./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:52:58,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:58,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:58,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:58,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:58,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:58,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:58,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:58,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:58,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:58,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:58,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:58,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:58,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:58,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:58,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:58,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:58,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:58,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:58,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:58,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:58,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:58,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:58,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:58,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:58,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:58,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:58,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:58,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:58,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:58,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:58,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:58,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:58,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:58,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:58,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:58,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:58,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:58,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:58,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:58,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:58,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 08:52:58,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:58,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:58,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:58,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:58,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:58,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:58,992 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:58,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:58,992 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:58,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:58,993 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:52:58,993 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:52:58,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:52:58,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:52:58,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:58,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:52:58,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:52:58,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:52:58,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:52:58,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:58,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:58,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:52:58,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:58,997 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_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2022-12-14 08:52:59,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:59,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:59,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:59,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:59,186 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:59,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2022-12-14 08:53:01,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:53:01,991 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:53:01,992 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/sv-benchmarks/c/memsafety/lockfree-3.3.i [2022-12-14 08:53:02,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/91a7769c6/0b7526943e494f208b5ba50a6f8dc8fc/FLAG98d1d96f0 [2022-12-14 08:53:02,015 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/91a7769c6/0b7526943e494f208b5ba50a6f8dc8fc [2022-12-14 08:53:02,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:53:02,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:53:02,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:53:02,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:53:02,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:53:02,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29de3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02, skipping insertion in model container [2022-12-14 08:53:02,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:53:02,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:53:02,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:53:02,242 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:53:02,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:53:02,288 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:53:02,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02 WrapperNode [2022-12-14 08:53:02,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:53:02,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:53:02,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:53:02,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:53:02,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,319 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-12-14 08:53:02,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:53:02,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:53:02,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:53:02,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:53:02,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:53:02,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:53:02,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:53:02,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:53:02,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (1/1) ... [2022-12-14 08:53:02,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:53:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:02,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:53:02,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:53:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:53:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:53:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:53:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:53:02,480 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:53:02,482 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:53:02,714 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:53:02,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:53:02,776 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:53:02,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:02 BoogieIcfgContainer [2022-12-14 08:53:02,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:53:02,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:53:02,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:53:02,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:53:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:53:02" (1/3) ... [2022-12-14 08:53:02,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:02, skipping insertion in model container [2022-12-14 08:53:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:02" (2/3) ... [2022-12-14 08:53:02,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0a5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:02, skipping insertion in model container [2022-12-14 08:53:02,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:02" (3/3) ... [2022-12-14 08:53:02,788 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2022-12-14 08:53:02,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:53:02,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-14 08:53:02,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:53:02,845 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;@6477f5a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:53:02,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-14 08:53:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:53:02,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:02,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:53:02,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 5940810, now seen corresponding path program 1 times [2022-12-14 08:53:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:02,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491076429] [2022-12-14 08:53:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:02,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:02,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491076429] [2022-12-14 08:53:02,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491076429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:02,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:02,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233591446] [2022-12-14 08:53:03,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:53:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:53:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:53:03,038 INFO L87 Difference]: Start difference. First operand has 49 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 48 states have internal predecessors, (61), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,074 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-12-14 08:53:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:53:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 08:53:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,083 INFO L225 Difference]: With dead ends: 49 [2022-12-14 08:53:03,083 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 08:53:03,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:53:03,086 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 08:53:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-12-14 08:53:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 2.107142857142857) internal successors, (59), 47 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2022-12-14 08:53:03,112 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 4 [2022-12-14 08:53:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,112 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2022-12-14 08:53:03,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2022-12-14 08:53:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:53:03,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:53:03,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:53:03,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 185350861, now seen corresponding path program 1 times [2022-12-14 08:53:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469800879] [2022-12-14 08:53:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469800879] [2022-12-14 08:53:03,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469800879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 08:53:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250583967] [2022-12-14 08:53:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,183 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,257 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2022-12-14 08:53:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:03,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 08:53:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,259 INFO L225 Difference]: With dead ends: 88 [2022-12-14 08:53:03,259 INFO L226 Difference]: Without dead ends: 87 [2022-12-14 08:53:03,260 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 [2022-12-14 08:53:03,261 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 69 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-14 08:53:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 68. [2022-12-14 08:53:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2022-12-14 08:53:03,269 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 5 [2022-12-14 08:53:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,270 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2022-12-14 08:53:03,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2022-12-14 08:53:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:53:03,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:53:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:53:03,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash 185349669, now seen corresponding path program 1 times [2022-12-14 08:53:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898598622] [2022-12-14 08:53:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898598622] [2022-12-14 08:53:03,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898598622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952408442] [2022-12-14 08:53:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,319 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,366 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2022-12-14 08:53:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 08:53:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,367 INFO L225 Difference]: With dead ends: 124 [2022-12-14 08:53:03,368 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 08:53:03,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,369 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 45 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 08:53:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2022-12-14 08:53:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 104 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 174 transitions. [2022-12-14 