,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:18,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806832462] [2023-11-19 07:46:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806832462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431628761] [2023-11-19 07:46:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:18,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-11-19 07:46:18,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:18,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-11-19 07:46:18,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:18,260 INFO L124 PetriNetUnfolderBase]: 10/33 cut-off events. [2023-11-19 07:46:18,260 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:46:18,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 33 events. 10/33 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 10 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 72. Up to 29 conditions per place. [2023-11-19 07:46:18,261 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 8 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:46:18,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 52 flow [2023-11-19 07:46:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-11-19 07:46:18,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-11-19 07:46:18,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-11-19 07:46:18,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-11-19 07:46:18,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:18,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-11-19 07:46:18,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,269 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 44 flow. Second operand 3 states and 205 transitions. [2023-11-19 07:46:18,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 52 flow [2023-11-19 07:46:18,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:18,279 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 30 flow [2023-11-19 07:46:18,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-11-19 07:46:18,281 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-11-19 07:46:18,282 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 30 flow [2023-11-19 07:46:18,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:18,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:18,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:18,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:18,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:18,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash 444020791, now seen corresponding path program 1 times [2023-11-19 07:46:18,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726052189] [2023-11-19 07:46:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:18,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:18,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:18,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:46:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:18,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:18,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:18,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 07:46:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:18,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:18,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726052189] [2023-11-19 07:46:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726052189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:18,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:18,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428710720] [2023-11-19 07:46:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:18,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:18,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-11-19 07:46:18,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:18,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-11-19 07:46:18,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:18,713 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-11-19 07:46:18,713 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:46:18,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 2 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 66. Up to 18 conditions per place. [2023-11-19 07:46:18,714 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 9 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2023-11-19 07:46:18,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 68 flow [2023-11-19 07:46:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-19 07:46:18,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2023-11-19 07:46:18,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-19 07:46:18,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-19 07:46:18,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:18,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-19 07:46:18,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,721 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 30 flow. Second operand 3 states and 208 transitions. [2023-11-19 07:46:18,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 68 flow [2023-11-19 07:46:18,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:18,722 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 52 flow [2023-11-19 07:46:18,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-19 07:46:18,723 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:46:18,724 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 52 flow [2023-11-19 07:46:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:18,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:18,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:18,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:18,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash 656926601, now seen corresponding path program 2 times [2023-11-19 07:46:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101991711] [2023-11-19 07:46:18,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:46:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:18,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:18,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:46:19,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:46:19,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:19,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:46:19,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:19,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 07:46:19,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:46:19,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:46:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:19,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:19,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101991711] [2023-11-19 07:46:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101991711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:19,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:19,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404637659] [2023-11-19 07:46:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:19,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-11-19 07:46:19,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:19,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-11-19 07:46:19,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:19,443 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-11-19 07:46:19,444 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:19,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 25 events. 4/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 76. Up to 15 conditions per place. [2023-11-19 07:46:19,444 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 10 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2023-11-19 07:46:19,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 96 flow [2023-11-19 07:46:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2023-11-19 07:46:19,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44763513513513514 [2023-11-19 07:46:19,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 265 transitions. [2023-11-19 07:46:19,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 265 transitions. [2023-11-19 07:46:19,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:19,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 265 transitions. [2023-11-19 07:46:19,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,452 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 52 flow. Second operand 4 states and 265 transitions. [2023-11-19 07:46:19,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 96 flow [2023-11-19 07:46:19,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:19,454 INFO L231 Difference]: Finished difference. Result has 22 places, 13 transitions, 55 flow [2023-11-19 07:46:19,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2023-11-19 07:46:19,455 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-11-19 07:46:19,455 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 55 flow [2023-11-19 07:46:19,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:19,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:19,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 07:46:19,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:19,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:19,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash -402765918, now seen corresponding