./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba --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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- 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-b5237d8 [2022-11-22 01:39:01,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:39:01,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:39:01,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:39:01,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:39:01,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:39:01,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:39:01,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:39:01,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:39:01,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:39:01,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:39:01,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:39:01,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:39:01,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:39:01,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:39:01,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:39:01,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:39:01,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:39:01,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:39:01,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:39:01,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:39:01,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:39:01,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:39:01,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:39:01,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:39:01,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:39:01,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:39:01,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:39:01,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:39:01,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:39:01,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:39:01,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:39:01,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:39:01,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:39:01,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:39:01,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:39:01,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:39:01,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:39:01,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:39:01,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:39:01,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:39:01,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:39:01,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:39:01,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:39:01,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:39:01,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:39:01,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:39:01,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:39:01,402 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:39:01,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:39:01,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:39:01,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:39:01,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:39:01,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:39:01,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:39:01,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:39:01,406 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:39:01,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:39:01,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:39:01,406 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:39:01,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:39:01,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:39:01,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:39:01,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:39:01,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:39:01,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:39:01,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:39:01,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:39:01,411 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:39:01,411 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:39:01,411 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:39:01,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:39:01,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:39:01,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:39:01,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:39:01,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:39:01,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:39:01,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:01,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:39:01,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:39:01,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:39:01,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:39:01,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:39:01,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:39:01,415 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_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2022-11-22 01:39:01,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:39:01,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:39:01,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:39:01,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:39:01,782 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:39:01,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-22 01:39:04,829 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:39:05,097 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:39:05,098 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-22 01:39:05,129 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/c8b9d3d78/cadfe878ad0a4d05b9e7f4f7d371c20a/FLAGa380a5f8a [2022-11-22 01:39:05,149 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/c8b9d3d78/cadfe878ad0a4d05b9e7f4f7d371c20a [2022-11-22 01:39:05,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:39:05,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:39:05,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:05,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:39:05,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:39:05,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:05,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e5862d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05, skipping insertion in model container [2022-11-22 01:39:05,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:05,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:39:05,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:39:05,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:05,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:39:05,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:05,882 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:39:05,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05 WrapperNode [2022-11-22 01:39:05,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:05,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:05,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:39:05,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:39:05,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:05,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:05,971 INFO L138 Inliner]: procedures = 188, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 237 [2022-11-22 01:39:05,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:05,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:39:05,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:39:05,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:39:05,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:05,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:39:06,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:39:06,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:39:06,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:39:06,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (1/1) ... [2022-11-22 01:39:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:06,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:06,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:39:06,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:39:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:39:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:39:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:39:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:39:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-22 01:39:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-22 01:39:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:39:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:39:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-22 01:39:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-22 01:39:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:39:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:39:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:39:06,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:39:06,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:39:07,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:39:07,243 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:39:07,244 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-22 01:39:07,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:07 BoogieIcfgContainer [2022-11-22 01:39:07,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:39:07,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:39:07,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:39:07,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:39:07,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:39:05" (1/3) ... [2022-11-22 01:39:07,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10108f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:07, skipping insertion in model container [2022-11-22 01:39:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:05" (2/3) ... [2022-11-22 01:39:07,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10108f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:07, skipping insertion in model container [2022-11-22 01:39:07,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:07" (3/3) ... [2022-11-22 01:39:07,264 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2022-11-22 01:39:07,288 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:39:07,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2022-11-22 01:39:07,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:39:07,451 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;@4783de38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:39:07,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-11-22 01:39:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 104 states have (on average 2.1346153846153846) internal successors, (222), 191 states have internal predecessors, (222), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:39:07,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:07,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:39:07,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash 457306, now seen corresponding path program 1 times [2022-11-22 01:39:07,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:07,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679778856] [2022-11-22 01:39:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:07,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:07,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:07,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679778856] [2022-11-22 01:39:07,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679778856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:07,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:07,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:07,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21829668] [2022-11-22 01:39:07,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:39:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:39:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:39:07,739 INFO L87 Difference]: Start difference. First operand has 206 states, 104 states have (on average 2.1346153846153846) internal successors, (222), 191 states have internal predecessors, (222), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:07,880 INFO L93 Difference]: Finished difference Result 206 states and 236 transitions. [2022-11-22 01:39:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:39:07,883 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 01:39:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:07,897 INFO L225 Difference]: With dead ends: 206 [2022-11-22 01:39:07,898 INFO L226 Difference]: Without dead ends: 205 [2022-11-22 01:39:07,900 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 [2022-11-22 01:39:07,906 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:07,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-22 01:39:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-11-22 01:39:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 190 states have internal predecessors, (211), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2022-11-22 01:39:07,992 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 3 [2022-11-22 01:39:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:07,993 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2022-11-22 01:39:07,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2022-11-22 01:39:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:39:07,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:07,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:39:07,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:39:07,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:07,997 INFO L85 PathProgramCache]: Analyzing trace with hash 435565614, now seen corresponding path program 1 times [2022-11-22 01:39:07,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:07,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849320266] [2022-11-22 01:39:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:07,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:08,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:39:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702464554] [2022-11-22 01:39:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:08,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:08,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:08,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:39:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:39:08,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:08,295 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 [2022-11-22 01:39:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:08,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:08,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849320266] [2022-11-22 01:39:08,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:39:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702464554] [2022-11-22 01:39:08,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702464554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:08,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:08,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068748756] [2022-11-22 01:39:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:08,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:08,328 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:08,634 INFO L93 Difference]: Finished difference Result 204 states and 234 transitions. [2022-11-22 01:39:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:39:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:08,637 INFO L225 Difference]: With dead ends: 204 [2022-11-22 01:39:08,637 INFO L226 Difference]: Without dead ends: 204 [2022-11-22 01:39:08,637 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 [2022-11-22 01:39:08,639 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 5 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:08,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 349 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:39:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-22 01:39:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-22 01:39:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 104 states have (on average 2.019230769230769) internal successors, (210), 189 states have internal predecessors, (210), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 234 transitions. [2022-11-22 01:39:08,653 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 234 transitions. Word has length 5 [2022-11-22 01:39:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:08,654 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 234 transitions. [2022-11-22 01:39:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 234 transitions. [2022-11-22 01:39:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:39:08,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:08,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:39:08,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:08,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 617632572, now seen corresponding path program 1 times [2022-11-22 01:39:08,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:08,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338662206] [2022-11-22 01:39:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:08,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:08,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:39:08,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831346801] [2022-11-22 01:39:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:08,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:08,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:39:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 01:39:08,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:09,098 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 [2022-11-22 01:39:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:09,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:09,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:09,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338662206] [2022-11-22 01:39:09,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:39:09,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831346801] [2022-11-22 01:39:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831346801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:09,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:09,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645027540] [2022-11-22 01:39:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:39:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:39:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:39:09,138 INFO L87 Difference]: Start difference. First operand 204 states and 234 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:09,381 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2022-11-22 01:39:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:39:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:39:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:09,383 INFO L225 Difference]: With dead ends: 209 [2022-11-22 01:39:09,383 INFO L226 Difference]: Without dead ends: 209 [2022-11-22 01:39:09,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:09,385 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 8 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:09,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 557 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:39:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-22 01:39:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-22 01:39:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 108 states have (on average 1.9907407407407407) internal successors, (215), 193 states have internal predecessors, (215), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2022-11-22 01:39:09,397 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 6 [2022-11-22 01:39:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:09,398 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2022-11-22 01:39:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2022-11-22 01:39:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 01:39:09,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:09,400 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:09,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:09,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1056375185, now seen corresponding path program 1 times [2022-11-22 01:39:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:09,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581344119] [2022-11-22 01:39:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:09,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:39:09,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118098895] [2022-11-22 01:39:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:09,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:09,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:09,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:09,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:39:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:09,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 01:39:09,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:09,963 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 [2022-11-22 01:39:09,988 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 [2022-11-22 01:39:10,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2022-11-22 01:39:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 01:39:18,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:18,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581344119] [2022-11-22 01:39:18,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:39:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118098895] [2022-11-22 01:39:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118098895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:18,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:18,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:39:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35416810] [2022-11-22 01:39:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:39:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:39:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=11, Unknown=2, NotChecked=0, Total=20 [2022-11-22 01:39:18,774 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:39:20,908 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0)) (.cse2 (<= |c_zalloc_or_die_#in~size#1| 0))) (and (= |c_zalloc_or_die_#Ultimate.C_memset_#t~loopctr40#1| 0) (or (exists ((|zalloc_or_die_calloc_model_~size#1| Int)) (let ((.cse0 (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|))) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= 1 .cse0) (<= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| (mod (* .cse0 |zalloc_or_die_calloc_model_~size#1|) 4294967296)) (<= |c_zalloc_or_die_#in~size#1| |zalloc_or_die_calloc_model_~size#1|)))) (and .cse1 .cse2)) (let ((.cse3 (select |c_#length| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (or (exists ((|zalloc_or_die_calloc_model_~size#1| Int)) (let ((.cse4 (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|))) (and (<= .cse3 (mod (* .cse4 |zalloc_or_die_calloc_model_~size#1|) 4294967296)) (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= 1 .cse4) (<= |c_zalloc_or_die_#in~size#1| |zalloc_or_die_calloc_model_~size#1|)))) (and .cse1 .cse2 (<= .cse3 0)))))) is different from true [2022-11-22 01:39:21,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=9, Invalid=12, Unknown=3, NotChecked=6, Total=30 [2022-11-22 01:39:21,194 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:21,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 2 Unchecked, 0.2s Time] [2022-11-22 01:39:21,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-22 01:39:21,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:21,396 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) 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) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 36 more [2022-11-22 01:39:21,399 INFO L158 Benchmark]: Toolchain (without parser) took 16246.55ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 116.4MB in the beginning and 150.5MB in the end (delta: -34.2MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2022-11-22 01:39:21,400 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:39:21,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 729.73ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 94.