08:53:03,379 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 174 transitions. Word has length 5 [2022-12-14 08:53:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,379 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 174 transitions. [2022-12-14 08:53:03,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 174 transitions. [2022-12-14 08:53:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:03,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:53:03,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1450814034, now seen corresponding path program 1 times [2022-12-14 08:53:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905024311] [2022-12-14 08:53:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905024311] [2022-12-14 08:53:03,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905024311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174957215] [2022-12-14 08:53:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,452 INFO L87 Difference]: Start difference. First operand 105 states and 174 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,529 INFO L93 Difference]: Finished difference Result 158 states and 247 transitions. [2022-12-14 08:53:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 08:53:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,530 INFO L225 Difference]: With dead ends: 158 [2022-12-14 08:53:03,530 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 08:53:03,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,532 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 48 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 08:53:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2022-12-14 08:53:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.9421487603305785) internal successors, (235), 138 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 235 transitions. [2022-12-14 08:53:03,541 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 235 transitions. Word has length 6 [2022-12-14 08:53:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 235 transitions. [2022-12-14 08:53:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 235 transitions. [2022-12-14 08:53:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:03,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:53:03,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1450814035, now seen corresponding path program 1 times [2022-12-14 08:53:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585715227] [2022-12-14 08:53:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585715227] [2022-12-14 08:53:03,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585715227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:03,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868909656] [2022-12-14 08:53:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,615 INFO L87 Difference]: Start difference. First operand 139 states and 235 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,667 INFO L93 Difference]: Finished difference Result 153 states and 238 transitions. [2022-12-14 08:53:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:03,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 08:53:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,669 INFO L225 Difference]: With dead ends: 153 [2022-12-14 08:53:03,669 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 08:53:03,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:03,670 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 47 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 102 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 08:53:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 137. [2022-12-14 08:53:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.8760330578512396) internal successors, (227), 136 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 227 transitions. [2022-12-14 08:53:03,679 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 227 transitions. Word has length 6 [2022-12-14 08:53:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,680 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 227 transitions. [2022-12-14 08:53:03,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 227 transitions. [2022-12-14 08:53:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:53:03,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:53:03,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2025570098, now seen corresponding path program 1 times [2022-12-14 08:53:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644067440] [2022-12-14 08:53:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644067440] [2022-12-14 08:53:03,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644067440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:53:03,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138023047] [2022-12-14 08:53:03,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:53:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:53:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:03,741 INFO L87 Difference]: Start difference. First operand 137 states and 227 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,820 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2022-12-14 08:53:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:53:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-12-14 08:53:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,822 INFO L225 Difference]: With dead ends: 276 [2022-12-14 08:53:03,822 INFO L226 Difference]: Without dead ends: 276 [2022-12-14 08:53:03,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:53:03,823 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 114 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 296 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-12-14 08:53:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 167. [2022-12-14 08:53:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 151 states have (on average 1.8543046357615893) internal successors, (280), 166 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 280 transitions. [2022-12-14 08:53:03,835 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 280 transitions. Word has length 7 [2022-12-14 08:53:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,835 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 280 transitions. [2022-12-14 08:53:03,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 280 transitions. [2022-12-14 08:53:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:53:03,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:53:03,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1580480621, now seen corresponding path program 1 times [2022-12-14 08:53:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8575263] [2022-12-14 08:53:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:03,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8575263] [2022-12-14 08:53:03,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8575263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:03,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:03,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:53:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051215440] [2022-12-14 08:53:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:03,876 INFO L87 Difference]: Start difference. First operand 167 states and 280 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,917 INFO L93 Difference]: Finished difference Result 385 states and 587 transitions. [2022-12-14 08:53:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:53:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-12-14 08:53:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,919 INFO L225 Difference]: With dead ends: 385 [2022-12-14 08:53:03,919 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 08:53:03,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:03,920 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 86 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 08:53:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 257. [2022-12-14 08:53:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 241 states have (on average 1.7468879668049793) internal successors, (421), 256 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 421 transitions. [2022-12-14 08:53:03,932 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 421 transitions. Word has length 8 [2022-12-14 08:53:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,932 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 421 transitions. [2022-12-14 08:53:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 421 transitions. [2022-12-14 08:53:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:53:03,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,933 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:53:03,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1408785848, now seen corresponding path program 1 times [2022-12-14 08:53:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:03,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299279820] [2022-12-14 08:53:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:04,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:04,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299279820] [2022-12-14 08:53:04,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299279820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:53:04,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527014585] [2022-12-14 08:53:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:04,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:04,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:04,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:53:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:04,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:04,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:04,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:04,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527014585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:04,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163596887] [2022-12-14 08:53:04,194 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 08:53:04,194 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:53:04,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:53:04,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:53:04,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:53:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 08:53:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 08:53:04,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 08:53:04,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 08:53:04,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:53:04,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:53:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-12-14 08:53:04,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 08:53:04,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 08:53:04,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 08:53:04,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-12-14 08:53:04,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:53:04,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:53:04,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:04,996 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: NNF required for sound overapproximation. at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierOverapproximator.convert(QuantifierOverapproximator.java:59) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:158) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:86) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:319) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierOverapproximator.apply(QuantifierOverapproximator.java:85) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.Context.buildCriticalConstraintForConDis(Context.java:227) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.Context.buildCriticalConstraintForConDis(Context.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.Context.constructChildContextForConDis(Context.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.constructContextForApplicationTerm(QuantifierPushTermWalker.java:102) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.constructContextForApplicationTerm(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:167) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 08:53:05,000 INFO L158 Benchmark]: Toolchain (without parser) took 2980.78ms. Allocated memory was 117.4MB in the beginning and 186.6MB in the end (delta: 69.2MB). Free memory was 86.5MB in the beginning and 122.9MB in the end (delta: -36.4MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,000 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:53:05,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.81ms. Allocated memory is still 117.4MB. Free memory was 86.2MB in the beginning and 69.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,001 INFO L158 Benchmark]: Boogie Preprocessor took 20.19ms. Allocated memory is still 117.4MB. Free memory was 67.0MB in the beginning and 65.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,001 INFO L158 Benchmark]: RCFGBuilder took 439.16ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 65.2MB in the beginning and 120.6MB in the end (delta: -55.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,002 INFO L158 Benchmark]: TraceAbstraction took 2217.03ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 119.9MB in the beginning and 122.9MB in the end (delta: -3.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-12-14 08:53:05,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.81ms. Allocated memory is still 117.4MB. Free memory was 86.2MB in the beginning and 69.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.19ms. Allocated memory is still 117.4MB. Free memory was 67.0MB in the beginning and 65.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.16ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 65.2MB in the beginning and 120.6MB in the end (delta: -55.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2217.03ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 119.9MB in the beginning and 122.9MB in the end (delta: -3.