path program 1 times [2023-11-19 07:46:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197563834] [2023-11-19 07:46:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:19,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:19,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:19,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:19,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:46:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:19,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:19,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:19,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 07:46:19,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:46:19,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:46:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:19,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:19,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:46:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197563834] [2023-11-19 07:46:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197563834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:19,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506206277] [2023-11-19 07:46:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:46:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:20,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-11-19 07:46:20,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:20,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-11-19 07:46:20,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:20,115 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 07:46:20,116 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:46:20,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-11-19 07:46:20,116 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 5 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2023-11-19 07:46:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 67 flow [2023-11-19 07:46:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2023-11-19 07:46:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44425675675675674 [2023-11-19 07:46:20,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 263 transitions. [2023-11-19 07:46:20,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 263 transitions. [2023-11-19 07:46:20,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:20,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 263 transitions. [2023-11-19 07:46:20,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,125 INFO L175 Difference]: Start difference. First operand has 22 places, 13 transitions, 55 flow. Second operand 4 states and 263 transitions. [2023-11-19 07:46:20,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 67 flow [2023-11-19 07:46:20,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 11 transitions, 57 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:20,129 INFO L231 Difference]: Finished difference. Result has 22 places, 11 transitions, 47 flow [2023-11-19 07:46:20,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=22, PETRI_TRANSITIONS=11} [2023-11-19 07:46:20,130 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-11-19 07:46:20,130 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 11 transitions, 47 flow [2023-11-19 07:46:20,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:20,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:20,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:20,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-19 07:46:20,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 393201169, now seen corresponding path program 1 times [2023-11-19 07:46:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:46:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434192826] [2023-11-19 07:46:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:20,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:20,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:46:20,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:46:20,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 07:46:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:20,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:20,496 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 07:46:20,497 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:46:20,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-19 07:46:20,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-19 07:46:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-19 07:46:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-19 07:46:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-19 07:46:20,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:20,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:46:20,702 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-19 07:46:20,707 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:46:20,707 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:46:20,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-19 07:46:20,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:46:20 BasicIcfg [2023-11-19 07:46:20,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:46:20,740 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:46:20,740 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:46:20,740 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:46:20,741 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:11" (3/4) ... [2023-11-19 07:46:20,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:46:20,745 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:46:20,745 INFO L158 Benchmark]: Toolchain (without parser) took 10949.50ms. Allocated memory was 73.4MB in the beginning and 117.4MB in the end (delta: 44.0MB). Free memory was 48.9MB in the beginning and 83.3MB in the end (delta: -34.5MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-19 07:46:20,746 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:20,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.94ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 48.7MB in the beginning and 68.4MB in the end (delta: -19.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-19 07:46:20,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.47ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 66.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:20,747 INFO L158 Benchmark]: Boogie Preprocessor took 35.24ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 64.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:46:20,748 INFO L158 Benchmark]: RCFGBuilder took 483.61ms. Allocated memory is still 96.5MB. Free memory was 64.5MB in the beginning and 50.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:46:20,748 INFO L158 Benchmark]: TraceAbstraction took 9698.59ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 83.5MB in the end (delta: -34.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:20,749 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 117.4MB. Free memory was 83.5MB in the beginning and 83.3MB in the end (delta: 180.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:46:20,751 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.94ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 48.7MB in the beginning and 68.4MB in the end (delta: -19.7MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.47ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 66.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.24ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 64.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 483.61ms. Allocated memory is still 96.5MB. Free memory was 64.5MB in the beginning and 50.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9698.59ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 83.5MB in the end (delta: -34.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 117.4MB. Free memory was 83.5MB in the beginning and 83.3MB in the end (delta: 180.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 15 TransitionsAfterwards, 520 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 74 TotalNumberOfCompositions, 1200 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 619, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 314, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 619, independent: 221, independent conditional: 0, independent unconditional: 221, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 314, unknown conditional: 0, unknown unconditional: 314] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, g=0, id={7:0}] [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L690] 1 return ((void *)0); [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] CALL 0 reach_error() [L18] COND FALSE 0 !(0) [L18] 0 __assert_fail ("0", "13-privatized_41-traces-ex-7_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [A={3:0}, D={4:0}, \result={0:0}, arg={0:0}, arg={0:0}, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 5 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: 9.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 54 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 247 SizeOfPredicates, 2 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:46:20,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd9cd92-a740-44ee-b1cf-4ee88556404f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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: UNKNOWN: Overapproximated counterexample