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-22 01:39:21,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.63ms. Allocated memory is still 163.6MB. Free memory was 94.8MB in the beginning and 91.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:39:21,401 INFO L158 Benchmark]: Boogie Preprocessor took 64.63ms. Allocated memory is still 163.6MB. Free memory was 91.9MB in the beginning and 89.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:39:21,401 INFO L158 Benchmark]: RCFGBuilder took 1210.43ms. Allocated memory is still 163.6MB. Free memory was 89.1MB in the beginning and 47.8MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-22 01:39:21,401 INFO L158 Benchmark]: TraceAbstraction took 14148.22ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 46.6MB in the beginning and 150.5MB in the end (delta: -104.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:39:21,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 729.73ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 94.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.63ms. Allocated memory is still 163.6MB. Free memory was 94.8MB in the beginning and 91.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.63ms. Allocated memory is still 163.6MB. Free memory was 91.9MB in the beginning and 89.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1210.43ms. Allocated memory is still 163.6MB. Free memory was 89.1MB in the beginning and 47.8MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14148.22ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 46.6MB in the beginning and 150.5MB in the end (delta: -104.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba --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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- 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-b5237d8 [2022-11-22 01:39:23,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:39:23,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:39:23,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:39:23,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:39:23,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:39:23,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:39:23,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:39:23,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:39:23,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:39:23,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:39:23,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:39:23,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:39:23,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:39:23,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:39:23,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:39:23,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:39:23,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:39:23,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:39:23,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:39:23,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:39:23,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:39:23,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:39:23,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:39:23,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:39:23,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:39:23,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:39:23,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:39:23,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:39:23,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:39:23,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:39:23,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:39:23,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:39:23,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:39:23,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:39:23,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:39:23,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:39:23,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:39:23,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:39:23,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:39:23,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:39:23,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-22 01:39:23,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:39:23,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:39:23,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:39:23,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:39:23,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:39:23,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:39:23,854 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:39:23,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:39:23,854 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:39:23,855 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:39:23,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:39:23,856 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:39:23,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:39:23,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:39:23,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:39:23,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:39:23,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:39:23,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:39:23,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:39:23,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:39:23,858 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:39:23,858 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:39:23,859 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:39:23,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:39:23,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:39:23,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:39:23,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:39:23,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:39:23,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:39:23,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:39:23,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:39:23,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:39:23,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:23,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:39:23,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:39:23,862 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:39:23,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:39:23,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:39:23,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:39:23,863 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_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2022-11-22 01:39:24,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:39:24,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:39:24,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:39:24,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:39:24,273 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:39:24,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-22 01:39:27,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:39:27,760 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:39:27,760 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-22 01:39:27,772 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/c1959f779/67f1d93edbd54b2f93f73af8097f1558/FLAGfe59462de [2022-11-22 01:39:27,795 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/data/c1959f779/67f1d93edbd54b2f93f73af8097f1558 [2022-11-22 01:39:27,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:39:27,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:39:27,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:27,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:39:27,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:39:27,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:27" (1/1) ... [2022-11-22 01:39:27,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0d8d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:27, skipping insertion in model container [2022-11-22 01:39:27,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:27" (1/1) ... [2022-11-22 01:39:27,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:39:27,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:39:28,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:28,260 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:39:28,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:28,386 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:39:28,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28 WrapperNode [2022-11-22 01:39:28,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:28,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:28,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:39:28,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:39:28,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,479 INFO L138 Inliner]: procedures = 189, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 233 [2022-11-22 01:39:28,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:28,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:39:28,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:39:28,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:39:28,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:39:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:39:28,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:39:28,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:39:28,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (1/1) ... [2022-11-22 01:39:28,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:28,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:39:28,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:39:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:39:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:39:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:39:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:39:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-22 01:39:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-22 01:39:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:39:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:39:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 01:39:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-22 01:39:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-22 01:39:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:39:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:39:28,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:39:28,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:39:30,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:39:30,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:39:30,038 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-22 01:39:30,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:30 BoogieIcfgContainer [2022-11-22 01:39:30,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:39:30,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:39:30,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:39:30,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:39:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:39:27" (1/3) ... [2022-11-22 01:39:30,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df498e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:30, skipping insertion in model container [2022-11-22 01:39:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:28" (2/3) ... [2022-11-22 01:39:30,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df498e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:30, skipping insertion in model container [2022-11-22 01:39:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:30" (3/3) ... [2022-11-22 01:39:30,050 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2022-11-22 01:39:30,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:39:30,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2022-11-22 01:39:30,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:39:30,138 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;@475beff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:39:30,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-11-22 01:39:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 131 states have (on average 1.9083969465648856) internal successors, (250), 218 states have internal predecessors, (250), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:39:30,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:30,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:39:30,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-22 01:39:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:30,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018079344] [2022-11-22 01:39:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:30,195 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 [2022-11-22 01:39:30,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:30,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:30,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 01:39:30,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:30,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:30,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018079344] [2022-11-22 01:39:30,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018079344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:30,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:30,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856602915] [2022-11-22 01:39:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:30,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:39:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:30,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:39:30,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:39:30,417 INFO L87 Difference]: Start difference. First operand has 233 states, 131 states have (on average 1.9083969465648856) internal successors, (250), 218 states have internal predecessors, (250), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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) [2022-11-22 01:39:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:30,461 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2022-11-22 01:39:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:39:30,464 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 [2022-11-22 01:39:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:30,476 INFO L225 Difference]: With dead ends: 233 [2022-11-22 01:39:30,476 INFO L226 Difference]: Without dead ends: 231 [2022-11-22 01:39:30,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:39:30,482 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:39:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-22 01:39:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-22 01:39:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 130 states have (on average 1.823076923076923) internal successors, (237), 216 states have internal predecessors, (237), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-22 01:39:30,540 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 4 [2022-11-22 01:39:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:30,541 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-22 01:39:30,541 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) [2022-11-22 01:39:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-22 01:39:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:39:30,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:30,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:39:30,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:30,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:30,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2022-11-22 01:39:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400004933] [2022-11-22 01:39:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:30,756 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 [2022-11-22 01:39:30,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:30,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:30,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:30,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:39:30,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:30,952 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 [2022-11-22 01:39:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:30,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:30,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:30,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400004933] [2022-11-22 01:39:30,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400004933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:30,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974901577] [2022-11-22 01:39:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:30,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:30,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:30,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:30,984 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:31,437 INFO L93 Difference]: Finished difference Result 230 states and 260 transitions. [2022-11-22 01:39:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:39:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:31,440 INFO L225 Difference]: With dead ends: 230 [2022-11-22 01:39:31,440 INFO L226 Difference]: Without dead ends: 230 [2022-11-22 01:39:31,440 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 [2022-11-22 01:39:31,442 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:31,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:39:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-22 01:39:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-22 01:39:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.8153846153846154) internal successors, (236), 215 states have internal predecessors, (236), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2022-11-22 01:39:31,461 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 6 [2022-11-22 01:39:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:31,461 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2022-11-22 01:39:31,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2022-11-22 01:39:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:39:31,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:31,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:31,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:31,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:31,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2022-11-22 01:39:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044335921] [2022-11-22 01:39:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:31,676 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 [2022-11-22 01:39:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:31,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:39:31,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:31,838 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 [2022-11-22 01:39:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:31,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:31,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:31,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044335921] [2022-11-22 01:39:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044335921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:31,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:31,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:39:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34858543] [2022-11-22 01:39:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:31,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:39:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:39:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:39:31,867 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:32,333 INFO L93 Difference]: Finished difference Result 239 states and 269 transitions. [2022-11-22 01:39:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:39:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:39:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:32,335 INFO L225 Difference]: With dead ends: 239 [2022-11-22 01:39:32,335 INFO L226 Difference]: Without dead ends: 239 [2022-11-22 01:39:32,335 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 [2022-11-22 01:39:32,336 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:32,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 678 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:39:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-22 01:39:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-22 01:39:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 138 states have (on average 1.7753623188405796) internal successors, (245), 223 states have internal predecessors, (245), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2022-11-22 01:39:32,394 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 7 [2022-11-22 01:39:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:32,394 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2022-11-22 01:39:32,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2022-11-22 01:39:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 01:39:32,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:32,396 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:32,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:32,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2022-11-22 01:39:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:32,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866880446] [2022-11-22 01:39:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:32,599 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 [2022-11-22 01:39:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:32,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:32,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 01:39:32,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 01:39:33,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:33,032 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866880446] [2022-11-22 01:39:33,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866880446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:33,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:39:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452848220] [2022-11-22 01:39:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:39:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:33,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:39:33,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:39:33,041 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 01:39:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:33,156 INFO L93 Difference]: Finished difference Result 251 states and 281 transitions. [2022-11-22 01:39:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:39:33,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-22 01:39:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:33,159 INFO L225 Difference]: With dead ends: 251 [2022-11-22 01:39:33,159 INFO L226 Difference]: Without dead ends: 241 [2022-11-22 01:39:33,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:39:33,163 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 19 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:33,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 736 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-22 01:39:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-22 01:39:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 140 states have (on average 1.7642857142857142) internal successors, (247), 225 states have internal predecessors, (247), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 271 transitions. [2022-11-22 01:39:33,195 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 271 transitions. Word has length 66 [2022-11-22 01:39:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 271 transitions. [2022-11-22 01:39:33,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 01:39:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 271 transitions. [2022-11-22 01:39:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:39:33,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:33,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:33,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:33,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:33,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:33,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:33,425 INFO L85 PathProgramCache]: Analyzing trace with hash 851001466, now seen corresponding path program 1 times [2022-11-22 01:39:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:33,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154840157] [2022-11-22 01:39:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:33,426 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 [2022-11-22 01:39:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:33,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:33,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:33,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:39:33,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-22 01:39:33,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-22 01:39:34,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:34,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154840157] [2022-11-22 01:39:34,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154840157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1238582031] [2022-11-22 01:39:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:34,187 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:39:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:39:34,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:39:34,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-22 01:39:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:34,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:39:34,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-22 01:39:34,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-22 01:39:34,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1238582031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:34,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910676366] [2022-11-22 01:39:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:34,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:34,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:39:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:35,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 01:39:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-22 01:39:38,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-22 01:39:39,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910676366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:39,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:39:39,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 16 [2022-11-22 01:39:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295405481] [2022-11-22 01:39:39,078 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:39:39,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:39:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:39:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=163, Unknown=1, NotChecked=0, Total=240 [2022-11-22 01:39:39,080 INFO L87 Difference]: Start difference. First operand 241 states and 271 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:39:42,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:39:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:43,862 INFO L93 Difference]: Finished difference Result 260 states and 291 transitions. [2022-11-22 01:39:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:39:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-11-22 01:39:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:43,864 INFO L225 Difference]: With dead ends: 260 [2022-11-22 01:39:43,865 INFO L226 Difference]: Without dead ends: 245 [2022-11-22 01:39:43,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=207, Invalid=392, Unknown=1, NotChecked=0, Total=600 [2022-11-22 01:39:43,866 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 73 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2210 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 01:39:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-22 01:39:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-11-22 01:39:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 229 states have internal predecessors, (251), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 275 transitions. [2022-11-22 01:39:43,876 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 275 transitions. Word has length 71 [2022-11-22 01:39:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:43,876 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 275 transitions. [2022-11-22 01:39:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:39:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 275 transitions. [2022-11-22 01:39:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 01:39:43,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:43,879 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:43,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:44,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:44,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:44,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash 678119687, now seen corresponding path program 2 times [2022-11-22 01:39:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:44,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697225182] [2022-11-22 01:39:44,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:39:44,498 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 [2022-11-22 01:39:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:44,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:44,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:39:44,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-22 01:39:44,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:39:44,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:39:44,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:44,752 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 8 treesize of output 7 [2022-11-22 01:39:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-22 01:39:45,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:39:45,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:45,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697225182] [2022-11-22 01:39:45,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697225182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:45,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:45,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577862853] [2022-11-22 01:39:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:45,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:45,025 INFO L87 Difference]: Start difference. First operand 245 states and 275 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:39:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:45,825 INFO L93 Difference]: Finished difference Result 244 states and 274 transitions. [2022-11-22 01:39:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:45,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2022-11-22 01:39:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:45,827 INFO L225 Difference]: With dead ends: 244 [2022-11-22 01:39:45,827 INFO L226 Difference]: Without dead ends: 244 [2022-11-22 01:39:45,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:45,828 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 7 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:45,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 431 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:39:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-22 01:39:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-22 01:39:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 228 states have internal predecessors, (250), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2022-11-22 01:39:45,837 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 86 [2022-11-22 01:39:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:45,838 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2022-11-22 01:39:45,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:39:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2022-11-22 01:39:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 01:39:45,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:45,840 INFO L195 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:39:45,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:46,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:39:46,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1975385078, now seen corresponding path program 1 times [2022-11-22 01:39:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:46,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640946792] [2022-11-22 01:39:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:46,057 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 [2022-11-22 01:39:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:46,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:46,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (10)] Waiting until timeout for monitored process [2022-11-22 01:39:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:39:46,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 155 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-22 01:39:46,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-22 01:39:47,645 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:47,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640946792] [2022-11-22 01:39:47,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640946792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:47,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [205983036] [2022-11-22 01:39:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:47,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:39:47,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:39:47,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:39:47,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-22 01:39:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:48,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:39:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 155 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-22 01:39:48,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-22 01:39:48,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [205983036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:48,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201194036] [2022-11-22 01:39:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:48,755 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:48,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:39:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:49,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:39:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-22 01:39:49,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-22 