./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8 --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 531fb1e21d8f5a9631a3764359a014fcdd0042558e9afceaf1b553fa03cda562 --- 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-e04fb08 [2022-11-16 12:28:23,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:23,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:23,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:23,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:23,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:23,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:23,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:23,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:23,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:23,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:23,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:23,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:23,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:23,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:23,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:23,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:23,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:23,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:23,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:23,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:23,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:23,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:23,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:23,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:23,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:23,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:23,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:23,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:23,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:23,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:23,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:23,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:23,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:23,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:23,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:23,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:23,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:23,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:23,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:23,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:23,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:28:23,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:23,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:23,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:23,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:23,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:23,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:23,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:23,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:23,591 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:23,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:23,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:23,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:28:23,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:23,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:23,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:23,594 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:28:23,594 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:28:23,594 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:28:23,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:23,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:28:23,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:23,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:23,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:23,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:23,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:23,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:23,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:23,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:23,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:23,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:23,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531fb1e21d8f5a9631a3764359a014fcdd0042558e9afceaf1b553fa03cda562 [2022-11-16 12:28:23,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:23,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:23,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:23,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:23,927 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:23,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-11-16 12:28:24,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/data/1ee983c67/09e710de797d426d8e647e7b96d1faff/FLAG97fee4d9b [2022-11-16 12:28:24,753 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:24,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-11-16 12:28:24,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/data/1ee983c67/09e710de797d426d8e647e7b96d1faff/FLAG97fee4d9b [2022-11-16 12:28:24,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/data/1ee983c67/09e710de797d426d8e647e7b96d1faff [2022-11-16 12:28:24,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:24,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:24,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:24,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:24,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:24,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:24" (1/1) ... [2022-11-16 12:28:24,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff66555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:24, skipping insertion in model container [2022-11-16 12:28:24,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:24" (1/1) ... [2022-11-16 12:28:24,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:25,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:25,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:25,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:25,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:25,845 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:25,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25 WrapperNode [2022-11-16 12:28:25,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:25,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:25,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:25,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:25,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,937 INFO L138 Inliner]: procedures = 371, calls = 40, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 116 [2022-11-16 12:28:25,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:25,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:25,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:25,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:25,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:25,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:25,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:25,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:25,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (1/1) ... [2022-11-16 12:28:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:26,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:26,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:28:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:28:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:28:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:28:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:28:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:26,075 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:28:26,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:26,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:26,867 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:26,877 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:26,877 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:28:26,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:26 BoogieIcfgContainer [2022-11-16 12:28:26,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:26,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:26,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:26,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:26,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:24" (1/3) ... [2022-11-16 12:28:26,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c454565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:26, skipping insertion in model container [2022-11-16 12:28:26,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:25" (2/3) ... [2022-11-16 12:28:26,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c454565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:26, skipping insertion in model container [2022-11-16 12:28:26,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:26" (3/3) ... [2022-11-16 12:28:26,890 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist.i [2022-11-16 12:28:26,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:26,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-11-16 12:28:26,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:28:27,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:28:27,100 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:28:27,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 188 transitions, 381 flow [2022-11-16 12:28:27,131 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 188 transitions, 381 flow [2022-11-16 12:28:27,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 188 transitions, 381 flow [2022-11-16 12:28:27,316 INFO L130 PetriNetUnfolder]: 2/187 cut-off events. [2022-11-16 12:28:27,317 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:27,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 187 events. 