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: NNF required for sound overapproximation. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: NNF required for sound overapproximation.: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierOverapproximator.convert(QuantifierOverapproximator.java:59) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 08:53:05,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:53:06,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:53:06,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:53:06,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:53:06,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:53:06,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:53:06,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:53:06,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:53:06,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:53:06,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:53:06,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:53:06,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:53:06,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:53:06,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:53:06,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:53:06,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:53:06,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:53:06,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:53:06,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:53:06,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:53:06,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:53:06,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:53:06,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:53:06,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:53:06,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:53:06,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:53:06,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:53:06,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:53:06,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:53:06,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:53:06,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:53:06,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:53:06,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:53:06,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:53:06,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:53:06,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:53:06,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:53:06,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:53:06,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:53:06,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:53:06,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:53:06,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 08:53:06,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:53:06,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:53:06,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:53:06,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:53:06,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:53:06,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:53:06,763 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:53:06,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:53:06,764 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:53:06,764 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:53:06,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:53:06,764 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:53:06,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:53:06,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:53:06,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:53:06,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:53:06,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:53:06,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:53:06,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:53:06,767 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:53:06,767 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:53:06,767 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:53:06,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:53:06,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:53:06,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:53:06,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:53:06,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:53:06,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:53:06,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:53:06,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:53:06,769 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:53:06,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:06,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:53:06,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:53:06,769 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2022-12-14 08:53:07,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:53:07,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:53:07,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:53:07,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:53:07,027 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:53:07,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2022-12-14 08:53:09,538 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:53:09,712 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:53:09,712 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/sv-benchmarks/c/memsafety/lockfree-3.3.i [2022-12-14 08:53:09,720 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/7ede5ead9/0311bab57fcf4963b32f7fc909df45ac/FLAGd358db968 [2022-12-14 08:53:09,731 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/data/7ede5ead9/0311bab57fcf4963b32f7fc909df45ac [2022-12-14 08:53:09,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:53:09,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:53:09,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:53:09,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:53:09,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:53:09,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:53:09" (1/1) ... [2022-12-14 08:53:09,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb3b1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:09, skipping insertion in model container [2022-12-14 08:53:09,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:53:09" (1/1) ... [2022-12-14 08:53:09,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:53:09,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:53:09,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:53:09,978 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:53:10,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:53:10,024 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:53:10,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10 WrapperNode [2022-12-14 08:53:10,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:53:10,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:53:10,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:53:10,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:53:10,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,057 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-12-14 08:53:10,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:53:10,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:53:10,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:53:10,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:53:10,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:53:10,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:53:10,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:53:10,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:53:10,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (1/1) ... [2022-12-14 08:53:10,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:53:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:10,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:53:10,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:53:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 08:53:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:53:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:53:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:53:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:53:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:53:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 08:53:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:53:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:53:10,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:53:10,233 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:53:10,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:53:10,547 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:53:10,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:53:10,552 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:53:10,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:10 BoogieIcfgContainer [2022-12-14 08:53:10,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:53:10,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:53:10,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:53:10,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:53:10,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:53:09" (1/3) ... [2022-12-14 08:53:10,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7510fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:10, skipping insertion in model container [2022-12-14 08:53:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:53:10" (2/3) ... [2022-12-14 08:53:10,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7510fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:10, skipping insertion in model container [2022-12-14 08:53:10,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:10" (3/3) ... [2022-12-14 08:53:10,560 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2022-12-14 08:53:10,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:53:10,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-14 08:53:10,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:53:10,610 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;@3f41d211, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:53:10,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-14 08:53:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:53:10,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:10,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:53:10,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 28701640, now seen corresponding path program 1 times [2022-12-14 08:53:10,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:10,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463302575] [2022-12-14 08:53:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:10,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:10,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:10,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:10,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 08:53:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:10,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:53:10,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:10,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:10,749 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:10,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463302575] [2022-12-14 08:53:10,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463302575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:10,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:10,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949255729] [2022-12-14 08:53:10,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:10,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:10,777 INFO L87 Difference]: Start difference. First operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:10,838 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2022-12-14 08:53:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:10,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 08:53:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:10,847 INFO L225 Difference]: With dead ends: 107 [2022-12-14 08:53:10,847 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 08:53:10,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:10,857 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 134 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 [2022-12-14 08:53:10,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 08:53:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2022-12-14 08:53:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2022-12-14 08:53:10,895 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 5 [2022-12-14 08:53:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:10,896 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2022-12-14 08:53:10,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2022-12-14 08:53:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:10,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:10,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:10,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:11,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:11,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 889749439, now seen corresponding path program 1 times [2022-12-14 08:53:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:11,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227112432] [2022-12-14 08:53:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:11,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:11,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:11,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 08:53:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:11,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:53:11,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:11,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:11,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:11,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227112432] [2022-12-14 