./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:27:39,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:27:39,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:27:39,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:27:39,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:27:39,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:27:39,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:27:39,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:27:39,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:27:39,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:27:39,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:27:39,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:27:39,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:27:39,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:27:39,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:27:39,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:27:39,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:27:39,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:27:39,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:27:39,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:27:39,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:27:39,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:27:39,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:27:39,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:27:40,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:27:40,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:27:40,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:27:40,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:27:40,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:27:40,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:27:40,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:27:40,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:27:40,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:27:40,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:27:40,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:27:40,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:27:40,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:27:40,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:27:40,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:27:40,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:27:40,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:27:40,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 15:27:40,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:27:40,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:27:40,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:27:40,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:27:40,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:27:40,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:27:40,066 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:27:40,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:27:40,067 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:27:40,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:27:40,068 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:27:40,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:27:40,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:27:40,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:27:40,069 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:27:40,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:27:40,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:27:40,070 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:27:40,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:27:40,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:27:40,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:27:40,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:27:40,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:27:40,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:27:40,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:27:40,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:27:40,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:27:40,073 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:27:40,073 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:27:40,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:27:40,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:27:40,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:27:40,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:27:40,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:27:40,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:27:40,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:27:40,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:27:40,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:27:40,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:27:40,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:27:40,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:27:40,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:27:40,077 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_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 [2022-11-23 15:27:40,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:27:40,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:27:40,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:27:40,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:27:40,467 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:27:40,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-11-23 15:27:43,465 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:27:43,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:27:43,793 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-11-23 15:27:43,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/data/e0aca0d8b/bdfa368ed56d4e52bb12bcefdc9a692a/FLAGd6b39762d [2022-11-23 15:27:43,840 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/data/e0aca0d8b/bdfa368ed56d4e52bb12bcefdc9a692a [2022-11-23 15:27:43,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:27:43,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:27:43,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:27:43,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:27:43,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:27:43,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:27:43" (1/1) ... [2022-11-23 15:27:43,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260b96f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:43, skipping insertion in model container [2022-11-23 15:27:43,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:27:43" (1/1) ... [2022-11-23 15:27:43,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:27:43,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:27:44,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:27:44,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:27:44,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:27:44,607 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:27:44,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44 WrapperNode [2022-11-23 15:27:44,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:27:44,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:27:44,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:27:44,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:27:44,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,661 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-11-23 15:27:44,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:27:44,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:27:44,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:27:44,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:27:44,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:27:44,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:27:44,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:27:44,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:27:44,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (1/1) ... [2022-11-23 15:27:44,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:27:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:27:44,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:27:44,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:27:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:27:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:27:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:27:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:27:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 15:27:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:27:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 15:27:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 15:27:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:27:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:27:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:27:44,790 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:27:45,018 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:27:45,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:27:45,254 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:27:45,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:27:45,262 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:27:45,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:45 BoogieIcfgContainer [2022-11-23 15:27:45,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:27:45,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:27:45,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:27:45,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:27:45,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:27:43" (1/3) ... [2022-11-23 15:27:45,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92dbefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:45, skipping insertion in model container [2022-11-23 15:27:45,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:44" (2/3) ... [2022-11-23 15:27:45,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92dbefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:45, skipping insertion in model container [2022-11-23 15:27:45,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:45" (3/3) ... [2022-11-23 15:27:45,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2022-11-23 15:27:45,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:27:45,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-23 15:27:45,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:27:45,378 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 15:27:45,416 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:27:45,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 76 transitions, 160 flow [2022-11-23 15:27:45,437 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 76 transitions, 160 flow [2022-11-23 15:27:45,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 160 flow [2022-11-23 15:27:45,487 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2022-11-23 15:27:45,487 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 15:27:45,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 0/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-11-23 15:27:45,492 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2022-11-23 15:27:48,968 INFO L134 LiptonReduction]: Checked pairs total: 2099 [2022-11-23 15:27:48,968 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-11-23 15:27:48,976 