2/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 186 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-16 12:28:27,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 3136 [2022-11-16 12:29:03,170 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 220 DAG size of output: 208 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:29:18,117 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 219 DAG size of output: 207 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:29:37,899 WARN L233 SmtUtils]: Spent 15.36s on a formula simplification. DAG size of input: 239 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:29:44,323 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:29:57,336 WARN L233 SmtUtils]: Spent 13.01s on a formula simplification. DAG size of input: 238 DAG size of output: 226 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:30:02,606 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:30:13,376 WARN L233 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 225 DAG size of output: 213 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:30:28,387 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 224 DAG size of output: 212 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:31:00,058 WARN L233 SmtUtils]: Spent 27.39s on a formula simplification. DAG size of input: 298 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:31:15,579 WARN L233 SmtUtils]: Spent 15.52s on a formula simplification that was a NOOP. DAG size: 279 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:31:56,366 WARN L233 SmtUtils]: Spent 40.78s on a formula simplification. DAG size of input: 303 DAG size of output: 292 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:32:11,952 WARN L233 SmtUtils]: Spent 15.58s on a formula simplification that was a NOOP. DAG size: 281 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:32:12,356 INFO L134 LiptonReduction]: Checked pairs total: 11482 [2022-11-16 12:32:12,356 INFO L136 LiptonReduction]: Total number of compositions: 246 [2022-11-16 12:32:12,364 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 123 flow [2022-11-16 12:32:12,423 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 370 states, 247 states have (on average 2.7530364372469633) internal successors, (680), 369 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:12,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:12,446 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=FINITE_AUTOMATA, 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;@4f3d8abc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:12,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-11-16 12:32:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 370 states, 247 states have (on average 2.7530364372469633) internal successors, (680), 369 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 12:32:12,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:12,455 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 12:32:12,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash 703, now seen corresponding path program 1 times [2022-11-16 12:32:12,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:12,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148979409] [2022-11-16 12:32:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:12,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:12,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148979409] [2022-11-16 12:32:12,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148979409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:12,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:12,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 12:32:12,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844583290] [2022-11-16 12:32:12,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:12,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:32:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:32:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:12,663 INFO L87 Difference]: Start difference. First operand has 370 states, 247 states have (on average 2.7530364372469633) internal successors, (680), 369 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:12,893 INFO L93 Difference]: Finished difference Result 318 states and 598 transitions. [2022-11-16 12:32:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:32:12,896 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 12:32:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:12,916 INFO L225 Difference]: With dead ends: 318 [2022-11-16 12:32:12,917 INFO L226 Difference]: Without dead ends: 318 [2022-11-16 12:32:12,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:12,926 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:12,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:32:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-16 12:32:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2022-11-16 12:32:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 231 states have (on average 2.588744588744589) internal successors, (598), 317 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 598 transitions. [2022-11-16 12:32:13,005 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 598 transitions. Word has length 1 [2022-11-16 12:32:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:13,005 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 598 transitions. [2022-11-16 12:32:13,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 598 transitions. [2022-11-16 12:32:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:32:13,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:13,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:32:13,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:32:13,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 702494, now seen corresponding path program 1 times [2022-11-16 12:32:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973058060] [2022-11-16 12:32:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973058060] [2022-11-16 12:32:14,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973058060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:14,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:14,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:32:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133475657] [2022-11-16 12:32:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:14,190 INFO L87 Difference]: Start difference. First operand 318 states and 598 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:14,438 INFO L93 Difference]: Finished difference Result 323 states and 587 transitions. [2022-11-16 12:32:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:32:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:14,440 INFO L225 Difference]: With dead ends: 323 [2022-11-16 12:32:14,441 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 12:32:14,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:14,444 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:14,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:32:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 12:32:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 287. [2022-11-16 12:32:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 211 states have (on average 2.5450236966824646) internal successors, (537), 286 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 537 transitions. [2022-11-16 12:32:14,469 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 537 transitions. Word has length 3 [2022-11-16 12:32:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:14,470 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 537 transitions. [2022-11-16 12:32:14,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 537 transitions. [2022-11-16 12:32:14,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:32:14,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:14,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:32:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:32:14,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 