08:53:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227112432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:11,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554313175] [2022-12-14 08:53:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:11,304 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:11,431 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2022-12-14 08:53:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 08:53:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:11,433 INFO L225 Difference]: With dead ends: 163 [2022-12-14 08:53:11,433 INFO L226 Difference]: Without dead ends: 160 [2022-12-14 08:53:11,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:11,434 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 62 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:11,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 116 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-14 08:53:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 140. [2022-12-14 08:53:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.9083333333333334) internal successors, (229), 139 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 229 transitions. [2022-12-14 08:53:11,448 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 229 transitions. Word has length 6 [2022-12-14 08:53:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:11,449 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 229 transitions. [2022-12-14 08:53:11,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 229 transitions. [2022-12-14 08:53:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:11,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:11,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:11,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 08:53:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:11,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash 889692424, now seen corresponding path program 1 times [2022-12-14 08:53:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:11,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015645342] [2022-12-14 08:53:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:11,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:11,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 08:53:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:11,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:53:11,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:11,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:53:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:11,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:11,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015645342] [2022-12-14 08:53:11,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015645342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:11,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:11,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531186659] [2022-12-14 08:53:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:11,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:11,888 INFO L87 Difference]: Start difference. First operand 140 states and 229 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:12,007 INFO L93 Difference]: Finished difference Result 211 states and 330 transitions. [2022-12-14 08:53:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 08:53:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:12,009 INFO L225 Difference]: With dead ends: 211 [2022-12-14 08:53:12,009 INFO L226 Difference]: Without dead ends: 211 [2022-12-14 08:53:12,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:12,010 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 64 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 163 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-14 08:53:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2022-12-14 08:53:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 172 states have (on average 1.8372093023255813) internal successors, (316), 189 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 316 transitions. [2022-12-14 08:53:12,026 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 316 transitions. Word has length 6 [2022-12-14 08:53:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:12,027 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 316 transitions. [2022-12-14 08:53:12,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 316 transitions. [2022-12-14 08:53:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:12,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:12,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:12,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 08:53:12,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:12,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 889692425, now seen corresponding path program 1 times [2022-12-14 08:53:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:12,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094212863] [2022-12-14 08:53:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:12,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:12,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:12,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 08:53:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:12,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:53:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:12,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:12,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:12,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094212863] [2022-12-14 08:53:12,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094212863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:12,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:12,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:53:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347657475] [2022-12-14 08:53:12,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:12,389 INFO L87 Difference]: Start difference. First operand 190 states and 316 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:12,502 INFO L93 Difference]: Finished difference Result 206 states and 321 transitions. [2022-12-14 08:53:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:53:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-14 08:53:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:12,504 INFO L225 Difference]: With dead ends: 206 [2022-12-14 08:53:12,504 INFO L226 Difference]: Without dead ends: 206 [2022-12-14 08:53:12,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:12,505 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:12,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-14 08:53:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2022-12-14 08:53:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 172 states have (on average 1.7906976744186047) internal successors, (308), 187 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2022-12-14 08:53:12,516 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 6 [2022-12-14 08:53:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:12,517 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2022-12-14 08:53:12,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-14 08:53:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2022-12-14 08:53:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:53:12,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:12,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:12,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 08:53:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:12,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669365, now seen corresponding path program 1 times [2022-12-14 08:53:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:12,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330924360] [2022-12-14 08:53:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:12,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:12,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:12,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:12,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 08:53:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:12,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:12,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:12,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:12,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:12,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330924360] [2022-12-14 08:53:12,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330924360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:12,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:12,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:53:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898091040] [2022-12-14 08:53:12,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:12,870 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:12,907 INFO L93 Difference]: Finished difference Result 211 states and 304 transitions. [2022-12-14 08:53:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:53:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-12-14 08:53:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:12,909 INFO L225 Difference]: With dead ends: 211 [2022-12-14 08:53:12,909 INFO L226 Difference]: Without dead ends: 211 [2022-12-14 08:53:12,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:12,910 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 101 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:12,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 229 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-14 08:53:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 144. [2022-12-14 08:53:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 143 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 229 transitions. [2022-12-14 08:53:12,917 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 229 transitions. Word has length 7 [2022-12-14 08:53:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:12,917 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 229 transitions. [2022-12-14 08:53:12,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 229 transitions. [2022-12-14 08:53:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:53:12,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:12,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:12,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 08:53:13,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:13,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash 347531241, now seen corresponding path program 1 times [2022-12-14 08:53:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896112152] [2022-12-14 08:53:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:13,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:13,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 08:53:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:13,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:13,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:13,254 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896112152] [2022-12-14 08:53:13,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896112152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:13,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:13,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:53:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585046715] [2022-12-14 08:53:13,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:13,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:13,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:13,255 INFO L87 Difference]: Start difference. First operand 144 states and 229 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:13,282 INFO L93 Difference]: Finished difference Result 303 states and 449 transitions. [2022-12-14 08:53:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:53:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-12-14 08:53:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:13,283 INFO L225 Difference]: With dead ends: 303 [2022-12-14 08:53:13,283 INFO L226 Difference]: Without dead ends: 303 [2022-12-14 08:53:13,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:13,284 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 103 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:13,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 221 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-12-14 08:53:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 198. [2022-12-14 08:53:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.6559139784946237) internal successors, (308), 197 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 308 transitions. [2022-12-14 08:53:13,288 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 308 transitions. Word has length 8 [2022-12-14 08:53:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:13,289 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 308 transitions. [2022-12-14 08:53:13,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 308 transitions. [2022-12-14 08:53:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:53:13,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:13,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:13,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 08:53:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:13,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:13,491 INFO L85 PathProgramCache]: Analyzing trace with hash -527615340, now seen corresponding path program 1 times [2022-12-14 08:53:13,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366622827] [2022-12-14 08:53:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:13,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:13,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 08:53:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:13,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,612 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366622827] [2022-12-14 