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 27 transitions, 62 flow [2022-11-23 15:27:48,996 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 77 states have (on average 2.6103896103896105) internal successors, (201), 113 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:27:49,021 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;@7e2ee659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:27:49,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 15:27:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 77 states have (on average 2.6103896103896105) internal successors, (201), 113 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-23 15:27:49,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:49,029 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-23 15:27:49,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash 283, now seen corresponding path program 1 times [2022-11-23 15:27:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:49,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202747773] [2022-11-23 15:27:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:49,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:49,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202747773] [2022-11-23 15:27:49,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202747773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:49,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:49,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 15:27:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643279492] [2022-11-23 15:27:49,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:49,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:27:49,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:27:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:27:49,218 INFO L87 Difference]: Start difference. First operand has 114 states, 77 states have (on average 2.6103896103896105) internal successors, (201), 113 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-23 15:27:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:49,272 INFO L93 Difference]: Finished difference Result 74 states and 127 transitions. [2022-11-23 15:27:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:27:49,275 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 [2022-11-23 15:27:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:49,284 INFO L225 Difference]: With dead ends: 74 [2022-11-23 15:27:49,285 INFO L226 Difference]: Without dead ends: 74 [2022-11-23 15:27:49,286 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 [2022-11-23 15:27:49,289 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:49,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-23 15:27:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-23 15:27:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 2.152542372881356) internal successors, (127), 73 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 127 transitions. [2022-11-23 15:27:49,332 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 127 transitions. Word has length 1 [2022-11-23 15:27:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:49,332 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 127 transitions. [2022-11-23 15:27:49,333 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) [2022-11-23 15:27:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 127 transitions. [2022-11-23 15:27:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:27:49,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:49,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:27:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:27:49,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 278329, now seen corresponding path program 1 times [2022-11-23 15:27:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:49,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399669657] [2022-11-23 15:27:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:49,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:49,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399669657] [2022-11-23 15:27:49,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399669657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:49,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:49,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:27:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196691295] [2022-11-23 15:27:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:49,698 INFO L87 Difference]: Start difference. First operand 74 states and 127 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) [2022-11-23 15:27:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:49,743 INFO L93 Difference]: Finished difference Result 58 states and 97 transitions. [2022-11-23 15:27:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:49,749 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 [2022-11-23 15:27:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:49,752 INFO L225 Difference]: With dead ends: 58 [2022-11-23 15:27:49,752 INFO L226 Difference]: Without dead ends: 58 [2022-11-23 15:27:49,753 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 [2022-11-23 15:27:49,754 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:49,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-23 15:27:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-23 15:27:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.94) internal successors, (97), 57 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 97 transitions. [2022-11-23 15:27:49,772 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 97 transitions. Word has length 3 [2022-11-23 15:27:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:49,773 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 97 transitions. [2022-11-23 15:27:49,773 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) [2022-11-23 15:27:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 97 transitions. [2022-11-23 15:27:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:27:49,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:49,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:27:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:27:49,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash 278330, now seen corresponding path program 1 times [2022-11-23 15:27:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:49,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704531801] [2022-11-23 15:27:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:49,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704531801] [2022-11-23 15:27:49,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704531801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:49,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:49,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:27:49,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566317250] [2022-11-23 15:27:49,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:49,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:49,863 INFO L87 Difference]: Start difference. First operand 58 states and 97 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) [2022-11-23 15:27:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:49,887 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2022-11-23 15:27:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:49,888 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 [2022-11-23 15:27:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:49,889 INFO L225 Difference]: With dead ends: 44 [2022-11-23 15:27:49,889 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 15:27:49,889 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 [2022-11-23 15:27:49,890 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:49,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 15:27:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-23 15:27:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 71 transitions. [2022-11-23 15:27:49,896 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 71 transitions. Word has length 3 [2022-11-23 15:27:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:49,897 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 71 transitions. [2022-11-23 15:27:49,897 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) [2022-11-23 15:27:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 71 transitions. [2022-11-23 15:27:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:27:49,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:49,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:27:49,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:27:49,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash -297516930, now seen corresponding path program 1 times [2022-11-23 15:27:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:49,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400625418] [2022-11-23 15:27:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:49,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400625418] [2022-11-23 15:27:49,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400625418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:49,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:49,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:27:49,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847366154] [2022-11-23 15:27:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:49,967 INFO L87 Difference]: Start difference. First operand 44 states and 71 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:49,988 INFO L93 Difference]: Finished difference Result 39 states and 62 transitions. [2022-11-23 15:27:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-23 15:27:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:49,989 INFO L225 Difference]: With dead ends: 39 [2022-11-23 15:27:49,989 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 15:27:49,989 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 [2022-11-23 15:27:49,990 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:49,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 15:27:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-23 15:27:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2022-11-23 15:27:49,995 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 6 [2022-11-23 15:27:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:49,996 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2022-11-23 15:27:49,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2022-11-23 15:27:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:27:49,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:49,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:27:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:27:49,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -297516929, now seen corresponding path program 1 times [2022-11-23 15:27:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:49,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43281345] [2022-11-23 15:27:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:49,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:50,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:50,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43281345] [2022-11-23 15:27:50,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43281345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:50,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:50,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:27:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112826702] [2022-11-23 15:27:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:50,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:50,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:50,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:50,074 INFO L87 Difference]: Start difference. First operand 39 states and 62 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:50,093 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2022-11-23 15:27:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:50,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-23 15:27:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:50,094 INFO L225 Difference]: With dead ends: 34 [2022-11-23 15:27:50,095 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 15:27:50,095 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 [2022-11-23 15:27:50,096 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 15:27:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 15:27:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2022-11-23 15:27:50,099 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 6 [2022-11-23 15:27:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:50,100 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2022-11-23 15:27:50,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2022-11-23 15:27:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:27:50,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:50,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:27:50,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:27:50,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1603036043, now seen corresponding path program 1 times [2022-11-23 15:27:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:50,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810007782] [2022-11-23 15:27:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:50,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:50,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810007782] [2022-11-23 15:27:50,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810007782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:50,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:50,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:27:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752313877] [2022-11-23 15:27:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:50,239 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:50,269 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-23 15:27:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-23 15:27:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:50,272 INFO L225 Difference]: With dead ends: 25 [2022-11-23 15:27:50,272 INFO L226 Difference]: Without dead ends: 25 [2022-11-23 15:27:50,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:50,275 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:50,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-23 15:27:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-23 15:27:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-23 15:27:50,285 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 13 [2022-11-23 15:27:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:50,285 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-23 15:27:50,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-23 15:27:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:27:50,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:50,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:27:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:27:50,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-11-23 15:27:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1154712143, now seen corresponding path program 2 times [2022-11-23 15:27:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:50,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92724609] [2022-11-23 15:27:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:50,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:50,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92724609] [2022-11-23 15:27:50,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92724609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:50,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:50,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:27:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616297919] [2022-11-23 15:27:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:50,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:50,409 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:50,429 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-23 15:27:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-11-23 15:27:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:50,431 INFO L225 Difference]: With dead ends: 24 [2022-11-23 15:27:50,431 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:27:50,431 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 [2022-11-23 15:27:50,432 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:27:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:27:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:27:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:27:50,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-23 15:27:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:50,436 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:27:50,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:50,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:27:50,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:27:50,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-11-23 15:27:50,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2022-11-23 15:27:50,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-11-23 15:27:50,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-11-23 15:27:50,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-11-23 15:27:50,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-11-23 15:27:50,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-11-23 15:27:50,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-11-23 15:27:50,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2022-11-23 15:27:50,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-23 15:27:50,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-11-23 15:27:50,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-11-23 15:27:50,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-11-23 15:27:50,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-11-23 15:27:50,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-11-23 15:27:50,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-11-23 15:27:50,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-11-23 15:27:50,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2022-11-23 15:27:50,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:27:50,452 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-23 15:27:50,457 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 15:27:50,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:27:50,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:27:50 BasicIcfg [2022-11-23 15:27:50,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:27:50,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:27:50,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:27:50,462 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:27:50,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:45" (3/4) ... [2022-11-23 15:27:50,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:27:50,472 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-23 15:27:50,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:27:50,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 15:27:50,479 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:27:50,516 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:27:50,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:27:50,517 INFO L158 Benchmark]: Toolchain (without parser) took 6670.19ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 154.8MB in the beginning and 94.6MB in the end (delta: 60.3MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2022-11-23 15:27:50,518 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:27:50,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 758.43ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 135.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:27:50,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.29ms. Allocated memory is still 186.6MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:27:50,519 INFO L158 Benchmark]: Boogie Preprocessor took 27.35ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 131.9MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:27:50,519 INFO L158 Benchmark]: RCFGBuilder took 574.57ms. Allocated memory is still 186.6MB. Free memory was 131.9MB in the beginning and 117.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:27:50,520 INFO L158 Benchmark]: TraceAbstraction took 5193.05ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 116.2MB in the beginning and 97.7MB in the end (delta: 18.5MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2022-11-23 15:27:50,520 INFO L158 Benchmark]: Witness Printer took 55.25ms. Allocated memory is still 224.4MB. Free memory was 97.7MB in the beginning and 94.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:27:50,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 758.43ms. Allocated memory is still 186.6MB. Free memory was 154.8MB in the beginning and 135.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.29ms. Allocated memory is still 186.6MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.35ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 131.9MB in the end (delta: 989.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.57ms. Allocated memory is still 186.6MB. Free memory was 131.9MB in the beginning and 117.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5193.05ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 116.2MB in the beginning and 97.7MB in the end (delta: 18.5MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Witness Printer took 55.25ms. Allocated memory is still 224.4MB. Free memory was 97.7MB in the beginning and 94.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 80 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 27 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 86 TotalNumberOfCompositions, 2099 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1315, independent: 1157, independent conditional: 0, independent unconditional: 1157, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 424, independent: 393, independent conditional: 0, independent unconditional: 393, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 424, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 234, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1315, independent: 764, independent conditional: 0, independent unconditional: 764, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 424, unknown conditional: 0, unknown unconditional: 424] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 15:27:50,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c23e2df-f7c8-4eae-a555-e4a5acde19b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE