./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --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 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:51:24,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:51:24,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:51:24,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:51:24,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:51:24,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:51:24,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:51:24,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:51:24,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:51:24,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:51:24,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:51:24,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:51:24,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:51:24,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:51:24,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:51:24,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:51:24,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:51:24,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:51:24,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:51:24,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:51:24,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:51:24,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:51:24,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:51:24,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:51:24,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:51:24,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:51:24,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:51:24,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:51:24,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:51:24,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:51:24,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:51:24,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:51:24,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:51:24,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:51:24,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:51:24,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:51:24,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:51:24,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:51:24,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:51:24,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:51:24,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:51:24,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 03:51:24,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:51:24,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:51:24,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:51:24,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:51:24,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:51:24,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:51:24,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:51:24,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:51:24,983 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:51:24,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:51:24,983 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:51:24,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:51:24,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:51:24,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:51:24,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:51:24,984 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:51:24,984 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:51:24,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:51:24,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:51:24,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:51:24,985 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:51:24,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:51:24,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:51:24,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:51:24,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:51:24,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:51:24,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:51:24,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:51:24,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:51:24,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:51:24,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:51:24,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:51:24,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:51:24,988 INFO L138 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_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2022-11-23 03:51:25,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:51:25,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:51:25,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:51:25,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:51:25,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:51:25,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2022-11-23 03:51:28,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:51:28,654 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:51:28,654 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2022-11-23 03:51:28,681 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/data/5a76d3dda/43474fa71d80460895ca301e14619032/FLAG73948e179 [2022-11-23 03:51:28,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/data/5a76d3dda/43474fa71d80460895ca301e14619032 [2022-11-23 03:51:28,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:51:28,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:51:28,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:51:28,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:51:28,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:51:28,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:28" (1/1) ... [2022-11-23 03:51:28,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc081e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:28, skipping insertion in model container [2022-11-23 03:51:28,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:28" (1/1) ... [2022-11-23 03:51:28,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:51:28,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:51:29,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:51:29,155 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:51:29,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:51:29,240 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:51:29,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29 WrapperNode [2022-11-23 03:51:29,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:51:29,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:51:29,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:51:29,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:51:29,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,281 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-23 03:51:29,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:51:29,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:51:29,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:51:29,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:51:29,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:51:29,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:51:29,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:51:29,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:51:29,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (1/1) ... [2022-11-23 03:51:29,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:51:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:51:29,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:51:29,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:51:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 03:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:51:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 03:51:29,390 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 03:51:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:51:29,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:51:29,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:51:29,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:51:29,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:51:29,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:51:29,523 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:51:29,748 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:51:29,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:51:29,754 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:51:29,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:29 BoogieIcfgContainer [2022-11-23 