08:53:13,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366622827] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1034805707] [2022-12-14 08:53:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:13,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:13,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:13,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:13,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 08:53:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1034805707] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000474057] [2022-12-14 08:53:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:13,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:13,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:13,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:53:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:53:13,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:13,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000474057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:13,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:13,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2022-12-14 08:53:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960249161] [2022-12-14 08:53:13,809 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:13,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 08:53:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 08:53:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:53:13,810 INFO L87 Difference]: Start difference. First operand 198 states and 308 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:13,961 INFO L93 Difference]: Finished difference Result 911 states and 1342 transitions. [2022-12-14 08:53:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 08:53:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 12 [2022-12-14 08:53:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:13,964 INFO L225 Difference]: With dead ends: 911 [2022-12-14 08:53:13,964 INFO L226 Difference]: Without dead ends: 911 [2022-12-14 08:53:13,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-12-14 08:53:13,965 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 685 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:13,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 979 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-12-14 08:53:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 438. [2022-12-14 08:53:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 426 states have (on average 1.6314553990610328) internal successors, (695), 437 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 695 transitions. [2022-12-14 08:53:13,976 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 695 transitions. Word has length 12 [2022-12-14 08:53:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 695 transitions. [2022-12-14 08:53:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 695 transitions. [2022-12-14 08:53:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:53:13,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:13,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:13,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 08:53:14,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 08:53:14,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:14,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:14,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2027186576, now seen corresponding path program 1 times [2022-12-14 08:53:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:14,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294344587] [2022-12-14 08:53:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:14,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:14,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:14,587 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:14,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 08:53:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:14,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294344587] [2022-12-14 08:53:14,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294344587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1069987579] [2022-12-14 08:53:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:14,687 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:14,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:14,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 08:53:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:14,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:14,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1069987579] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:14,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370261084] [2022-12-14 08:53:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:14,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:14,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:14,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 08:53:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:14,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370261084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:14,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:14,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2022-12-14 08:53:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879418910] [2022-12-14 08:53:14,848 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:14,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:53:14,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:53:14,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:53:14,849 INFO L87 Difference]: Start difference. First operand 438 states and 695 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:14,890 INFO L93 Difference]: Finished difference Result 1016 states and 1557 transitions. [2022-12-14 08:53:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:53:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 12 [2022-12-14 08:53:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:14,894 INFO L225 Difference]: With dead ends: 1016 [2022-12-14 08:53:14,894 INFO L226 Difference]: Without dead ends: 1016 [2022-12-14 08:53:14,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:53:14,895 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 285 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:14,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 298 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-12-14 08:53:14,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 992. [2022-12-14 08:53:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 980 states have (on average 1.5887755102040817) internal successors, (1557), 991 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1557 transitions. [2022-12-14 08:53:14,920 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1557 transitions. Word has length 12 [2022-12-14 08:53:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:14,920 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1557 transitions. [2022-12-14 08:53:14,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1557 transitions. [2022-12-14 08:53:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 08:53:14,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:14,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:14,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 08:53:15,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 08:53:15,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:15,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -480845608, now seen corresponding path program 1 times [2022-12-14 08:53:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737080356] [2022-12-14 08:53:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:15,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:15,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:15,528 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:15,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 08:53:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:15,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:53:15,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:15,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737080356] [2022-12-14 08:53:15,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737080356] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:15,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [760000638] [2022-12-14 08:53:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:15,664 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:15,664 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:15,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-12-14 08:53:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:15,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:53:15,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [760000638] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:15,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43069237] [2022-12-14 08:53:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:15,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:15,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:15,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 08:53:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:53:15,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43069237] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:15,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:15,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2022-12-14 08:53:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296501503] [2022-12-14 08:53:15,921 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:15,922 INFO L87 Difference]: Start difference. First operand 992 states and 1557 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:15,992 INFO L93 Difference]: Finished difference Result 1261 states and 1908 transitions. [2022-12-14 08:53:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:53:15,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-12-14 08:53:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:15,994 INFO L225 Difference]: With dead ends: 1261 [2022-12-14 08:53:15,995 INFO L226 Difference]: Without dead ends: 1261 [2022-12-14 08:53:15,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:15,995 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 100 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:15,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 165 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-12-14 08:53:16,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1120. [2022-12-14 08:53:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1108 states have (on average 1.5433212996389891) internal successors, (1710), 1119 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1710 transitions. [2022-12-14 08:53:16,010 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1710 transitions. Word has length 18 [2022-12-14 08:53:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1710 transitions. [2022-12-14 08:53:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1710 transitions. [2022-12-14 08:53:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 08:53:16,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:16,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:16,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 08:53:16,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 08:53:16,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-12-14 08:53:16,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:16,614 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1323238580, now seen corresponding path program 1 times [2022-12-14 08:53:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:16,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048769547] [2022-12-14 08:53:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:16,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:16,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:16,617 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:16,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 08:53:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:16,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048769547] [2022-12-14 08:53:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048769547] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235688745] [2022-12-14 08:53:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:16,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:16,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:16,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 08:53:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:16,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:16,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [235688745] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:16,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080504742] [2022-12-14 08:53:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:16,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:16,837 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:16,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 08:53:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:16,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:53:16,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080504742] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:16,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:16,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2022-12-14 08:53:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378220476] [2022-12-14 08:53:16,964 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 08:53:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 08:53:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:53:16,965 INFO L87 Difference]: Start difference. First operand 1120 states and 1710 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:17,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:17,190 INFO L93 Difference]: Finished difference Result 1823 states and 2654 transitions. [2022-12-14 08:53:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 