21777866, now seen corresponding path program 1 times [2022-11-16 12:32:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:14,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523102330] [2022-11-16 12:32:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:15,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:15,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523102330] [2022-11-16 12:32:15,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523102330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:15,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:15,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:32:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949604700] [2022-11-16 12:32:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:15,980 INFO L87 Difference]: Start difference. First operand 287 states and 537 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:16,262 INFO L93 Difference]: Finished difference Result 283 states and 528 transitions. [2022-11-16 12:32:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:32:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:16,264 INFO L225 Difference]: With dead ends: 283 [2022-11-16 12:32:16,264 INFO L226 Difference]: Without dead ends: 283 [2022-11-16 12:32:16,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:16,265 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:16,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:32:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-16 12:32:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-11-16 12:32:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 208 states have (on average 2.5384615384615383) internal successors, (528), 282 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 528 transitions. [2022-11-16 12:32:16,277 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 528 transitions. Word has length 4 [2022-11-16 12:32:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 528 transitions. [2022-11-16 12:32:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 528 transitions. [2022-11-16 12:32:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:32:16,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:16,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:32:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:32:16,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 21777742, now seen corresponding path program 1 times [2022-11-16 12:32:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465525770] [2022-11-16 12:32:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465525770] [2022-11-16 12:32:16,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465525770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:16,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:16,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:32:16,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113003144] [2022-11-16 12:32:16,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:16,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:16,926 INFO L87 Difference]: Start difference. First operand 283 states and 528 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:17,096 INFO L93 Difference]: Finished difference Result 281 states and 524 transitions. [2022-11-16 12:32:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:17,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:32:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:17,100 INFO L225 Difference]: With dead ends: 281 [2022-11-16 12:32:17,100 INFO L226 Difference]: Without dead ends: 281 [2022-11-16 12:32:17,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:17,101 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:17,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:32:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-16 12:32:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-11-16 12:32:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 206 states have (on average 2.5436893203883497) internal successors, (524), 280 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 524 transitions. [2022-11-16 12:32:17,114 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 524 transitions. Word has length 4 [2022-11-16 12:32:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:17,114 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 524 transitions. [2022-11-16 12:32:17,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,115 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 524 transitions. [2022-11-16 12:32:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:32:17,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:17,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:32:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:32:17,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash 675169755, now seen corresponding path program 1 times [2022-11-16 12:32:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:17,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902063877] [2022-11-16 12:32:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:17,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902063877] [2022-11-16 12:32:17,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902063877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:17,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:17,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204023497] [2022-11-16 12:32:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:17,291 INFO L87 Difference]: Start difference. First operand 281 states and 524 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:17,632 INFO L93 Difference]: Finished difference Result 266 states and 496 transitions. [2022-11-16 12:32:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:32:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:17,634 INFO L225 Difference]: With dead ends: 266 [2022-11-16 12:32:17,634 INFO L226 Difference]: Without dead ends: 266 [2022-11-16 12:32:17,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:17,635 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:17,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:32:17,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-16 12:32:17,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2022-11-16 12:32:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 198 states have (on average 2.505050505050505) internal successors, (496), 265 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 496 transitions. [2022-11-16 12:32:17,643 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 496 transitions. Word has length 5 [2022-11-16 12:32:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:17,644 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 496 transitions. [2022-11-16 12:32:17,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 496 transitions. [2022-11-16 12:32:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:32:17,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:17,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:32:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:32:17,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:17,661 INFO L85 PathProgramCache]: Analyzing trace with hash 675169723, now seen corresponding path program 1 times [2022-11-16 12:32:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:17,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537271099] [2022-11-16 12:32:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:17,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:17,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:17,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537271099] [2022-11-16 12:32:17,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537271099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:17,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:17,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280046938] [2022-11-16 12:32:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:17,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:32:17,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:32:17,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:17,757 INFO L87 Difference]: Start difference. First operand 266 states and 496 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:18,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:18,131 INFO L93 Difference]: Finished difference Result 301 states and 547 transitions. [2022-11-16 12:32:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:32:18,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:32:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:18,133 INFO L225 Difference]: With dead ends: 301 [2022-11-16 12:32:18,133 INFO L226 Difference]: Without dead ends: 301 [2022-11-16 12:32:18,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:32:18,134 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:18,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:32:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-16 12:32:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 253. [2022-11-16 12:32:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 194 states have (on average 2.4948453608247423) internal successors, (484), 252 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 484 transitions. [2022-11-16 12:32:18,142 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 484 transitions. Word has length 5 [2022-11-16 12:32:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:18,143 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 484 transitions. [2022-11-16 12:32:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 484 transitions. [2022-11-16 12:32:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:32:18,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:18,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:32:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:32:18,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 675110555, now seen corresponding path program 1 times [2022-11-16 12:32:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:18,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24381889] [2022-11-16 12:32:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24381889] [2022-11-16 12:32:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24381889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:20,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:20,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625690623] [2022-11-16 12:32:20,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:20,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:20,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:20,048 INFO L87 Difference]: Start difference. First operand 253 states and 484 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:20,434 INFO L93 Difference]: Finished difference Result 250 states and 478 transitions. [2022-11-16 12:32:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:32:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:20,436 INFO L225 Difference]: With dead ends: 250 [2022-11-16 12:32:20,436 INFO L226 Difference]: Without dead ends: 250 [2022-11-16 12:32:20,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:20,437 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:20,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:32:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-16 12:32:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-16 12:32:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 191 states have (on average 2.5026178010471205) internal successors, (478), 249 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 478 transitions. [2022-11-16 12:32:20,444 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 478 transitions. Word has length 5 [2022-11-16 12:32:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:20,445 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 478 transitions. [2022-11-16 12:32:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 478 transitions. [2022-11-16 12:32:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:32:20,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:20,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:32:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:32:20,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash 675110316, now seen corresponding path program 1 times [2022-11-16 12:32:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53457457] [2022-11-16 12:32:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:20,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:21,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53457457] [2022-11-16 12:32:21,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53457457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:21,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:21,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500644391] [2022-11-16 12:32:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:21,898 INFO L87 Difference]: Start difference. First operand 250 states and 478 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:22,229 INFO L93 Difference]: Finished difference Result 248 states and 474 transitions. [2022-11-16 12:32:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:32:22,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:32:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:22,231 INFO L225 Difference]: With dead ends: 248 [2022-11-16 12:32:22,231 INFO L226 Difference]: Without dead ends: 248 [2022-11-16 12:32:22,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:32:22,232 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:22,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:32:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-16 12:32:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-16 12:32:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 189 states have (on average 2.507936507936508) internal successors, (474), 247 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 474 transitions. [2022-11-16 12:32:22,239 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 474 transitions. Word has length 5 [2022-11-16 12:32:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:22,240 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 474 transitions. [2022-11-16 12:32:22,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 474 transitions. [2022-11-16 12:32:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:32:22,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:22,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:32:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:32:22,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-16 12:32:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -544573472, now seen corresponding path program 1 times [2022-11-16 12:32:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:22,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705641233] [2022-11-16 12:32:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:22,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:32:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:32:22,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:32:22,501 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:32:22,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 52 remaining) [2022-11-16 12:32:22,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 52 remaining) [2022-11-16 12:32:22,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 52 remaining) [2022-11-16 12:32:22,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 52 remaining) [2022-11-16 12:32:22,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 52 remaining) [2022-11-16 12:32:22,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 52 remaining) [2022-11-16 12:32:22,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 52 remaining) [2022-11-16 12:32:22,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 52 remaining) [2022-11-16 12:32:22,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 52 remaining) [2022-11-16 12:32:22,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 52 remaining) [2022-11-16 12:32:22,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 52 remaining) [2022-11-16 12:32:22,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 52 remaining) [2022-11-16 12:32:22,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 52 remaining) [2022-11-16 12:32:22,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 52 remaining) [2022-11-16 12:32:22,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 52 remaining) [2022-11-16 12:32:22,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 52 remaining) [2022-11-16 12:32:22,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 52 remaining) [2022-11-16 12:32:22,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 52 remaining) [2022-11-16 12:32:22,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 52 remaining) [2022-11-16 12:32:22,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 52 remaining) [2022-11-16 12:32:22,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 52 remaining) [2022-11-16 12:32:22,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 52 remaining) [2022-11-16 12:32:22,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 52 remaining) [2022-11-16 12:32:22,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 52 remaining) [2022-11-16 12:32:22,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 52 remaining) [2022-11-16 12:32:22,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 52 remaining) [2022-11-16 12:32:22,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 52 remaining) [2022-11-16 12:32:22,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (24 of 52 remaining) [2022-11-16 12:32:22,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 52 remaining) [2022-11-16 12:32:22,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 