./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_18-glob_guards.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_18-glob_guards.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8 --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 a0a52117517f5f1ef7fb9c68fe8f56609e6cd05991ff2a7b47c2b82f7b5210a3 --- 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-2329fc7 [2022-12-13 20:13:23,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:13:23,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:13:23,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:13:23,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:13:23,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:13:23,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:13:23,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:13:23,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:13:23,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:13:23,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:13:23,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:13:23,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:13:23,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:13:23,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:13:23,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:13:23,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:13:23,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:13:23,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:13:23,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:13:23,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:13:23,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:13:23,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:13:23,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:13:23,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:13:23,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:13:23,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:13:23,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:13:23,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:13:23,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:13:23,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:13:23,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:13:23,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:13:23,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:13:23,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:13:23,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:13:23,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:13:23,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:13:23,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:13:23,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:13:23,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:13:23,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:13:23,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:13:23,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:13:23,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:13:23,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:13:23,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:13:23,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:13:23,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:13:23,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:13:23,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:13:23,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:13:23,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:13:23,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:13:23,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:13:23,317 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:13:23,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:13:23,317 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:13:23,317 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_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a52117517f5f1ef7fb9c68fe8f56609e6cd05991ff2a7b47c2b82f7b5210a3 [2022-12-13 20:13:23,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:13:23,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:13:23,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:13:23,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:13:23,498 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:13:23,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/04-mutex_18-glob_guards.i [2022-12-13 20:13:26,019 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:13:26,189 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:13:26,189 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/sv-benchmarks/c/goblint-regression/04-mutex_18-glob_guards.i [2022-12-13 20:13:26,199 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/data/8d47916f5/c10759952f68498899f4ffc1b95f24fc/FLAG0b26c1dbb [2022-12-13 20:13:26,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/data/8d47916f5/c10759952f68498899f4ffc1b95f24fc [2022-12-13 20:13:26,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:13:26,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:13:26,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:13:26,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:13:26,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:13:26,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1c5f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26, skipping insertion in model container [2022-12-13 20:13:26,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:13:26,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:13:26,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:13:26,622 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:13:26,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:13:26,692 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:13:26,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26 WrapperNode [2022-12-13 20:13:26,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:13:26,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:13:26,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:13:26,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:13:26,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,731 INFO L138 Inliner]: procedures = 260, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-13 20:13:26,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:13:26,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:13:26,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:13:26,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:13:26,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:13:26,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:13:26,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:13:26,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:13:26,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (1/1) ... [2022-12-13 20:13:26,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:13:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:13:26,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:13:26,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:13:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:13:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:13:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:13:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:13:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:13:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:13:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:13:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:13:26,817 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:13:26,925 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:13:26,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:13:27,024 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:13:27,030 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:13:27,030 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:13:27,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:13:27 BoogieIcfgContainer [2022-12-13 20:13:27,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:13:27,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:13:27,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:13:27,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:13:27,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:13:26" (1/3) ... [2022-12-13 20:13:27,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1e8c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:13:27, skipping insertion in model container [2022-12-13 20:13:27,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:13:26" (2/3) ... [2022-12-13 20:13:27,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1e8c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:13:27, skipping insertion in model container [2022-12-13 20:13:27,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:13:27" (3/3) ... [2022-12-13 20:13:27,042 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_18-glob_guards.i [2022-12-13 20:13:27,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:13:27,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-13 20:13:27,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:13:27,111 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:13:27,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 136 flow [2022-12-13 20:13:27,172 INFO L130 PetriNetUnfolder]: 2/63 cut-off events. [2022-12-13 20:13:27,172 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:27,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 