01:39:49,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201194036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:49,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:39:49,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 7, 7] total 22 [2022-11-22 01:39:49,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279494232] [2022-11-22 01:39:49,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:39:49,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:39:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:39:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:39:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:39:49,935 INFO L87 Difference]: Start difference. First operand 244 states and 274 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:39:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:52,356 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2022-11-22 01:39:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-22 01:39:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 95 [2022-11-22 01:39:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:52,359 INFO L225 Difference]: With dead ends: 284 [2022-11-22 01:39:52,359 INFO L226 Difference]: Without dead ends: 254 [2022-11-22 01:39:52,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=533, Invalid=1359, Unknown=0, NotChecked=0, Total=1892 [2022-11-22 01:39:52,360 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 277 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:52,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 3225 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:39:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-22 01:39:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-22 01:39:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 154 states have (on average 1.6883116883116882) internal successors, (260), 238 states have internal predecessors, (260), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:39:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2022-11-22 01:39:52,369 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 95 [2022-11-22 01:39:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:52,369 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2022-11-22 01:39:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:39:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2022-11-22 01:39:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-22 01:39:52,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:52,371 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:39:52,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:52,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:52,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:39:52,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:39:52,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:39:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1310518742, now seen corresponding path program 2 times [2022-11-22 01:39:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:39:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942016275] [2022-11-22 01:39:52,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:39:52,991 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 [2022-11-22 01:39:52,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:39:52,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:39:52,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:39:54,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:39:54,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:39:54,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:39:54,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:39:54,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:39:56,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:39:56,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942016275] [2022-11-22 01:39:56,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942016275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1646304057] [2022-11-22 01:39:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:39:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:39:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:39:56,189 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:39:56,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-22 01:39:57,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:39:57,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:39:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:39:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:39:57,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:39:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:39:58,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1646304057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:58,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290261528] [2022-11-22 01:39:58,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:39:58,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:58,206 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:58,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 01:39:58,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:39:58,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:39:58,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:39:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:59,478 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1610 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_1610) |c_#valid|)) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-22 01:39:59,793 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-22 01:39:59,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-22 01:39:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 88 not checked. [2022-11-22 01:39:59,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:00,848 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-22 01:40:00,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-22 01:40:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 88 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-11-22 01:40:00,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290261528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:40:00,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:40:00,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 10, 9] total 34 [2022-11-22 01:40:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835341038] [2022-11-22 01:40:00,874 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:40:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-22 01:40:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:40:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-22 01:40:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=872, Unknown=1, NotChecked=62, Total=1122 [2022-11-22 01:40:00,877 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 32 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:40:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:17,615 INFO L93 Difference]: Finished difference Result 418 states and 488 transitions. [2022-11-22 01:40:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-22 01:40:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 32 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 121 [2022-11-22 01:40:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:17,621 INFO L225 Difference]: With dead ends: 418 [2022-11-22 01:40:17,621 INFO L226 Difference]: Without dead ends: 408 [2022-11-22 01:40:17,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 686 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1202, Invalid=4057, Unknown=1, NotChecked=142, Total=5402 [2022-11-22 01:40:17,624 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 674 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:17,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 3049 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2284 Invalid, 0 Unknown, 301 Unchecked, 8.3s Time] [2022-11-22 01:40:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-22 01:40:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 262. [2022-11-22 01:40:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 164 states have (on average 1.6280487804878048) internal successors, (267), 246 states have internal predecessors, (267), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:40:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 291 transitions. [2022-11-22 01:40:17,637 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 291 transitions. Word has length 121 [2022-11-22 01:40:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:17,638 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 291 transitions. [2022-11-22 01:40:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 32 states have internal predecessors, (83), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:40:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 291 transitions. [2022-11-22 01:40:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:40:17,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:17,641 INFO L195 NwaCegarLoop]: trace histogram [58, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:40:17,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:17,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:18,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:40:18,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:40:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1975748939, now seen corresponding path program 1 times [2022-11-22 01:40:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:40:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029831925] [2022-11-22 01:40:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:18,253 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 [2022-11-22 01:40:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:40:18,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:40:18,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (16)] Waiting until timeout for monitored process [2022-11-22 01:40:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 01:40:19,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:40:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:21,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:24,655 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:40:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029831925] [2022-11-22 01:40:24,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029831925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:40:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1587193445] [2022-11-22 01:40:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:40:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:40:24,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:40:24,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-22 01:40:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 01:40:26,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:40:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:26,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:27,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1587193445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:40:27,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532875992] [2022-11-22 01:40:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:27,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:40:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:40:27,544 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:40:27,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 01:40:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:28,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-22 01:40:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:40:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:28,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 890 proven. 