52 remaining) [2022-11-16 12:32:22,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 52 remaining) [2022-11-16 12:32:22,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 52 remaining) [2022-11-16 12:32:22,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 52 remaining) [2022-11-16 12:32:22,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 52 remaining) [2022-11-16 12:32:22,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 52 remaining) [2022-11-16 12:32:22,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 52 remaining) [2022-11-16 12:32:22,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 52 remaining) [2022-11-16 12:32:22,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 52 remaining) [2022-11-16 12:32:22,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 52 remaining) [2022-11-16 12:32:22,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 52 remaining) [2022-11-16 12:32:22,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 52 remaining) [2022-11-16 12:32:22,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 52 remaining) [2022-11-16 12:32:22,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 52 remaining) [2022-11-16 12:32:22,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 52 remaining) [2022-11-16 12:32:22,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 52 remaining) [2022-11-16 12:32:22,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 52 remaining) [2022-11-16 12:32:22,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 52 remaining) [2022-11-16 12:32:22,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 52 remaining) [2022-11-16 12:32:22,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 52 remaining) [2022-11-16 12:32:22,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 52 remaining) [2022-11-16 12:32:22,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 52 remaining) [2022-11-16 12:32:22,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 52 remaining) [2022-11-16 12:32:22,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:32:22,520 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:22,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:32:22,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:32:22,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:32:22 BasicIcfg [2022-11-16 12:32:22,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:32:22,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:32:22,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:32:22,579 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:32:22,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:26" (3/4) ... [2022-11-16 12:32:22,581 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:32:22,637 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:32:22,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:32:22,638 INFO L158 Benchmark]: Toolchain (without parser) took 237693.63ms. Allocated memory was 102.8MB in the beginning and 291.5MB in the end (delta: 188.7MB). Free memory was 67.7MB in the beginning and 227.7MB in the end (delta: -160.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,638 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:32:22,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 895.40ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 50.4MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.31ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 50.4MB in the beginning and 103.6MB in the end (delta: -53.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,639 INFO L158 Benchmark]: Boogie Preprocessor took 35.18ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 102.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,640 INFO L158 Benchmark]: RCFGBuilder took 906.10ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 77.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,640 INFO L158 Benchmark]: TraceAbstraction took 235696.01ms. Allocated memory was 127.9MB in the beginning and 291.5MB in the end (delta: 163.6MB). Free memory was 76.3MB in the beginning and 231.9MB in the end (delta: -155.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,641 INFO L158 Benchmark]: Witness Printer took 58.44ms. Allocated memory is still 291.5MB. Free memory was 231.9MB in the beginning and 227.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:32:22,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 895.40ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 50.4MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.31ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 50.4MB in the beginning and 103.6MB in the end (delta: -53.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.18ms. Allocated memory is still 127.9MB. Free memory was 103.6MB in the beginning and 102.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 906.10ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 77.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 235696.01ms. Allocated memory was 127.9MB in the beginning and 291.5MB in the end (delta: 163.6MB). Free memory was 76.3MB in the beginning and 231.9MB in the end (delta: -155.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 58.44ms. Allocated memory is still 291.5MB. Free memory was 231.9MB in the beginning and 227.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 225.2s, 190 PlacesBefore, 63 PlacesAfterwards, 188 TransitionsBefore, 59 TransitionsAfterwards, 3136 CoEnabledTransitionPairs, 8 FixpointIterations, 158 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 246 TotalNumberOfCompositions, 11482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4992, independent: 4528, independent conditional: 0, independent unconditional: 4528, dependent: 464, dependent conditional: 0, dependent unconditional: 464, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2248, independent: 2161, independent conditional: 0, independent unconditional: 2161, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2248, independent: 2080, independent conditional: 0, independent unconditional: 2080, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 168, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 507, independent: 141, independent conditional: 0, independent unconditional: 141, dependent: 366, dependent conditional: 0, dependent unconditional: 366, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4992, independent: 2367, independent conditional: 0, independent unconditional: 2367, dependent: 377, dependent conditional: 0, dependent unconditional: 377, unknown: 2248, unknown conditional: 0, unknown unconditional: 2248] , Statistics on independence cache: Total cache size (in pairs): 311, Positive cache size: 269, Positive conditional cache size: 0, Positive unconditional cache size: 269, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1243] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1244] 0 struct s *slot[10]; [L1254] 0 int j = __VERIFIER_nondet_int(); [L1255] CALL 0 assume_abort_if_not(0 <= j && j < 10) [L11] COND FALSE 0 !(!cond) [L1255] RET 0 assume_abort_if_not(0 <= j && j < 10) [L1256] 0 pthread_t t1; [L1257] 0 struct s *p; [L1258] CALL, EXPR 0 new(1) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1258] RET, EXPR 0 new(1) [L1258] 0 slot[j] = new(1) [L1259] CALL, EXPR 0 new(2) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1259] RET, EXPR 0 new(2) [L1259] EXPR 0 slot[j] [L1259] CALL 0 list_add(new(2), slot[j]) [L1239] EXPR 0 list->next [L1239] 0 struct s *temp = list->next; [L1240] 0 list->next = node [L1241] 0 node->next = temp [L1259] RET 0 list_add(new(2), slot[j]) [L1260] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [j=5, mutex={2:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, slot={3:0}, t1={13:0}] [L1246] 1 int i = __VERIFIER_nondet_int(); [L1247] CALL 1 assume_abort_if_not(0 <= i && i < 10) [L11] COND FALSE 1 !(!cond) [L1247] RET 1 assume_abort_if_not(0 <= i && i < 10) [L1249] CALL, EXPR 1 new(3) [L1233] 1 struct s *p = malloc(sizeof(struct s)); VAL [\old(x)=3, \old(x)=2, \result={6:0}, malloc(sizeof(struct s))={11:0}, mutex={2:0}, p={6:0}, p={11:0}, slot={3:0}, x=3, x=2] [L1234] 1 p->datum = x VAL [\old(x)=3, \old(x)=2, \result={6:0}, mutex={2:0}, p={6:0}, p={11:0}, slot={3:0}, x=3, x=2] [L1235] 1 p->next = ((void *)0) [L1236] 1 return p; [L1249] RET, EXPR 1 new(3) [L1249] EXPR 1 slot[i] [L1249] CALL 1 list_add(new(3), slot[i]) [L1239] 1 list->next - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1260]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 244 locations, 52 error locations. Started 1 CEGAR loops. OverallTime: 235.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 225.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 524 IncrementalHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 33 mSDtfsCounter, 524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:32:22,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8607edf8-e753-416c-b89f-37a7f3e0d62d/bin/uautomizer-tPACEb0tL8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)