03:51:29,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:51:29,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:51:29,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:51:29,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:51:29,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:28" (1/3) ... [2022-11-23 03:51:29,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e49d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:29, skipping insertion in model container [2022-11-23 03:51:29,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:29" (2/3) ... [2022-11-23 03:51:29,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e49d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:29, skipping insertion in model container [2022-11-23 03:51:29,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:29" (3/3) ... [2022-11-23 03:51:29,766 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2022-11-23 03:51:29,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:51:29,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-23 03:51:29,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:51:29,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:51:29,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 117 flow [2022-11-23 03:51:29,899 INFO L130 PetriNetUnfolder]: 0/55 cut-off events. [2022-11-23 03:51:29,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:29,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-23 03:51:29,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 56 transitions, 117 flow [2022-11-23 03:51:29,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 55 transitions, 113 flow [2022-11-23 03:51:29,911 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:51:29,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 55 transitions, 113 flow [2022-11-23 03:51:29,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 55 transitions, 113 flow [2022-11-23 03:51:29,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 113 flow [2022-11-23 03:51:29,953 INFO L130 PetriNetUnfolder]: 0/55 cut-off events. [2022-11-23 03:51:29,953 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:29,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-23 03:51:29,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 324 [2022-11-23 03:51:32,610 INFO L134 LiptonReduction]: Checked pairs total: 606 [2022-11-23 03:51:32,610 INFO L136 LiptonReduction]: Total number of compositions: 56 [2022-11-23 03:51:32,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:51:32,633 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;@4af1bb55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:51:32,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 03:51:32,635 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 03:51:32,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:32,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:32,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 03:51:32,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:32,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 208, now seen corresponding path program 1 times [2022-11-23 03:51:32,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:32,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397993131] [2022-11-23 03:51:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:32,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397993131] [2022-11-23 03:51:32,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397993131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:32,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:32,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 03:51:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965471291] [2022-11-23 03:51:32,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:51:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:51:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:51:32,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 112 [2022-11-23 03:51:32,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:32,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:32,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 112 [2022-11-23 03:51:32,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:32,920 INFO L130 PetriNetUnfolder]: 30/73 cut-off events. [2022-11-23 03:51:32,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:32,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 73 events. 30/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 249 event pairs, 30 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 142. Up to 74 conditions per place. [2022-11-23 03:51:32,926 INFO L137 encePairwiseOnDemand]: 110/112 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2022-11-23 03:51:32,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 55 flow [2022-11-23 03:51:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:51:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:51:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 125 transitions. [2022-11-23 03:51:32,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5580357142857143 [2022-11-23 03:51:32,948 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 125 transitions. [2022-11-23 03:51:32,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 125 transitions. [2022-11-23 03:51:32,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:32,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 125 transitions. [2022-11-23 03:51:32,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:32,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:32,969 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:32,971 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 2 states and 125 transitions. [2022-11-23 03:51:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 55 flow [2022-11-23 03:51:32,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:51:32,977 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2022-11-23 03:51:32,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2022-11-23 03:51:32,984 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2022-11-23 03:51:32,984 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2022-11-23 03:51:32,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:32,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:32,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:51:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:51:32,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 202866, now seen corresponding path program 1 times [2022-11-23 03:51:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:32,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546759497] [2022-11-23 03:51:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:32,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:33,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546759497] [2022-11-23 03:51:33,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546759497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:33,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:33,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:51:33,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731620681] [2022-11-23 03:51:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:33,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 112 [2022-11-23 03:51:33,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:33,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 112 [2022-11-23 03:51:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:33,470 INFO L130 PetriNetUnfolder]: 20/51 cut-off events. [2022-11-23 03:51:33,470 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 51 events. 