08:53:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 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 21 [2022-12-14 08:53:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:17,195 INFO L225 Difference]: With dead ends: 1823 [2022-12-14 08:53:17,195 INFO L226 Difference]: Without dead ends: 1823 [2022-12-14 08:53:17,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-12-14 08:53:17,196 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 606 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:17,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1016 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2022-12-14 08:53:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1081. [2022-12-14 08:53:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1069 states have (on average 1.5266604303086997) internal successors, (1632), 1080 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1632 transitions. [2022-12-14 08:53:17,214 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1632 transitions. Word has length 21 [2022-12-14 08:53:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:17,214 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1632 transitions. [2022-12-14 08:53:17,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1632 transitions. [2022-12-14 08:53:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 08:53:17,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:17,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:17,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 08:53:17,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 08:53:17,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 08:53:17,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:17,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2049591299, now seen corresponding path program 1 times [2022-12-14 08:53:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:17,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146366031] [2022-12-14 08:53:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:17,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:17,821 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:17,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 08:53:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:17,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 08:53:17,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 08:53:17,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146366031] [2022-12-14 08:53:17,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146366031] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [776818612] [2022-12-14 08:53:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:17,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:17,989 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:17,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 08:53:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:18,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:18,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 08:53:18,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 08:53:18,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [776818612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:18,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584994549] [2022-12-14 08:53:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:18,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:18,152 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:18,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 08:53:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:18,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:18,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:53:18,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:18,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584994549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:18,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-12-14 08:53:18,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2022-12-14 08:53:18,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605308210] [2022-12-14 08:53:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:18,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:53:18,275 INFO L87 Difference]: Start difference. First operand 1081 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:18,320 INFO L93 Difference]: Finished difference Result 1319 states and 1982 transitions. [2022-12-14 08:53:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:53:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 30 [2022-12-14 08:53:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:18,325 INFO L225 Difference]: With dead ends: 1319 [2022-12-14 08:53:18,325 INFO L226 Difference]: Without dead ends: 1319 [2022-12-14 08:53:18,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:53:18,326 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:18,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 201 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:53:18,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-12-14 08:53:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1197. [2022-12-14 08:53:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1185 states have (on average 1.5248945147679325) internal successors, (1807), 1196 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1807 transitions. [2022-12-14 08:53:18,350 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1807 transitions. Word has length 30 [2022-12-14 08:53:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:18,350 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1807 transitions. [2022-12-14 08:53:18,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1807 transitions. [2022-12-14 08:53:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 08:53:18,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:18,351 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:18,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 08:53:18,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 08:53:18,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-14 08:53:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:18,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:18,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -134919915, now seen corresponding path program 1 times [2022-12-14 08:53:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:18,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369300532] [2022-12-14 08:53:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:18,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:18,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:18,956 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:18,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 08:53:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:19,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:53:19,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:53:19,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:19,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369300532] [2022-12-14 08:53:19,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369300532] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1508721175] [2022-12-14 08:53:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:19,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:19,095 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:19,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 08:53:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:19,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:19,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:53:19,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:53:19,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1508721175] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:19,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641493793] [2022-12-14 08:53:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:19,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:19,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:19,228 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 08:53:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:19,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 08:53:19,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:19,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:19,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641493793] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:19,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:19,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 7] total 13 [2022-12-14 08:53:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843003736] [2022-12-14 08:53:19,406 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 08:53:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 08:53:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-14 08:53:19,407 INFO L87 Difference]: Start difference. First operand 1197 states and 1807 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:19,803 INFO L93 Difference]: Finished difference Result 3756 states and 5513 transitions. [2022-12-14 08:53:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 08:53:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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 30 [2022-12-14 08:53:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:19,811 INFO L225 Difference]: With dead ends: 3756 [2022-12-14 08:53:19,811 INFO L226 Difference]: Without dead ends: 3756 [2022-12-14 08:53:19,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:53:19,812 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 2223 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:19,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 1368 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:53:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2022-12-14 08:53:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 2478. [2022-12-14 08:53:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2466 states have (on average 1.5012165450121655) internal successors, (3702), 2477 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3702 transitions. [2022-12-14 08:53:19,853 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3702 transitions. Word has length 30 [2022-12-14 08:53:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:19,854 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3702 transitions. [2022-12-14 08:53:19,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:19,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3702 transitions. [2022-12-14 08:53:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 08:53:19,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:19,855 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:19,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:20,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 08:53:20,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-12-14 08:53:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:20,457 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash 971894434, now seen corresponding path program 1 times [2022-12-14 08:53:20,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:20,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298701865] [2022-12-14 08:53:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:20,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:20,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:20,461 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:20,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 08:53:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:20,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:20,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:53:20,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:53:20,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:20,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298701865] [2022-12-14 08:53:20,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298701865] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:20,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66366740] [2022-12-14 08:53:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:20,619 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:20,620 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:20,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 08:53:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:20,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:20,738 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:53:20,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:53:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [66366740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353087322] [2022-12-14 08:53:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:20,767 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:20,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 08:53:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:53:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:20,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:53:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:53:20,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:53:20,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353087322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:20,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:20,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 4, 4] total 10 [2022-12-14 08:53:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271325919] [2022-12-14 08:53:20,955 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:20,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 08:53:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 08:53:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:53:20,956 INFO L87 Difference]: Start difference. First operand 2478 states and 3702 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:22,790 INFO L93 Difference]: Finished difference Result 9527 states and 14376 transitions. [2022-12-14 08:53:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 08:53:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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 