171 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:36,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532875992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:40:36,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:40:36,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23, 23, 23] total 65 [2022-11-22 01:40:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418459676] [2022-11-22 01:40:36,515 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:40:36,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-22 01:40:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:40:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-22 01:40:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=3091, Unknown=0, NotChecked=0, Total=4160 [2022-11-22 01:40:36,518 INFO L87 Difference]: Start difference. First operand 262 states and 291 transitions. Second operand has 65 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 65 states have internal predecessors, (101), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:40:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:40:52,816 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2022-11-22 01:40:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-22 01:40:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 65 states have internal predecessors, (101), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 131 [2022-11-22 01:40:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:40:52,835 INFO L225 Difference]: With dead ends: 292 [2022-11-22 01:40:52,835 INFO L226 Difference]: Without dead ends: 282 [2022-11-22 01:40:52,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=2920, Invalid=6392, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 01:40:52,839 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 891 mSDsluCounter, 7124 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 7375 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:40:52,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 7375 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 01:40:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-22 01:40:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-11-22 01:40:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 184 states have (on average 1.559782608695652) internal successors, (287), 266 states have internal predecessors, (287), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:40:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 311 transitions. [2022-11-22 01:40:52,848 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 311 transitions. Word has length 131 [2022-11-22 01:40:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:40:52,849 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 311 transitions. [2022-11-22 01:40:52,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 65 states have internal predecessors, (101), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:40:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 311 transitions. [2022-11-22 01:40:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 01:40:52,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:52,851 INFO L195 NwaCegarLoop]: trace histogram [78, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:40:52,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:53,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (16)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:53,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-22 01:40:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:40:53,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:40:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1905311861, now seen corresponding path program 2 times [2022-11-22 01:40:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:40:53,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102059459] [2022-11-22 01:40:53,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:40:53,473 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 [2022-11-22 01:40:53,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:40:53,474 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:40:53,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (19)] Waiting until timeout for monitored process [2022-11-22 01:40:55,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:40:55,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:40:55,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-22 01:40:55,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:40:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:40:59,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:41:09,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:41:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102059459] [2022-11-22 01:41:09,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102059459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [364538799] [2022-11-22 01:41:09,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:41:09,962 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:41:09,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:41:09,963 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:41:09,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-22 01:41:12,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:41:12,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-22 01:41:12,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:41:12,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:41:14,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [364538799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:14,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174894408] [2022-11-22 01:41:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:41:14,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:14,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:14,617 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:14,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 01:41:15,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:41:15,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:15,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:41:15,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:41:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3606 backedges. 1790 proven. 741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:41:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174894408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:45,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:41:45,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43, 43, 43, 43] total 125 [2022-11-22 01:41:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106588204] [2022-11-22 01:41:45,904 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-11-22 01:41:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:41:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-11-22 01:41:45,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3729, Invalid=11771, Unknown=0, NotChecked=0, Total=15500 [2022-11-22 01:41:45,912 INFO L87 Difference]: Start difference. First operand 282 states and 311 transitions. Second operand has 125 states, 125 states have (on average 1.288) internal successors, (161), 125 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:43:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:00,208 INFO L93 Difference]: Finished difference Result 332 states and 399 transitions. [2022-11-22 01:43:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-22 01:43:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.288) internal successors, (161), 125 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 151 [2022-11-22 01:43:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:00,218 INFO L225 Difference]: With dead ends: 332 [2022-11-22 01:43:00,218 INFO L226 Difference]: Without dead ends: 322 [2022-11-22 01:43:00,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6268 ImplicationChecksByTransitivity, 97.0s TimeCoverageRelationStatistics Valid=9350, Invalid=21802, Unknown=0, NotChecked=0, Total=31152 [2022-11-22 01:43:00,227 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2074 mSDsluCounter, 15442 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 1377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 15693 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1377 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:00,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 15693 Invalid, 3887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1377 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2022-11-22 01:43:00,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-22 01:43:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-22 01:43:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 306 states have internal predecessors, (327), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:43:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 351 transitions. [2022-11-22 01:43:00,238 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 351 transitions. Word has length 151 [2022-11-22 01:43:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 351 transitions. [2022-11-22 01:43:00,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.288) internal successors, (161), 125 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:43:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 351 transitions. [2022-11-22 01:43:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-22 01:43:00,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:00,242 INFO L195 NwaCegarLoop]: trace histogram [118, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:43:00,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (19)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:00,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:00,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:00,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:43:00,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:43:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1621740555, now seen corresponding path program 3 times [2022-11-22 01:43:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:43:00,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96554435] [2022-11-22 01:43:00,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:43:00,860 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 [2022-11-22 01:43:00,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:43:00,861 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:43:00,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (22)] Waiting until timeout for monitored process [2022-11-22 01:43:01,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:43:01,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:01,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-22 01:43:01,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:01,558 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 [2022-11-22 01:43:02,226 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_4855 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_4855))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-22 01:43:03,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:03,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:43:03,538 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-22 01:43:03,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-22 01:43:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3229 proven. 0 refuted. 0 times theorem prover too weak. 3799 trivial. 718 not checked. [2022-11-22 01:43:03,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:04,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:43:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96554435] [2022-11-22 01:43:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96554435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450859671] [2022-11-22 01:43:04,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:43:04,883 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:43:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:43:04,884 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:43:04,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-22 01:43:06,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:43:06,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:06,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-22 01:43:06,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:06,213 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 [2022-11-22 01:43:06,649 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_5580 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5580))))) is different from true [2022-11-22 01:43:07,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:07,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:43:07,945 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-22 01:43:07,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-22 01:43:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3229 proven. 