20/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 142 event pairs, 20 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 104. Up to 51 conditions per place. [2022-11-23 03:51:33,473 INFO L137 encePairwiseOnDemand]: 109/112 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2022-11-23 03:51:33,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 46 flow [2022-11-23 03:51:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2022-11-23 03:51:33,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2022-11-23 03:51:33,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2022-11-23 03:51:33,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2022-11-23 03:51:33,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:33,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2022-11-23 03:51:33,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,491 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 172 transitions. [2022-11-23 03:51:33,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 46 flow [2022-11-23 03:51:33,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:51:33,495 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 26 flow [2022-11-23 03:51:33,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=26, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2022-11-23 03:51:33,496 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2022-11-23 03:51:33,497 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 26 flow [2022-11-23 03:51:33,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:33,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:51:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:51:33,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash 202880, now seen corresponding path program 1 times [2022-11-23 03:51:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:33,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577242421] [2022-11-23 03:51:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:33,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:33,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577242421] [2022-11-23 03:51:33,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577242421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:33,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:51:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062648919] [2022-11-23 03:51:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:33,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 112 [2022-11-23 03:51:33,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:33,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 112 [2022-11-23 03:51:33,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:33,704 INFO L130 PetriNetUnfolder]: 12/35 cut-off events. [2022-11-23 03:51:33,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:33,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 35 events. 12/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 6 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 73. Up to 19 conditions per place. [2022-11-23 03:51:33,709 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 10 selfloop transitions, 3 changer transitions 0/13 dead transitions. [2022-11-23 03:51:33,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 56 flow [2022-11-23 03:51:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-23 03:51:33,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2022-11-23 03:51:33,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-23 03:51:33,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-23 03:51:33,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:33,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-23 03:51:33,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,719 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 26 flow. Second operand 3 states and 171 transitions. [2022-11-23 03:51:33,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 56 flow [2022-11-23 03:51:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 55 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:51:33,720 INFO L231 Difference]: Finished difference. Result has 18 places, 10 transitions, 34 flow [2022-11-23 03:51:33,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2022-11-23 03:51:33,722 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2022-11-23 03:51:33,723 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 34 flow [2022-11-23 03:51:33,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:33,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:51:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:51:33,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash 194966779, now seen corresponding path program 1 times [2022-11-23 03:51:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:33,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804817562] [2022-11-23 03:51:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:33,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804817562] [2022-11-23 03:51:33,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804817562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:33,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:33,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:51:33,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688775408] [2022-11-23 03:51:33,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:33,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:33,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:33,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 112 [2022-11-23 03:51:33,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:33,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 112 [2022-11-23 03:51:33,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:33,877 INFO L130 PetriNetUnfolder]: 9/27 cut-off events. [2022-11-23 03:51:33,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:33,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 27 events. 9/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 6 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 67. Up to 19 conditions per place. [2022-11-23 03:51:33,878 INFO L137 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 4/12 dead transitions. [2022-11-23 03:51:33,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 59 flow [2022-11-23 03:51:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2022-11-23 03:51:33,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2022-11-23 03:51:33,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2022-11-23 03:51:33,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2022-11-23 03:51:33,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:33,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2022-11-23 03:51:33,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,884 INFO L175 Difference]: Start difference. First operand has 18 places, 10 transitions, 34 flow. Second operand 3 states and 166 transitions. [2022-11-23 03:51:33,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 59 flow [2022-11-23 03:51:33,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:33,885 INFO L231 Difference]: Finished difference. Result has 17 places, 7 transitions, 25 flow [2022-11-23 03:51:33,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=17, PETRI_TRANSITIONS=7} [2022-11-23 03:51:33,886 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2022-11-23 03:51:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 7 transitions, 25 flow [2022-11-23 03:51:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:33,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:51:33,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1637259210, now seen corresponding path program 1 times [2022-11-23 03:51:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:33,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850545695] [2022-11-23 03:51:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850545695] [2022-11-23 03:51:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850545695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:33,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:33,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:51:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868122778] [2022-11-23 03:51:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:33,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:33,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 112 [2022-11-23 03:51:33,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 7 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:33,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:33,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 112 [2022-11-23 03:51:33,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:34,014 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2022-11-23 03:51:34,014 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:51:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 10 events. 1/10 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2022-11-23 03:51:34,015 INFO L137 encePairwiseOnDemand]: 109/112 looper letters, 5 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2022-11-23 03:51:34,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 46 flow [2022-11-23 03:51:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2022-11-23 03:51:34,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-11-23 03:51:34,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2022-11-23 03:51:34,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2022-11-23 03:51:34,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:34,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2022-11-23 03:51:34,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,021 INFO L175 Difference]: Start difference. First operand has 17 places, 7 transitions, 25 flow. Second operand 3 states and 160 transitions. [2022-11-23 03:51:34,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 46 flow [2022-11-23 03:51:34,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 8 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:34,022 INFO L231 Difference]: Finished difference. Result has 15 places, 7 transitions, 27 flow [2022-11-23 03:51:34,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2022-11-23 03:51:34,023 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -4 predicate places. [2022-11-23 03:51:34,024 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 7 transitions, 27 flow [2022-11-23 03:51:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:34,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:51:34,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-23 03:51:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1615466520, now seen corresponding path program 2 times [2022-11-23 03:51:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:34,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686476478] [2022-11-23 03:51:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:51:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:34,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686476478] [2022-11-23 03:51:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686476478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:34,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:51:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420328585] [2022-11-23 03:51:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:51:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:51:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:51:34,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 112 [2022-11-23 03:51:34,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 7 transitions, 27 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:34,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 112 [2022-11-23 03:51:34,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:34,190 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-11-23 03:51:34,190 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:51:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 9 events. 1/9 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 1 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 28. Up to 9 conditions per place. [2022-11-23 03:51:34,191 INFO L137 encePairwiseOnDemand]: 110/112 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2022-11-23 03:51:34,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 6 transitions, 35 flow [2022-11-23 03:51:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2022-11-23 03:51:34,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2022-11-23 03:51:34,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2022-11-23 03:51:34,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2022-11-23 03:51:34,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:34,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2022-11-23 03:51:34,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,196 INFO L175 Difference]: Start difference. First operand has 15 places, 7 transitions, 27 flow. Second operand 3 states and 148 transitions. [2022-11-23 03:51:34,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 6 transitions, 35 flow [2022-11-23 03:51:34,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 6 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:34,197 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2022-11-23 03:51:34,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2022-11-23 03:51:34,198 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -5 predicate places. [2022-11-23 03:51:34,198 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2022-11-23 03:51:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:34,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-11-23 03:51:34,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-23 03:51:34,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-23 03:51:34,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-23 03:51:34,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-11-23 03:51:34,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-11-23 03:51:34,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2022-11-23 03:51:34,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2022-11-23 03:51:34,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2022-11-23 03:51:34,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2022-11-23 03:51:34,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:51:34,206 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-23 03:51:34,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:51:34,212 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:51:34,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:51:34 BasicIcfg [2022-11-23 03:51:34,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:51:34,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:51:34,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:51:34,217 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:51:34,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:29" (3/4) ... [2022-11-23 03:51:34,221 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:51:34,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-23 03:51:34,231 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 03:51:34,232 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 03:51:34,232 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 03:51:34,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:51:34,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:51:34,262 INFO L158 Benchmark]: Toolchain (without parser) took 5560.88ms. Allocated memory is still 213.9MB. Free memory was 182.7MB in the beginning and 156.0MB in the end (delta: 26.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-23 03:51:34,262 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:51:34,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.99ms. Allocated memory is still 213.9MB. Free memory was 182.7MB in the beginning and 163.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:51:34,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.10ms. Allocated memory is still 213.9MB. Free memory was 163.8MB in the beginning and 162.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:51:34,263 INFO L158 Benchmark]: Boogie Preprocessor took 22.16ms. Allocated memory is still 213.9MB. Free memory was 162.4MB in the beginning and 161.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:51:34,264 INFO L158 Benchmark]: RCFGBuilder took 451.86ms. Allocated memory is still 213.9MB. Free memory was 161.1MB in the beginning and 148.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:51:34,264 INFO L158 Benchmark]: TraceAbstraction took 4457.08ms. Allocated memory is still 213.9MB. Free memory was 147.8MB in the beginning and 159.1MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:51:34,265 INFO L158 Benchmark]: Witness Printer took 44.45ms. Allocated memory is still 213.9MB. Free memory was 158.0MB in the beginning and 156.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:51:34,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.99ms. Allocated memory is still 213.9MB. Free memory was 182.7MB in the beginning and 163.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.10ms. Allocated memory is still 213.9MB. Free memory was 163.8MB in the beginning and 162.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.16ms. Allocated memory is still 213.9MB. Free memory was 162.4MB in the beginning and 161.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.86ms. Allocated memory is still 213.9MB. Free memory was 161.1MB in the beginning and 148.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4457.08ms. Allocated memory is still 213.9MB. Free memory was 147.8MB in the beginning and 159.1MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.45ms. Allocated memory is still 213.9MB. Free memory was 158.0MB in the beginning and 156.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 59 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 324 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 606 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 463, independent: 411, independent conditional: 0, independent unconditional: 411, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 237, independent: 220, independent conditional: 0, independent unconditional: 220, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 237, independent: 210, independent conditional: 0, independent unconditional: 210, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 113, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 463, independent: 191, independent conditional: 0, independent unconditional: 191, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 68 locations, 10 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 22 mSDtfsCounter, 231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 03:51:34,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52fabe7-dd34-4071-95ac-7912b36e5480/bin/uautomizer-QkZJyEgLgS/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: TRUE