39 [2022-12-14 08:53:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:22,805 INFO L225 Difference]: With dead ends: 9527 [2022-12-14 08:53:22,805 INFO L226 Difference]: Without dead ends: 9527 [2022-12-14 08:53:22,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1795, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 08:53:22,806 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 984 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:22,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1180 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 08:53:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9527 states. [2022-12-14 08:53:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9527 to 6617. [2022-12-14 08:53:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6617 states, 6606 states have (on average 1.5207387223735997) internal successors, (10046), 6616 states have internal predecessors, (10046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6617 states to 6617 states and 10046 transitions. [2022-12-14 08:53:22,938 INFO L78 Accepts]: Start accepts. Automaton has 6617 states and 10046 transitions. Word has length 39 [2022-12-14 08:53:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:22,938 INFO L495 AbstractCegarLoop]: Abstraction has 6617 states and 10046 transitions. [2022-12-14 08:53:22,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6617 states and 10046 transitions. [2022-12-14 08:53:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 08:53:22,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:22,939 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:22,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-12-14 08:53:23,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 08:53:23,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-14 08:53:23,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:23,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1822753242, now seen corresponding path program 1 times [2022-12-14 08:53:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:23,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019706225] [2022-12-14 08:53:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:23,548 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:23,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-14 08:53:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:23,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:53:23,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:23,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:23,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019706225] [2022-12-14 08:53:23,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019706225] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [347537019] [2022-12-14 08:53:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:23,741 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:23,746 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:23,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-12-14 08:53:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:23,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:53:23,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:23,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:23,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [347537019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:23,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884851882] [2022-12-14 08:53:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:23,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:23,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:23,918 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:23,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-14 08:53:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:23,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 08:53:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:24,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:24,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884851882] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:24,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:24,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2022-12-14 08:53:24,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471636418] [2022-12-14 08:53:24,136 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:24,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 08:53:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 08:53:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-14 08:53:24,137 INFO L87 Difference]: Start difference. First operand 6617 states and 10046 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:24,720 INFO L93 Difference]: Finished difference Result 10931 states and 16632 transitions. [2022-12-14 08:53:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 08:53:24,721 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 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 41 [2022-12-14 08:53:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:24,737 INFO L225 Difference]: With dead ends: 10931 [2022-12-14 08:53:24,737 INFO L226 Difference]: Without dead ends: 10931 [2022-12-14 08:53:24,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 08:53:24,738 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2112 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:24,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 2240 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:53:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10931 states. [2022-12-14 08:53:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10931 to 7404. [2022-12-14 08:53:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7393 states have (on average 1.5160286757743813) internal successors, (11208), 7403 states have internal predecessors, (11208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 11208 transitions. [2022-12-14 08:53:24,830 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 11208 transitions. Word has length 41 [2022-12-14 08:53:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 11208 transitions. [2022-12-14 08:53:24,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 11208 transitions. [2022-12-14 08:53:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 08:53:24,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:24,831 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:24,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2022-12-14 08:53:25,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-14 08:53:25,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-14 08:53:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:25,434 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 34201258, now seen corresponding path program 1 times [2022-12-14 08:53:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:25,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120985127] [2022-12-14 08:53:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:25,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:25,440 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:25,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-14 08:53:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:25,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:53:25,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:25,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:25,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120985127] [2022-12-14 08:53:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120985127] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344712054] [2022-12-14 08:53:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:25,695 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:25,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:25,696 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:25,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-12-14 08:53:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:25,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:53:25,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:25,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:25,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [344712054] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:25,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786062514] [2022-12-14 08:53:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:25,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:25,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:25,912 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:25,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-14 08:53:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:53:25,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:26,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:53:26,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786062514] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:26,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:26,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2022-12-14 08:53:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5548582] [2022-12-14 08:53:26,068 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:26,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:26,071 INFO L87 Difference]: Start difference. First operand 7404 states and 11208 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:26,167 INFO L93 Difference]: Finished difference Result 7409 states and 11113 transitions. [2022-12-14 08:53:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:53:26,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 50 [2022-12-14 08:53:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:26,180 INFO L225 Difference]: With dead ends: 7409 [2022-12-14 08:53:26,180 INFO L226 Difference]: Without dead ends: 7409 [2022-12-14 08:53:26,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:26,180 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 107 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:26,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 158 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:53:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7409 states. [2022-12-14 08:53:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7409 to 7404. [2022-12-14 08:53:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7393 states have (on average 1.5031786825375355) internal successors, (11113), 7403 states have internal predecessors, (11113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 11113 transitions. [2022-12-14 08:53:26,255 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 11113 transitions. Word has length 50 [2022-12-14 08:53:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:26,256 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 11113 transitions. [2022-12-14 08:53:26,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 11113 transitions. [2022-12-14 08:53:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 08:53:26,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:26,257 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:26,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-12-14 08:53:26,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-12-14 08:53:26,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-14 08:53:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:26,859 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1339034764, now seen corresponding path program 1 times [2022-12-14 08:53:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:26,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806705164] [2022-12-14 08:53:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:26,865 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:26,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-12-14 08:53:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:26,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:26,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:26,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:53:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:27,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:27,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:27,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806705164] [2022-12-14 08:53:27,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806705164] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:27,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1745247464] [2022-12-14 08:53:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:27,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:27,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:27,512 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:27,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-12-14 08:53:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:27,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:27,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:53:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:27,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:28,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1745247464] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:28,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332445691] [2022-12-14 08:53:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:28,035 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-14 08:53:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:28,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:28,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:28,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:53:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:28,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:53:28,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332445691] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:28,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:28,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-12-14 08:53:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307425720] [2022-12-14 08:53:28,605 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:53:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:53:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:53:28,607 