2/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2022-12-13 20:13:27,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 64 transitions, 136 flow [2022-12-13 20:13:27,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 58 transitions, 122 flow [2022-12-13 20:13:27,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:13:27,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 58 transitions, 122 flow [2022-12-13 20:13:27,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 58 transitions, 122 flow [2022-12-13 20:13:27,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 58 transitions, 122 flow [2022-12-13 20:13:27,214 INFO L130 PetriNetUnfolder]: 2/58 cut-off events. [2022-12-13 20:13:27,214 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:27,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 2/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2022-12-13 20:13:27,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 96 [2022-12-13 20:13:28,637 INFO L134 LiptonReduction]: Checked pairs total: 110 [2022-12-13 20:13:28,637 INFO L136 LiptonReduction]: Total number of compositions: 59 [2022-12-13 20:13:28,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:13:28,656 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;@4362094a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:13:28,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 20:13:28,658 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:13:28,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:28,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:28,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:13:28,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 20:13:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash 232, now seen corresponding path program 1 times [2022-12-13 20:13:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:28,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175781331] [2022-12-13 20:13:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:28,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:28,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175781331] [2022-12-13 20:13:28,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175781331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:28,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:28,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:13:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052176398] [2022-12-13 20:13:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:13:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:13:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:13:28,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 123 [2022-12-13 20:13:28,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 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) [2022-12-13 20:13:28,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:28,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 123 [2022-12-13 20:13:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:28,795 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2022-12-13 20:13:28,795 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:13:28,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 3/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 3 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2022-12-13 20:13:28,796 INFO L137 encePairwiseOnDemand]: 121/123 looper letters, 8 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2022-12-13 20:13:28,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 38 flow [2022-12-13 20:13:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:13:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:13:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 134 transitions. [2022-12-13 20:13:28,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2022-12-13 20:13:28,805 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 134 transitions. [2022-12-13 20:13:28,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 134 transitions. [2022-12-13 20:13:28,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:28,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 134 transitions. [2022-12-13 20:13:28,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,812 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,814 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 134 transitions. [2022-12-13 20:13:28,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 38 flow [2022-12-13 20:13:28,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:13:28,817 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 18 flow [2022-12-13 20:13:28,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=18, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2022-12-13 20:13:28,821 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2022-12-13 20:13:28,821 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 18 flow [2022-12-13 20:13:28,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2022-12-13 20:13:28,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:28,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:13:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:13:28,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 20:13:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 228537, now seen corresponding path program 1 times [2022-12-13 20:13:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:28,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357800844] [2022-12-13 20:13:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:28,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:28,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:28,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357800844] [2022-12-13 20:13:28,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357800844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:28,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:28,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:13:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320858324] [2022-12-13 20:13:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:28,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:28,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 123 [2022-12-13 20:13:28,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:28,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 123 [2022-12-13 20:13:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:28,932 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 20:13:28,933 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 23. Up to 10 conditions per place. [2022-12-13 20:13:28,933 INFO L137 encePairwiseOnDemand]: 120/123 looper letters, 5 selfloop transitions, 2 changer transitions 0/7 dead transitions. [2022-12-13 20:13:28,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 30 flow [2022-12-13 20:13:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2022-12-13 20:13:28,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2022-12-13 20:13:28,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2022-12-13 20:13:28,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2022-12-13 20:13:28,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:28,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2022-12-13 20:13:28,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,937 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 18 flow. Second operand 3 states and 173 transitions. [2022-12-13 20:13:28,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 30 flow [2022-12-13 20:13:28,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:13:28,938 INFO L231 Difference]: Finished difference. Result has 12 places, 7 transitions, 20 flow [2022-12-13 20:13:28,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=12, PETRI_TRANSITIONS=7} [2022-12-13 20:13:28,938 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2022-12-13 20:13:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 20 flow [2022-12-13 20:13:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:28,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:28,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:13:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:13:28,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 20:13:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash 228536, now seen corresponding path program 1 times [2022-12-13 20:13:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677532021] [2022-12-13 20:13:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:28,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677532021] [2022-12-13 20:13:28,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677532021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:28,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:28,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:13:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339841281] [2022-12-13 20:13:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:29,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2022-12-13 20:13:29,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:29,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2022-12-13 20:13:29,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:29,032 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 20:13:29,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:29,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2022-12-13 20:13:29,033 INFO L137 encePairwiseOnDemand]: 120/123 looper letters, 4 selfloop transitions, 2 changer transitions 0/6 dead transitions. [2022-12-13 20:13:29,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 30 flow [2022-12-13 20:13:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2022-12-13 20:13:29,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2022-12-13 20:13:29,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2022-12-13 20:13:29,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2022-12-13 20:13:29,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:29,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2022-12-13 20:13:29,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,038 INFO L175 Difference]: Start difference. First operand has 12 places, 7 transitions, 20 flow. Second operand 3 states and 169 transitions. [2022-12-13 20:13:29,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 30 flow [2022-12-13 20:13:29,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:13:29,038 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 18 flow [2022-12-13 20:13:29,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=18, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2022-12-13 20:13:29,039 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2022-12-13 20:13:29,039 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 18 flow [2022-12-13 20:13:29,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:29,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:13:29,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:13:29,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 20:13:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1781458283, now seen corresponding path program 1 times [2022-12-13 20:13:29,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:29,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615344141] [2022-12-13 20:13:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:29,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:13:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:29,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615344141] [2022-12-13 20:13:29,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615344141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:29,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:13:29,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:13:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707040762] [2022-12-13 20:13:29,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:13:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:13:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:13:29,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 123 [2022-12-13 20:13:29,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 6 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:29,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 123 [2022-12-13 20:13:29,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:29,203 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2022-12-13 20:13:29,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:13:29,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 16. Up to 7 conditions per place. [2022-12-13 20:13:29,204 INFO L137 encePairwiseOnDemand]: 121/123 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2022-12-13 20:13:29,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 5 transitions, 24 flow [2022-12-13 20:13:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:13:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:13:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2022-12-13 20:13:29,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2022-12-13 20:13:29,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2022-12-13 20:13:29,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2022-12-13 20:13:29,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:29,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2022-12-13 20:13:29,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,208 INFO L175 Difference]: Start difference. First operand has 11 places, 6 transitions, 18 flow. Second operand 3 states and 180 transitions. [2022-12-13 20:13:29,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 5 transitions, 24 flow [2022-12-13 20:13:29,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 5 transitions, 23 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:13:29,208 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2022-12-13 20:13:29,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2022-12-13 20:13:29,209 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2022-12-13 20:13:29,209 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2022-12-13 20:13:29,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:29,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2022-12-13 20:13:29,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2022-12-13 20:13:29,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2022-12-13 20:13:29,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-12-13 20:13:29,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2022-12-13 20:13:29,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-13 20:13:29,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:13:29,213 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 20:13:29,216 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:13:29,216 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:13:29,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:13:29 BasicIcfg [2022-12-13 20:13:29,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:13:29,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:13:29,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:13:29,220 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:13:29,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:13:27" (3/4) ... [2022-12-13 20:13:29,223 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:13:29,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 20:13:29,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 20:13:29,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:13:29,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 20:13:29,254 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:13:29,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:13:29,254 INFO L158 Benchmark]: Toolchain (without parser) took 3037.69ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 85.6MB in the beginning and 69.0MB in the end (delta: 16.6MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,255 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:13:29,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.63ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 59.0MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.64ms. Allocated memory is still 119.5MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,255 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 119.5MB. Free memory was 56.9MB in the beginning and 55.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,256 INFO L158 Benchmark]: RCFGBuilder took 278.65ms. Allocated memory is still 119.5MB. Free memory was 55.3MB in the beginning and 43.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,256 INFO L158 Benchmark]: TraceAbstraction took 2184.17ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 42.2MB in the beginning and 71.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:13:29,256 INFO L158 Benchmark]: Witness Printer took 33.62ms. Allocated memory is still 144.7MB. Free memory was 71.1MB in the beginning and 69.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:13:29,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory was 60.4MB in the beginning and 60.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.63ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 59.0MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.64ms. Allocated memory is still 119.5MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 119.5MB. Free memory was 56.9MB in the beginning and 55.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.65ms. Allocated memory is still 119.5MB. Free memory was 55.3MB in the beginning and 43.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2184.17ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 42.2MB in the beginning and 71.1MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.62ms. Allocated memory is still 144.7MB. Free memory was 71.1MB in the beginning and 69.0MB 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: 1.4s, 60 PlacesBefore, 14 PlacesAfterwards, 58 TransitionsBefore, 10 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 59 TotalNumberOfCompositions, 110 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 110, independent: 110, independent conditional: 0, independent unconditional: 110, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 58, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 110, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 58, unknown conditional: 0, unknown unconditional: 58] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: 926]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 70 locations, 6 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: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:13:29,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d5b0be-e4b6-4f3e-ad2b-046a19f227aa/bin/uautomizer-uyxdKDjOR8/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