0 refuted. 0 times theorem prover too weak. 3799 trivial. 718 not checked. [2022-11-22 01:43:07,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:08,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [450859671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:08,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375230834] [2022-11-22 01:43:08,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:43:08,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:08,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:08,404 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:08,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-22 01:43:09,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:43:09,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:09,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-22 01:43:09,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:09,285 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 [2022-11-22 01:43:09,651 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| |c_zalloc_or_die_#in~size#1|) |c_#length|))) is different from true [2022-11-22 01:43:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:10,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 01:43:10,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:10,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 01:43:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3229 proven. 0 refuted. 0 times theorem prover too weak. 3799 trivial. 718 not checked. [2022-11-22 01:43:11,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:14,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375230834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:14,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:14,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 15 [2022-11-22 01:43:14,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542431543] [2022-11-22 01:43:14,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:14,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:43:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:43:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:43:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=201, Unknown=4, NotChecked=90, Total=342 [2022-11-22 01:43:14,161 INFO L87 Difference]: Start difference. First operand 322 states and 351 transitions. Second operand has 16 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:43:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:22,554 INFO L93 Difference]: Finished difference Result 473 states and 538 transitions. [2022-11-22 01:43:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:43:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 191 [2022-11-22 01:43:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:22,558 INFO L225 Difference]: With dead ends: 473 [2022-11-22 01:43:22,559 INFO L226 Difference]: Without dead ends: 473 [2022-11-22 01:43:22,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 559 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=87, Invalid=341, Unknown=4, NotChecked=120, Total=552 [2022-11-22 01:43:22,560 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 357 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1276 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:22,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 452 Invalid, 3447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2126 Invalid, 0 Unknown, 1276 Unchecked, 7.3s Time] [2022-11-22 01:43:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-22 01:43:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 320. [2022-11-22 01:43:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 224 states have (on average 1.4508928571428572) internal successors, (325), 304 states have internal predecessors, (325), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:43:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 349 transitions. [2022-11-22 01:43:22,574 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 349 transitions. Word has length 191 [2022-11-22 01:43:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:22,574 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 349 transitions. [2022-11-22 01:43:22,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:43:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 349 transitions. [2022-11-22 01:43:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-22 01:43:22,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:22,578 INFO L195 NwaCegarLoop]: trace histogram [118, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 01:43:22,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:22,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:22,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 (22)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:23,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:43:23,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-22 01:43:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:23,190 INFO L85 PathProgramCache]: Analyzing trace with hash -580455829, now seen corresponding path program 1 times [2022-11-22 01:43:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:43:23,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118578035] [2022-11-22 01:43:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:23,191 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 [2022-11-22 01:43:23,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:43:23,192 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:43:23,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:43:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-22 01:43:25,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:43:40,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:44:10,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:44:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118578035] [2022-11-22 01:44:10,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118578035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071889915] [2022-11-22 01:44:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:44:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:44:10,549 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:44:10,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-22 01:44:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-22 01:44:14,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:44:15,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:44:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2071889915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515513812] [2022-11-22 01:44:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:20,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:20,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:20,788 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:20,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d2198f-7350-4094-b0bc-0630b51b00bc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-22 01:44:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:22,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-22 01:44:22,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:44:23,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7746 backedges. 3590 proven. 3081 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-22 01:46:15,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515513812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:15,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:46:15,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83, 83, 83, 83] total 245 [2022-11-22 01:46:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811230241] [2022-11-22 01:46:15,843 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:46:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 245 states [2022-11-22 01:46:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:46:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2022-11-22 01:46:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13031, Invalid=46749, Unknown=0, NotChecked=0, Total=59780 [2022-11-22 01:46:15,862 INFO L87 Difference]: Start difference. First operand 320 states and 349 transitions. Second operand has 245 states, 245 states have (on average 1.1551020408163266) internal successors, (283), 245 states have internal predecessors, (283), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:47:18,784 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 359 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:47:36,776 WARN L233 SmtUtils]: Spent 10.62s on a formula simplification. DAG size of input: 355 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:47:54,232 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 351 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:48:11,393 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 347 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:48:28,580 WARN L233 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 343 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:48:44,931 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 339 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:49:01,154 WARN L233 SmtUtils]: Spent 9.54s on a formula simplification. DAG size of input: 335 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:49:18,375 WARN L233 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 331 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:49:35,042 WARN L233 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 327 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:49:51,292 WARN L233 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 323 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:50:07,480 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 319 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:50:23,786 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 315 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:50:40,684 WARN L233 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 311 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:50:57,341 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 307 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:13,531 WARN L233 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 303 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:29,472 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 299 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:45,385 WARN L233 SmtUtils]: Spent 9.08s on a formula simplification. DAG size of input: 295 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:52:01,306 WARN L233 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 291 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:52:17,371 WARN L233 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 287 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:52:32,811 WARN L233 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 283 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:52:48,192 WARN L233 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 279 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:53:03,839 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 275 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:53:19,138 WARN L233 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 271 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:53:34,223 WARN L233 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 267 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)