INFO L87 Difference]: Start difference. First operand 7404 states and 11113 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:29,323 INFO L93 Difference]: Finished difference Result 12125 states and 17913 transitions. [2022-12-14 08:53:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:53:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 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 53 [2022-12-14 08:53:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:29,337 INFO L225 Difference]: With dead ends: 12125 [2022-12-14 08:53:29,337 INFO L226 Difference]: Without dead ends: 12125 [2022-12-14 08:53:29,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:53:29,338 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 379 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:29,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 382 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:53:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12125 states. [2022-12-14 08:53:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12125 to 10720. [2022-12-14 08:53:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 10709 states have (on average 1.4964048930805864) internal successors, (16025), 10719 states have internal predecessors, (16025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 16025 transitions. [2022-12-14 08:53:29,433 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 16025 transitions. Word has length 53 [2022-12-14 08:53:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 10720 states and 16025 transitions. [2022-12-14 08:53:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 16025 transitions. [2022-12-14 08:53:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:53:29,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:29,435 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:29,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:29,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-12-14 08:53:29,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-12-14 08:53:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:30,038 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1485538747, now seen corresponding path program 1 times [2022-12-14 08:53:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467659223] [2022-12-14 08:53:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:30,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:30,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:30,041 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:30,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-12-14 08:53:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:30,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:53:30,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 08:53:30,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 08:53:30,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467659223] [2022-12-14 08:53:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467659223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [6538483] [2022-12-14 08:53:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:30,273 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:30,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-12-14 08:53:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:30,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 08:53:30,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-14 08:53:30,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 08:53:30,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [6538483] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726551917] [2022-12-14 08:53:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:30,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:30,530 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:30,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-14 08:53:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 08:53:30,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 08:53:30,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 08:53:30,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726551917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:30,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:30,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 6, 6, 6] total 14 [2022-12-14 08:53:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090804773] [2022-12-14 08:53:30,772 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:30,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 08:53:30,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 08:53:30,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:53:30,773 INFO L87 Difference]: Start difference. First operand 10720 states and 16025 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:31,206 INFO L93 Difference]: Finished difference Result 30008 states and 43020 transitions. [2022-12-14 08:53:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 08:53:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 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 65 [2022-12-14 08:53:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:31,238 INFO L225 Difference]: With dead ends: 30008 [2022-12-14 08:53:31,238 INFO L226 Difference]: Without dead ends: 30008 [2022-12-14 08:53:31,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:53:31,239 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1607 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:31,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1747 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:53:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30008 states. [2022-12-14 08:53:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30008 to 20704. [2022-12-14 08:53:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20704 states, 20693 states have (on average 1.47069057169091) internal successors, (30433), 20703 states have internal predecessors, (30433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20704 states to 20704 states and 30433 transitions. [2022-12-14 08:53:31,447 INFO L78 Accepts]: Start accepts. Automaton has 20704 states and 30433 transitions. Word has length 65 [2022-12-14 08:53:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:31,447 INFO L495 AbstractCegarLoop]: Abstraction has 20704 states and 30433 transitions. [2022-12-14 08:53:31,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 20704 states and 30433 transitions. [2022-12-14 08:53:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 08:53:31,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:31,448 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:31,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-12-14 08:53:31,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2022-12-14 08:53:31,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-14 08:53:32,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:32,051 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 08:53:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832859, now seen corresponding path program 1 times [2022-12-14 08:53:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:32,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231449028] [2022-12-14 08:53:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:32,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:32,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:32,055 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:53:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-12-14 08:53:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:53:32,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:53:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:53:32,297 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 08:53:32,297 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:53:32,298 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2022-12-14 08:53:32,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2022-12-14 08:53:32,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2022-12-14 08:53:32,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2022-12-14 08:53:32,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2022-12-14 08:53:32,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2022-12-14 08:53:32,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2022-12-14 08:53:32,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2022-12-14 08:53:32,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-12-14 08:53:32,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:32,504 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:32,506 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:53:32,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:53:32 BoogieIcfgContainer [2022-12-14 08:53:32,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:53:32,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:53:32,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:53:32,554 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:53:32,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:10" (3/4) ... [2022-12-14 08:53:32,556 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:53:32,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:53:32,557 INFO L158 Benchmark]: Toolchain (without parser) took 22823.07ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 51.6MB in the beginning and 78.0MB in the end (delta: -26.4MB). Peak memory consumption was 133.6MB. Max. memory is 16.1GB. [2022-12-14 08:53:32,557 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:53:32,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.19ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 50.2MB in the end (delta: 1.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:53:32,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.05ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 47.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:53:32,558 INFO L158 Benchmark]: Boogie Preprocessor took 21.69ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 46.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:53:32,558 INFO L158 Benchmark]: RCFGBuilder took 473.97ms. Allocated memory is still 75.5MB. Free memory was 46.0MB in the beginning and 51.1MB in the end (delta: -5.0MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-12-14 08:53:32,558 INFO L158 Benchmark]: TraceAbstraction took 21998.27ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 50.7MB in the beginning and 78.0MB in the end (delta: -27.3MB). Peak memory consumption was 134.1MB. Max. memory is 16.1GB. [2022-12-14 08:53:32,558 INFO L158 Benchmark]: Witness Printer took 2.46ms. Allocated memory is still 237.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:53:32,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.19ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 50.2MB in the end (delta: 1.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.05ms. Allocated memory is still 75.5MB. Free memory was 50.2MB in the beginning and 47.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.69ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 46.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 473.97ms. Allocated memory is still 75.5MB. Free memory was 46.0MB in the beginning and 51.1MB in the end (delta: -5.0MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21998.27ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 50.7MB in the beginning and 78.0MB in the end (delta: -27.3MB). Peak memory consumption was 134.1MB. Max. memory is 16.1GB. * Witness Printer took 2.46ms. Allocated memory is still 237.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L542] x1->data = 4 VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [garbage={0:0}, pc1=4, pc1++=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L548] x1->next = t1 VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L551] COND TRUE S == t1 [L552] S = x1 VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={6:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [garbage={0:0}, pc1=6, pc4=2, pc4++=1, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [garbage={0:0}, pc1=6, pc4=3, pc4++=2, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L572] COND FALSE !(t4 == ((void *)0)) VAL [garbage={0:0}, pc1=6, pc4=3, pc4++=2, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [garbage={0:0}, pc1=6, pc4=4, pc4++=3, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L576] EXPR t4->next VAL [garbage={0:0}, pc1=6, pc4=4, pc4++=3, res4=0, S={6:0}, t1={0:0}, t4={6:0}, t4->next={0:0}, x1={6:0}, x4={0:0}] [L576] x4 = t4->next [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: VAL [garbage={0:0}, pc1=6, pc4=5, pc4++=4, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L579] COND TRUE S == t4 [L580] S = x4 VAL [garbage={0:0}, pc1=6, pc4=5, pc4++=4, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [garbage={0:0}, pc1=1, pc1++=6, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 21.9s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9608 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9608 mSDsluCounter, 10766 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8381 mSDsCounter, 439 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2445 IncrementalHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 439 mSolverCounterUnsat, 2385 mSDtfsCounter, 2445 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2342 GetRequests, 2108 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20704occurred in iteration=17, InterpolantAutomatonStates: 222, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 20180 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1227 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2163 ConstructedInterpolants, 0 QuantifiedInterpolants, 9133 SizeOfPredicates, 106 NumberOfNonLiveVariables, 4862 ConjunctsInSsa, 254 ConjunctsInUnsatCore, 71 InterpolantComputations, 7 PerfectInterpolantSequences, 1756/2966 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:53:32,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7d93e1d-353e-4f67-b37b-e061d8f049e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample