./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- 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-6b4ec56 [2022-11-20 10:49:29,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:29,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:29,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:29,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:29,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:29,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:29,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:29,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:29,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:29,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:29,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:29,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:29,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:29,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:29,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:29,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:29,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:29,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:29,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:29,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:29,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:29,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:29,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:29,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:29,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:29,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:29,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:29,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:29,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:29,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:29,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:29,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:29,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:29,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:29,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:29,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:29,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:29,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:29,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:29,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:29,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:49:29,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:29,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:29,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:29,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:29,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:29,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:29,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:29,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:29,407 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:29,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:29,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:29,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:49:29,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:49:29,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:29,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:49:29,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:29,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:29,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:29,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:29,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:29,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:29,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:29,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:29,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:29,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:49:29,421 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_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-20 10:49:29,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:29,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:29,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:29,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:29,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:29,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-20 10:49:32,778 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:33,110 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:33,110 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-20 10:49:33,123 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/284649037/ca9dfbb102f94ce79c6fb5018d3a004e/FLAGfa3a278c1 [2022-11-20 10:49:33,136 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/284649037/ca9dfbb102f94ce79c6fb5018d3a004e [2022-11-20 10:49:33,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:33,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:33,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:33,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:33,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:33,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190ca36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33, skipping insertion in model container [2022-11-20 10:49:33,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:33,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:33,454 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 10:49:33,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-20 10:49:33,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:33,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:33,712 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 10:49:33,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-20 10:49:33,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:33,800 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:33,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33 WrapperNode [2022-11-20 10:49:33,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:33,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:33,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:33,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:33,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,875 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2022-11-20 10:49:33,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:33,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:33,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:33,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:33,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:33,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:33,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:33,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:33,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (1/1) ... [2022-11-20 10:49:33,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:33,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:33,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:34,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:49:34,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:49:34,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:49:34,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:34,010 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-20 10:49:34,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-20 10:49:34,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:49:34,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:49:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:49:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:49:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:34,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-20 10:49:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-20 10:49:34,013 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:49:34,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:34,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:34,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:49:34,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:49:34,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:49:34,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:34 BoogieIcfgContainer [2022-11-20 10:49:34,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:49:34,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:49:34,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:49:34,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:49:34,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:33" (1/3) ... [2022-11-20 10:49:34,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e81d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:34, skipping insertion in model container [2022-11-20 10:49:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:33" (2/3) ... [2022-11-20 10:49:34,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e81d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:34, skipping insertion in model container [2022-11-20 10:49:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:34" (3/3) ... [2022-11-20 10:49:34,560 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-20 10:49:34,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:49:34,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 10:49:34,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:49:34,781 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:49:34,884 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:49:34,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 134 transitions, 300 flow [2022-11-20 10:49:34,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 134 transitions, 300 flow [2022-11-20 10:49:34,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 300 flow [2022-11-20 10:49:35,043 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-11-20 10:49:35,043 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:49:35,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 2/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-20 10:49:35,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 3246 [2022-11-20 10:49:40,620 INFO L134 LiptonReduction]: Checked pairs total: 17780 [2022-11-20 10:49:40,620 INFO L136 LiptonReduction]: Total number of compositions: 123 [2022-11-20 10:49:40,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 62 transitions, 156 flow [2022-11-20 10:49:41,068 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 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) [2022-11-20 10:49:41,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:49:41,104 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;@53980aee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:49:41,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-20 10:49:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 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) [2022-11-20 10:49:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:49:41,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:41,152 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:49:41,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash 472, now seen corresponding path program 1 times [2022-11-20 10:49:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:41,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352031052] [2022-11-20 10:49:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352031052] [2022-11-20 10:49:41,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352031052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:41,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:41,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:49:41,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281614750] [2022-11-20 10:49:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:41,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:49:41,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:49:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:49:41,357 INFO L87 Difference]: Start difference. First operand has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:41,600 INFO L93 Difference]: Finished difference Result 7400 states and 28264 transitions. [2022-11-20 10:49:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:49:41,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:49:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:41,696 INFO L225 Difference]: With dead ends: 7400 [2022-11-20 10:49:41,697 INFO L226 Difference]: Without dead ends: 7400 [2022-11-20 10:49:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:49:41,701 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-11-20 10:49:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7400. [2022-11-20 10:49:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7400 states, 7362 states have (on average 3.839174137462646) internal successors, (28264), 7399 states have internal predecessors, (28264), 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) [2022-11-20 10:49:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7400 states to 7400 states and 28264 transitions. [2022-11-20 10:49:42,290 INFO L78 Accepts]: Start accepts. Automaton has 7400 states and 28264 transitions. Word has length 1 [2022-11-20 10:49:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:42,291 INFO L495 AbstractCegarLoop]: Abstraction has 7400 states and 28264 transitions. [2022-11-20 10:49:42,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7400 states and 28264 transitions. [2022-11-20 10:49:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:49:42,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:42,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:49:42,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:49:42,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash 465921, now seen corresponding path program 1 times [2022-11-20 10:49:42,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:42,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956585732] [2022-11-20 10:49:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:42,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956585732] [2022-11-20 10:49:42,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956585732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:42,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:42,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:42,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636013084] [2022-11-20 10:49:42,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:42,704 INFO L87 Difference]: Start difference. First operand 7400 states and 28264 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:42,964 INFO L93 Difference]: Finished difference Result 7072 states and 27114 transitions. [2022-11-20 10:49:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:42,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:49:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:43,034 INFO L225 Difference]: With dead ends: 7072 [2022-11-20 10:49:43,034 INFO L226 Difference]: Without dead ends: 7072 [2022-11-20 10:49:43,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:43,036 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 10 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-11-20 10:49:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7072. [2022-11-20 10:49:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7072 states, 7039 states have (on average 3.8519676090353743) internal successors, (27114), 7071 states have internal predecessors, (27114), 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) [2022-11-20 10:49:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 27114 transitions. [2022-11-20 10:49:43,403 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 27114 transitions. Word has length 3 [2022-11-20 10:49:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:43,404 INFO L495 AbstractCegarLoop]: Abstraction has 7072 states and 27114 transitions. [2022-11-20 10:49:43,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 27114 transitions. [2022-11-20 10:49:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:49:43,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:43,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:49:43,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:49:43,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 465922, now seen corresponding path program 1 times [2022-11-20 10:49:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:43,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796559055] [2022-11-20 10:49:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796559055] [2022-11-20 10:49:43,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796559055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:43,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:43,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413224540] [2022-11-20 10:49:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:43,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:43,727 INFO L87 Difference]: Start difference. First operand 7072 states and 27114 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:43,868 INFO L93 Difference]: Finished difference Result 6744 states and 25964 transitions. [2022-11-20 10:49:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:43,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:49:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:43,923 INFO L225 Difference]: With dead ends: 6744 [2022-11-20 10:49:43,923 INFO L226 Difference]: Without dead ends: 6744 [2022-11-20 10:49:43,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:43,925 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:43,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 10 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2022-11-20 10:49:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 6744. [2022-11-20 10:49:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6716 states have (on average 3.865991661703395) internal successors, (25964), 6743 states have internal predecessors, (25964), 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) [2022-11-20 10:49:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 25964 transitions. [2022-11-20 10:49:44,396 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 25964 transitions. Word has length 3 [2022-11-20 10:49:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:44,397 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 25964 transitions. [2022-11-20 10:49:44,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 25964 transitions. [2022-11-20 10:49:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:49:44,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:44,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:49:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:49:44,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 447759405, now seen corresponding path program 1 times [2022-11-20 10:49:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:44,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75942341] [2022-11-20 10:49:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:44,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:44,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75942341] [2022-11-20 10:49:44,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75942341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:44,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:44,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:44,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163154438] [2022-11-20 10:49:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:44,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:44,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:44,611 INFO L87 Difference]: Start difference. First operand 6744 states and 25964 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:44,835 INFO L93 Difference]: Finished difference Result 6672 states and 25774 transitions. [2022-11-20 10:49:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:49:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:44,979 INFO L225 Difference]: With dead ends: 6672 [2022-11-20 10:49:44,980 INFO L226 Difference]: Without dead ends: 6672 [2022-11-20 10:49:44,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:44,981 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2022-11-20 10:49:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6672. [2022-11-20 10:49:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6672 states, 6648 states have (on average 3.8769554753309268) internal successors, (25774), 6671 states have internal predecessors, (25774), 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) [2022-11-20 10:49:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 25774 transitions. [2022-11-20 10:49:45,395 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 25774 transitions. Word has length 5 [2022-11-20 10:49:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:45,396 INFO L495 AbstractCegarLoop]: Abstraction has 6672 states and 25774 transitions. [2022-11-20 10:49:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 25774 transitions. [2022-11-20 10:49:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:49:45,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:45,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:49:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:49:45,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 447759406, now seen corresponding path program 1 times [2022-11-20 10:49:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545081499] [2022-11-20 10:49:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:45,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545081499] [2022-11-20 10:49:45,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545081499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:45,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:45,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210455012] [2022-11-20 10:49:45,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:45,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:45,512 INFO L87 Difference]: Start difference. First operand 6672 states and 25774 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:45,651 INFO L93 Difference]: Finished difference Result 6600 states and 25584 transitions. [2022-11-20 10:49:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:45,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:49:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:45,697 INFO L225 Difference]: With dead ends: 6600 [2022-11-20 10:49:45,698 INFO L226 Difference]: Without dead ends: 6600 [2022-11-20 10:49:45,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:45,699 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:45,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 10 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2022-11-20 10:49:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 6600. [2022-11-20 10:49:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6580 states have (on average 3.888145896656535) internal successors, (25584), 6599 states have internal predecessors, (25584), 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) [2022-11-20 10:49:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 25584 transitions. [2022-11-20 10:49:46,057 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 25584 transitions. Word has length 5 [2022-11-20 10:49:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:46,057 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 25584 transitions. [2022-11-20 10:49:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 25584 transitions. [2022-11-20 10:49:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:49:46,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:46,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:49:46,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 800070988, now seen corresponding path program 1 times [2022-11-20 10:49:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590933649] [2022-11-20 10:49:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:46,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590933649] [2022-11-20 10:49:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590933649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:46,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:46,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:46,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441975438] [2022-11-20 10:49:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:46,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:46,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:46,121 INFO L87 Difference]: Start difference. First operand 6600 states and 25584 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:46,343 INFO L93 Difference]: Finished difference Result 6447 states and 25079 transitions. [2022-11-20 10:49:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:49:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:46,382 INFO L225 Difference]: With dead ends: 6447 [2022-11-20 10:49:46,383 INFO L226 Difference]: Without dead ends: 6447 [2022-11-20 10:49:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:46,384 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:46,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:49:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6447 states. [2022-11-20 10:49:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6447 to 6447. [2022-11-20 10:49:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 6431 states have (on average 3.899704556056601) internal successors, (25079), 6446 states have internal predecessors, (25079), 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) [2022-11-20 10:49:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 25079 transitions. [2022-11-20 10:49:46,601 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 25079 transitions. Word has length 7 [2022-11-20 10:49:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:46,601 INFO L495 AbstractCegarLoop]: Abstraction has 6447 states and 25079 transitions. [2022-11-20 10:49:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 25079 transitions. [2022-11-20 10:49:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:49:46,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:46,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:46,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:49:46,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 800070989, now seen corresponding path program 1 times [2022-11-20 10:49:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695960281] [2022-11-20 10:49:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:46,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:46,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695960281] [2022-11-20 10:49:46,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695960281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:46,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:46,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:46,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687190268] [2022-11-20 10:49:46,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:46,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:46,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:46,690 INFO L87 Difference]: Start difference. First operand 6447 states and 25079 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:46,896 INFO L93 Difference]: Finished difference Result 6294 states and 24574 transitions. [2022-11-20 10:49:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:49:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:46,929 INFO L225 Difference]: With dead ends: 6294 [2022-11-20 10:49:46,930 INFO L226 Difference]: Without dead ends: 6294 [2022-11-20 10:49:46,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:46,931 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:46,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6294 states. [2022-11-20 10:49:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 6294. [2022-11-20 10:49:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 6282 states have (on average 3.9118115249920407) internal successors, (24574), 6293 states have internal predecessors, (24574), 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) [2022-11-20 10:49:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 24574 transitions. [2022-11-20 10:49:47,136 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 24574 transitions. Word has length 7 [2022-11-20 10:49:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:47,137 INFO L495 AbstractCegarLoop]: Abstraction has 6294 states and 24574 transitions. [2022-11-20 10:49:47,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 24574 transitions. [2022-11-20 10:49:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:49:47,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:47,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:49:47,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash 27868156, now seen corresponding path program 1 times [2022-11-20 10:49:47,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:47,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375001082] [2022-11-20 10:49:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375001082] [2022-11-20 10:49:47,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375001082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:47,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:47,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554542651] [2022-11-20 10:49:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:47,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:47,193 INFO L87 Difference]: Start difference. First operand 6294 states and 24574 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:49:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:47,773 INFO L93 Difference]: Finished difference Result 13132 states and 50384 transitions. [2022-11-20 10:49:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:49:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-20 10:49:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:47,849 INFO L225 Difference]: With dead ends: 13132 [2022-11-20 10:49:47,850 INFO L226 Difference]: Without dead ends: 13132 [2022-11-20 10:49:47,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:49:47,853 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 163 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 22 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:49:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2022-11-20 10:49:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 8022. [2022-11-20 10:49:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 8010 states have (on average 3.918352059925094) internal successors, (31386), 8021 states have internal predecessors, (31386), 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) [2022-11-20 10:49:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 31386 transitions. [2022-11-20 10:49:48,354 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 31386 transitions. Word has length 9 [2022-11-20 10:49:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:48,355 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 31386 transitions. [2022-11-20 10:49:48,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:49:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 31386 transitions. [2022-11-20 10:49:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:49:48,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:48,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:48,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:49:48,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 69085715, now seen corresponding path program 1 times [2022-11-20 10:49:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:48,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635989062] [2022-11-20 10:49:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635989062] [2022-11-20 10:49:48,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635989062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:48,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:48,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452164457] [2022-11-20 10:49:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:48,537 INFO L87 Difference]: Start difference. First operand 8022 states and 31386 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:49:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:48,629 INFO L93 Difference]: Finished difference Result 6366 states and 24302 transitions. [2022-11-20 10:49:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-20 10:49:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:48,656 INFO L225 Difference]: With dead ends: 6366 [2022-11-20 10:49:48,656 INFO L226 Difference]: Without dead ends: 6366 [2022-11-20 10:49:48,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:48,657 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:48,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 10 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:49:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2022-11-20 10:49:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6366. [2022-11-20 10:49:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6366 states, 6358 states have (on average 3.8222711544510855) internal successors, (24302), 6365 states have internal predecessors, (24302), 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) [2022-11-20 10:49:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 24302 transitions. [2022-11-20 10:49:49,078 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 24302 transitions. Word has length 9 [2022-11-20 10:49:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 6366 states and 24302 transitions. [2022-11-20 10:49:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:49:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 24302 transitions. [2022-11-20 10:49:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:49:49,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:49,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:49:49,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 69085716, now seen corresponding path program 1 times [2022-11-20 10:49:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:49,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414689818] [2022-11-20 10:49:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414689818] [2022-11-20 10:49:49,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414689818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:49,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:49,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:49:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432935037] [2022-11-20 10:49:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:49,143 INFO L87 Difference]: Start difference. First operand 6366 states and 24302 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 10:49:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,213 INFO L93 Difference]: Finished difference Result 4710 states and 17218 transitions. [2022-11-20 10:49:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-20 10:49:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,231 INFO L225 Difference]: With dead ends: 4710 [2022-11-20 10:49:49,231 INFO L226 Difference]: Without dead ends: 4710 [2022-11-20 10:49:49,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:49,232 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:49:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-11-20 10:49:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4710. [2022-11-20 10:49:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4706 states have (on average 3.6587335316617087) internal successors, (17218), 4709 states have internal predecessors, (17218), 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) [2022-11-20 10:49:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 17218 transitions. [2022-11-20 10:49:49,373 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 17218 transitions. Word has length 9 [2022-11-20 10:49:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:49,374 INFO L495 AbstractCegarLoop]: Abstraction has 4710 states and 17218 transitions. [2022-11-20 10:49:49,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 10:49:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 17218 transitions. [2022-11-20 10:49:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:49,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:49,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:49:49,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1513109792, now seen corresponding path program 1 times [2022-11-20 10:49:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297529851] [2022-11-20 10:49:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297529851] [2022-11-20 10:49:49,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297529851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:49,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:49,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267439214] [2022-11-20 10:49:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:49:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:49:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:49,456 INFO L87 Difference]: Start difference. First operand 4710 states and 17218 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:49:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,553 INFO L93 Difference]: Finished difference Result 3794 states and 12014 transitions. [2022-11-20 10:49:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:49:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:49:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,565 INFO L225 Difference]: With dead ends: 3794 [2022-11-20 10:49:49,566 INFO L226 Difference]: Without dead ends: 3794 [2022-11-20 10:49:49,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:49:49,567 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2022-11-20 10:49:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3794. [2022-11-20 10:49:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3790 states have (on average 3.169920844327177) internal successors, (12014), 3793 states have internal predecessors, (12014), 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) [2022-11-20 10:49:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 12014 transitions. [2022-11-20 10:49:49,666 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 12014 transitions. Word has length 11 [2022-11-20 10:49:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:49,667 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 12014 transitions. [2022-11-20 10:49:49,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:49:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 12014 transitions. [2022-11-20 10:49:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:49,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:49,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:49:49,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1011467724, now seen corresponding path program 2 times [2022-11-20 10:49:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:49,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154500840] [2022-11-20 10:49:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154500840] [2022-11-20 10:49:49,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154500840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:49,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:49,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:49,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146706460] [2022-11-20 10:49:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:49,835 INFO L87 Difference]: Start difference. First operand 3794 states and 12014 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:49:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,953 INFO L93 Difference]: Finished difference Result 2194 states and 5289 transitions. [2022-11-20 10:49:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:49:49,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:49:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,958 INFO L225 Difference]: With dead ends: 2194 [2022-11-20 10:49:49,958 INFO L226 Difference]: Without dead ends: 2194 [2022-11-20 10:49:49,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:49,959 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 51 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2022-11-20 10:49:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1856. [2022-11-20 10:49:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1847 states have (on average 2.484569572279372) internal successors, (4589), 1855 states have internal predecessors, (4589), 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) [2022-11-20 10:49:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 4589 transitions. [2022-11-20 10:49:50,001 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 4589 transitions. Word has length 11 [2022-11-20 10:49:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:50,002 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 4589 transitions. [2022-11-20 10:49:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:49:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 4589 transitions. [2022-11-20 10:49:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:49:50,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:50,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:49:50,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 390447058, now seen corresponding path program 1 times [2022-11-20 10:49:50,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:50,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925772325] [2022-11-20 10:49:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:50,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925772325] [2022-11-20 10:49:50,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925772325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:50,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:50,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:50,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330872020] [2022-11-20 10:49:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:50,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:50,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:50,071 INFO L87 Difference]: Start difference. First operand 1856 states and 4589 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:50,385 INFO L93 Difference]: Finished difference Result 2774 states and 6858 transitions. [2022-11-20 10:49:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:49:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:49:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:50,391 INFO L225 Difference]: With dead ends: 2774 [2022-11-20 10:49:50,391 INFO L226 Difference]: Without dead ends: 2774 [2022-11-20 10:49:50,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:49:50,392 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 147 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:50,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 24 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:49:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-11-20 10:49:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1980. [2022-11-20 10:49:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1977 states have (on average 2.4855842185128982) internal successors, (4914), 1979 states have internal predecessors, (4914), 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) [2022-11-20 10:49:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 4914 transitions. [2022-11-20 10:49:50,439 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 4914 transitions. Word has length 13 [2022-11-20 10:49:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:50,440 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 4914 transitions. [2022-11-20 10:49:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 4914 transitions. [2022-11-20 10:49:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:49:50,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:50,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:50,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:49:50,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1335842129, now seen corresponding path program 1 times [2022-11-20 10:49:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:50,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97689841] [2022-11-20 10:49:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:50,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:50,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97689841] [2022-11-20 10:49:50,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97689841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:50,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:50,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609223662] [2022-11-20 10:49:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:50,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:50,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:50,503 INFO L87 Difference]: Start difference. First operand 1980 states and 4914 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:49:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:50,766 INFO L93 Difference]: Finished difference Result 2720 states and 6714 transitions. [2022-11-20 10:49:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-20 10:49:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:50,772 INFO L225 Difference]: With dead ends: 2720 [2022-11-20 10:49:50,772 INFO L226 Difference]: Without dead ends: 2720 [2022-11-20 10:49:50,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:50,773 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:50,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 18 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:49:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2022-11-20 10:49:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1830. [2022-11-20 10:49:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1827 states have (on average 2.4690749863163655) internal successors, (4511), 1829 states have internal predecessors, (4511), 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) [2022-11-20 10:49:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 4511 transitions. [2022-11-20 10:49:50,819 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 4511 transitions. Word has length 16 [2022-11-20 10:49:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:50,819 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 4511 transitions. [2022-11-20 10:49:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:49:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 4511 transitions. [2022-11-20 10:49:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:49:50,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:50,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:50,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:49:50,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1074426267, now seen corresponding path program 1 times [2022-11-20 10:49:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:50,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538045017] [2022-11-20 10:49:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:50,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:50,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538045017] [2022-11-20 10:49:50,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538045017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:50,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507698398] [2022-11-20 10:49:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:50,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:50,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:50,936 INFO L87 Difference]: Start difference. First operand 1830 states and 4511 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:49:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:51,193 INFO L93 Difference]: Finished difference Result 2572 states and 6316 transitions. [2022-11-20 10:49:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-20 10:49:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:51,198 INFO L225 Difference]: With dead ends: 2572 [2022-11-20 10:49:51,199 INFO L226 Difference]: Without dead ends: 2572 [2022-11-20 10:49:51,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:51,202 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:51,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 18 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:49:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-11-20 10:49:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1668. [2022-11-20 10:49:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1665 states have (on average 2.448048048048048) internal successors, (4076), 1667 states have internal predecessors, (4076), 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) [2022-11-20 10:49:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 4076 transitions. [2022-11-20 10:49:51,242 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 4076 transitions. Word has length 16 [2022-11-20 10:49:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:51,242 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 4076 transitions. [2022-11-20 10:49:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:49:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 4076 transitions. [2022-11-20 10:49:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:49:51,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:51,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:49:51,246 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,247 INFO L85 PathProgramCache]: Analyzing trace with hash 306719443, now seen corresponding path program 1 times [2022-11-20 10:49:51,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205017553] [2022-11-20 10:49:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:51,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205017553] [2022-11-20 10:49:51,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205017553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:51,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:51,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:49:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456925796] [2022-11-20 10:49:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:51,449 INFO L87 Difference]: Start difference. First operand 1668 states and 4076 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-20 10:49:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:51,711 INFO L93 Difference]: Finished difference Result 2184 states and 5061 transitions. [2022-11-20 10:49:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:49:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2022-11-20 10:49:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:51,716 INFO L225 Difference]: With dead ends: 2184 [2022-11-20 10:49:51,716 INFO L226 Difference]: Without dead ends: 2184 [2022-11-20 10:49:51,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:49:51,717 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 139 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:51,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 76 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:49:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-11-20 10:49:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1666. [2022-11-20 10:49:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1663 states have (on average 2.442573662056524) internal successors, (4062), 1665 states have internal predecessors, (4062), 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) [2022-11-20 10:49:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4062 transitions. [2022-11-20 10:49:51,767 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4062 transitions. Word has length 22 [2022-11-20 10:49:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:51,768 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 4062 transitions. [2022-11-20 10:49:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-20 10:49:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4062 transitions. [2022-11-20 10:49:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:49:51,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:51,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:49:51,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:49:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2037078569, now seen corresponding path program 2 times [2022-11-20 10:49:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083164924] [2022-11-20 10:49:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:51,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:51,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:51,842 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:49:51,843 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-11-20 10:49:51,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2022-11-20 10:49:51,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-11-20 10:49:51,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-11-20 10:49:51,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-11-20 10:49:51,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-11-20 10:49:51,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-11-20 10:49:51,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-11-20 10:49:51,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-11-20 10:49:51,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-11-20 10:49:51,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-11-20 10:49:51,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-11-20 10:49:51,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-11-20 10:49:51,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-11-20 10:49:51,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-11-20 10:49:51,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-11-20 10:49:51,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-11-20 10:49:51,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-11-20 10:49:51,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2022-11-20 10:49:51,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2022-11-20 10:49:51,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2022-11-20 10:49:51,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2022-11-20 10:49:51,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 24 remaining) [2022-11-20 10:49:51,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-11-20 10:49:51,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:49:51,854 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,860 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:49:51,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:49:51,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:49:51 BasicIcfg [2022-11-20 10:49:51,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:49:51,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:49:51,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:49:51,940 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:49:51,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:34" (3/4) ... [2022-11-20 10:49:51,943 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:49:51,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:49:51,944 INFO L158 Benchmark]: Toolchain (without parser) took 18804.52ms. Allocated memory was 138.4MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 73.9MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 366.7MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,945 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:49:51,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 661.08ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 73.7MB in the beginning and 143.4MB in the end (delta: -69.6MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.62ms. Allocated memory is still 188.7MB. Free memory was 143.4MB in the beginning and 141.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,947 INFO L158 Benchmark]: Boogie Preprocessor took 55.99ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 140.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,947 INFO L158 Benchmark]: RCFGBuilder took 618.39ms. Allocated memory is still 188.7MB. Free memory was 140.0MB in the beginning and 121.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,948 INFO L158 Benchmark]: TraceAbstraction took 17385.47ms. Allocated memory was 188.7MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 120.3MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 360.8MB. Max. memory is 16.1GB. [2022-11-20 10:49:51,948 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 5.4GB. Free memory is still 5.0GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:49:51,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 661.08ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 73.7MB in the beginning and 143.4MB in the end (delta: -69.6MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.62ms. Allocated memory is still 188.7MB. Free memory was 143.4MB in the beginning and 141.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.99ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 140.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.39ms. Allocated memory is still 188.7MB. Free memory was 140.0MB in the beginning and 121.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17385.47ms. Allocated memory was 188.7MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 120.3MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 360.8MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 5.4GB. Free memory is still 5.0GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 145 PlacesBefore, 73 PlacesAfterwards, 134 TransitionsBefore, 62 TransitionsAfterwards, 3246 CoEnabledTransitionPairs, 9 FixpointIterations, 46 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 123 TotalNumberOfCompositions, 17780 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8775, independent: 8398, independent conditional: 0, independent unconditional: 8398, dependent: 377, dependent conditional: 0, dependent unconditional: 377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2357, independent: 2300, independent conditional: 0, independent unconditional: 2300, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2357, independent: 2246, independent conditional: 0, independent unconditional: 2246, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 111, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, independent: 61, independent conditional: 0, independent unconditional: 61, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8775, independent: 6098, independent conditional: 0, independent unconditional: 6098, dependent: 320, dependent conditional: 0, dependent unconditional: 320, unknown: 2357, unknown conditional: 0, unknown unconditional: 2357] , Statistics on independence cache: Total cache size (in pairs): 587, Positive cache size: 554, Positive conditional cache size: 0, Positive unconditional cache size: 554, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 738]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 738. Possible FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [pthread_create(&t1, 0, writer, 0)=-4, r=0, t1={7:0}, t2={6:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [pthread_create(&t2, 0, reader, 0)=-3, r=0, t1={7:0}, t2={6:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L724] 2 int l; [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) [L740] 2 l = r-1 VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [pthread_create(&t3, 0, writer, 0)=-2, r=1, t1={7:0}, t2={6:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [pthread_create(&t4, 0, reader, 0)=-1, r=1, t1={7:0}, t2={6:0}, t3={8:0}, t4={5:0}, w=0, x=0, y=0] [L724] 4 int l; [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L743] 2 r = l [L745] 2 return 0; [L727] 4 l = x VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L730] 4 y = l VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L733] 4 int ly = y; VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L716] 1 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; [L738] COND TRUE 4 !(ly == lx) [L738] 4 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 17.0s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1063 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1063 mSDsluCounter, 320 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1963 IncrementalHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 205 mSDtfsCounter, 1963 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8022occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 8554 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 10:49:51,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- 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-6b4ec56 [2022-11-20 10:49:54,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:54,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:54,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:54,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:54,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:54,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:54,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:54,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:54,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:54,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:54,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:54,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:54,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:54,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:54,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:54,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:54,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:54,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:54,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:54,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:54,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:54,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:54,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:54,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:54,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:54,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:54,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:54,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:54,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:54,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:54,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:54,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:54,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:54,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:54,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:54,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:54,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:54,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:54,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:54,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:54,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 10:49:54,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:54,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:54,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:54,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:54,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:54,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:54,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:54,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:54,721 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:54,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:54,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:54,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:54,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:54,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:54,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:54,723 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:49:54,724 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:49:54,724 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:49:54,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:54,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:49:54,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:49:54,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:49:54,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:54,726 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:54,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:54,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:54,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:54,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:54,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:54,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:54,728 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:49:54,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:49:54,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:49:54,729 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_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-20 10:49:55,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:55,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:55,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:55,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:55,202 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:55,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-20 10:49:58,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:58,541 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:58,542 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-20 10:49:58,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/a243511b2/88b03eab1f88470fa8ddd34202cd4de4/FLAG2021afbcd [2022-11-20 10:49:58,576 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/data/a243511b2/88b03eab1f88470fa8ddd34202cd4de4 [2022-11-20 10:49:58,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:58,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:58,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:58,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:58,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:58,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:58" (1/1) ... [2022-11-20 10:49:58,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a68c5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:58, skipping insertion in model container [2022-11-20 10:49:58,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:58" (1/1) ... [2022-11-20 10:49:58,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:58,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:58,884 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 10:49:59,065 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-20 10:49:59,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:59,097 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:59,112 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 10:49:59,135 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-20 10:49:59,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:59,178 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:59,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59 WrapperNode [2022-11-20 10:49:59,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:59,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:59,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:59,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:59,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,228 INFO L138 Inliner]: procedures = 177, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 120 [2022-11-20 10:49:59,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:59,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:59,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:59,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:59,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:59,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:59,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:59,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:59,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (1/1) ... [2022-11-20 10:49:59,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:49:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:49:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-20 10:49:59,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-20 10:49:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:49:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:49:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:49:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:49:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:49:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:59,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-20 10:49:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-20 10:49:59,350 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:49:59,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:59,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:59,964 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:50:00,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:50:00,042 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:50:00,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:00 BoogieIcfgContainer [2022-11-20 10:50:00,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:50:00,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:50:00,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:50:00,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:50:00,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:58" (1/3) ... [2022-11-20 10:50:00,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c96b600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:00, skipping insertion in model container [2022-11-20 10:50:00,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:59" (2/3) ... [2022-11-20 10:50:00,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c96b600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:00, skipping insertion in model container [2022-11-20 10:50:00,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:00" (3/3) ... [2022-11-20 10:50:00,067 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-20 10:50:00,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:50:00,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 10:50:00,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:50:00,212 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:50:00,268 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:50:00,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 135 transitions, 302 flow [2022-11-20 10:50:00,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 135 transitions, 302 flow [2022-11-20 10:50:00,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2022-11-20 10:50:00,401 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-11-20 10:50:00,402 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:50:00,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-11-20 10:50:00,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 3246 [2022-11-20 10:50:13,741 INFO L134 LiptonReduction]: Checked pairs total: 17842 [2022-11-20 10:50:13,742 INFO L136 LiptonReduction]: Total number of compositions: 130 [2022-11-20 10:50:13,750 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 62 transitions, 156 flow [2022-11-20 10:50:14,143 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 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) [2022-11-20 10:50:14,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:50:14,186 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;@6f5b0f70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:50:14,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-20 10:50:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 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) [2022-11-20 10:50:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:50:14,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:14,215 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:50:14,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 481, now seen corresponding path program 1 times [2022-11-20 10:50:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:14,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653922797] [2022-11-20 10:50:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:14,235 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 [2022-11-20 10:50:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:14,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:14,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:50:14,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:14,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:14,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653922797] [2022-11-20 10:50:14,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653922797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:14,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:14,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:50:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637834229] [2022-11-20 10:50:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:50:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:50:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:50:14,443 INFO L87 Difference]: Start difference. First operand has 7402 states, 7362 states have (on average 4.048628090192882) internal successors, (29806), 7401 states have internal predecessors, (29806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:14,875 INFO L93 Difference]: Finished difference Result 7400 states and 28264 transitions. [2022-11-20 10:50:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:50:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:50:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:14,966 INFO L225 Difference]: With dead ends: 7400 [2022-11-20 10:50:14,966 INFO L226 Difference]: Without dead ends: 7400 [2022-11-20 10:50:14,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:50:14,971 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:14,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-11-20 10:50:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7400. [2022-11-20 10:50:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7400 states, 7362 states have (on average 3.839174137462646) internal successors, (28264), 7399 states have internal predecessors, (28264), 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) [2022-11-20 10:50:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7400 states to 7400 states and 28264 transitions. [2022-11-20 10:50:15,705 INFO L78 Accepts]: Start accepts. Automaton has 7400 states and 28264 transitions. Word has length 1 [2022-11-20 10:50:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:15,706 INFO L495 AbstractCegarLoop]: Abstraction has 7400 states and 28264 transitions. [2022-11-20 10:50:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7400 states and 28264 transitions. [2022-11-20 10:50:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:50:15,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:15,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:50:15,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:15,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 474635, now seen corresponding path program 1 times [2022-11-20 10:50:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:15,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624649083] [2022-11-20 10:50:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:15,924 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 [2022-11-20 10:50:15,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:15,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:15,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:16,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:16,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:16,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:16,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:16,264 INFO L321 Elim1Store]: treesize reduction 47, result has 36.5 percent of original size [2022-11-20 10:50:16,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 10:50:16,289 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 14 treesize of output 12 [2022-11-20 10:50:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:16,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:16,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:16,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624649083] [2022-11-20 10:50:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624649083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:16,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172284705] [2022-11-20 10:50:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:16,367 INFO L87 Difference]: Start difference. First operand 7400 states and 28264 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:16,751 INFO L93 Difference]: Finished difference Result 7072 states and 27114 transitions. [2022-11-20 10:50:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:16,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:50:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:16,881 INFO L225 Difference]: With dead ends: 7072 [2022-11-20 10:50:16,881 INFO L226 Difference]: Without dead ends: 7072 [2022-11-20 10:50:16,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:16,883 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:16,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 10 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-11-20 10:50:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7072. [2022-11-20 10:50:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7072 states, 7039 states have (on average 3.8519676090353743) internal successors, (27114), 7071 states have internal predecessors, (27114), 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) [2022-11-20 10:50:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 27114 transitions. [2022-11-20 10:50:17,327 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 27114 transitions. Word has length 3 [2022-11-20 10:50:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:17,328 INFO L495 AbstractCegarLoop]: Abstraction has 7072 states and 27114 transitions. [2022-11-20 10:50:17,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 27114 transitions. [2022-11-20 10:50:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:50:17,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:17,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:50:17,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:17,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 474637, now seen corresponding path program 1 times [2022-11-20 10:50:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:17,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405074985] [2022-11-20 10:50:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:17,543 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 [2022-11-20 10:50:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:17,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:17,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:17,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:17,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:17,782 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 10:50:17,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-20 10:50:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:17,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:17,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405074985] [2022-11-20 10:50:17,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405074985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:17,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:17,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:17,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500242130] [2022-11-20 10:50:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:17,879 INFO L87 Difference]: Start difference. First operand 7072 states and 27114 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:18,071 INFO L93 Difference]: Finished difference Result 7071 states and 27112 transitions. [2022-11-20 10:50:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:18,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:50:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:18,246 INFO L225 Difference]: With dead ends: 7071 [2022-11-20 10:50:18,247 INFO L226 Difference]: Without dead ends: 7071 [2022-11-20 10:50:18,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:18,251 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:18,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-20 10:50:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2022-11-20 10:50:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7071. [2022-11-20 10:50:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 7038 states have (on average 3.8522307473714124) internal successors, (27112), 7070 states have internal predecessors, (27112), 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) [2022-11-20 10:50:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 27112 transitions. [2022-11-20 10:50:18,773 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 27112 transitions. Word has length 3 [2022-11-20 10:50:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:18,774 INFO L495 AbstractCegarLoop]: Abstraction has 7071 states and 27112 transitions. [2022-11-20 10:50:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 27112 transitions. [2022-11-20 10:50:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:50:18,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:18,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:50:18,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:18,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 14712100, now seen corresponding path program 1 times [2022-11-20 10:50:18,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:18,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836738359] [2022-11-20 10:50:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:18,985 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 [2022-11-20 10:50:18,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:18,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:18,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:19,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:19,239 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 10:50:19,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-20 10:50:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:19,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:19,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:19,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836738359] [2022-11-20 10:50:19,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836738359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:19,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:19,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559696155] [2022-11-20 10:50:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:19,402 INFO L87 Difference]: Start difference. First operand 7071 states and 27112 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:19,609 INFO L93 Difference]: Finished difference Result 7069 states and 27108 transitions. [2022-11-20 10:50:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:50:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:19,649 INFO L225 Difference]: With dead ends: 7069 [2022-11-20 10:50:19,649 INFO L226 Difference]: Without dead ends: 7069 [2022-11-20 10:50:19,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:19,653 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:19,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-20 10:50:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7069 states. [2022-11-20 10:50:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7069 to 7069. [2022-11-20 10:50:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7036 states have (on average 3.8527572484366117) internal successors, (27108), 7068 states have internal predecessors, (27108), 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) [2022-11-20 10:50:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 27108 transitions. [2022-11-20 10:50:20,055 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 27108 transitions. Word has length 4 [2022-11-20 10:50:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 7069 states and 27108 transitions. [2022-11-20 10:50:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 27108 transitions. [2022-11-20 10:50:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:50:20,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:20,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:50:20,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:20,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:20,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 456135548, now seen corresponding path program 1 times [2022-11-20 10:50:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24163598] [2022-11-20 10:50:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:20,270 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 [2022-11-20 10:50:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:20,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:20,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:20,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:20,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:20,468 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 10:50:20,469 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-20 10:50:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:20,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:20,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:20,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24163598] [2022-11-20 10:50:20,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24163598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:20,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:20,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861136328] [2022-11-20 10:50:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:20,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:20,514 INFO L87 Difference]: Start difference. First operand 7069 states and 27108 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:20,721 INFO L93 Difference]: Finished difference Result 6997 states and 26918 transitions. [2022-11-20 10:50:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:50:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:20,761 INFO L225 Difference]: With dead ends: 6997 [2022-11-20 10:50:20,761 INFO L226 Difference]: Without dead ends: 6997 [2022-11-20 10:50:20,762 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 [2022-11-20 10:50:20,762 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:20,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 10 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-11-20 10:50:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6997. [2022-11-20 10:50:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6997 states, 6968 states have (on average 3.86308840413318) internal successors, (26918), 6996 states have internal predecessors, (26918), 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) [2022-11-20 10:50:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6997 states to 6997 states and 26918 transitions. [2022-11-20 10:50:21,227 INFO L78 Accepts]: Start accepts. Automaton has 6997 states and 26918 transitions. Word has length 5 [2022-11-20 10:50:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:21,228 INFO L495 AbstractCegarLoop]: Abstraction has 6997 states and 26918 transitions. [2022-11-20 10:50:21,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6997 states and 26918 transitions. [2022-11-20 10:50:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:50:21,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:21,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:50:21,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:21,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:21,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 456135549, now seen corresponding path program 1 times [2022-11-20 10:50:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:21,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700181150] [2022-11-20 10:50:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:21,432 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 [2022-11-20 10:50:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:21,434 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:21,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:50:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:21,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:21,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:21,660 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 10:50:21,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-20 10:50:21,673 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 18 treesize of output 16 [2022-11-20 10:50:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:21,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:21,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:21,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700181150] [2022-11-20 10:50:21,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700181150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:21,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:21,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974648897] [2022-11-20 10:50:21,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:21,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:21,729 INFO L87 Difference]: Start difference. First operand 6997 states and 26918 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:21,948 INFO L93 Difference]: Finished difference Result 6925 states and 26728 transitions. [2022-11-20 10:50:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:21,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:50:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:22,000 INFO L225 Difference]: With dead ends: 6925 [2022-11-20 10:50:22,001 INFO L226 Difference]: Without dead ends: 6925 [2022-11-20 10:50:22,001 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 [2022-11-20 10:50:22,002 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:22,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6925 states. [2022-11-20 10:50:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6925 to 6925. [2022-11-20 10:50:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6900 states have (on average 3.873623188405797) internal successors, (26728), 6924 states have internal predecessors, (26728), 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) [2022-11-20 10:50:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 26728 transitions. [2022-11-20 10:50:22,408 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 26728 transitions. Word has length 5 [2022-11-20 10:50:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:22,408 INFO L495 AbstractCegarLoop]: Abstraction has 6925 states and 26728 transitions. [2022-11-20 10:50:22,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 26728 transitions. [2022-11-20 10:50:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:50:22,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:22,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:50:22,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:22,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:22,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1253328434, now seen corresponding path program 1 times [2022-11-20 10:50:22,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:22,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068647183] [2022-11-20 10:50:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:22,627 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 [2022-11-20 10:50:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:22,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:22,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:50:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:22,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:22,790 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 10:50:22,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-20 10:50:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:22,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:22,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068647183] [2022-11-20 10:50:22,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068647183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:22,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:22,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333047388] [2022-11-20 10:50:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:22,946 INFO L87 Difference]: Start difference. First operand 6925 states and 26728 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:23,102 INFO L93 Difference]: Finished difference Result 6924 states and 26727 transitions. [2022-11-20 10:50:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:50:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:23,150 INFO L225 Difference]: With dead ends: 6924 [2022-11-20 10:50:23,151 INFO L226 Difference]: Without dead ends: 6924 [2022-11-20 10:50:23,151 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 [2022-11-20 10:50:23,152 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:23,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-20 10:50:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2022-11-20 10:50:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6924. [2022-11-20 10:50:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6924 states, 6900 states have (on average 3.873478260869565) internal successors, (26727), 6923 states have internal predecessors, (26727), 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) [2022-11-20 10:50:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6924 states to 6924 states and 26727 transitions. [2022-11-20 10:50:23,495 INFO L78 Accepts]: Start accepts. Automaton has 6924 states and 26727 transitions. Word has length 6 [2022-11-20 10:50:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:23,496 INFO L495 AbstractCegarLoop]: Abstraction has 6924 states and 26727 transitions. [2022-11-20 10:50:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6924 states and 26727 transitions. [2022-11-20 10:50:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:50:23,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:23,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:23,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:23,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:23,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 259607005, now seen corresponding path program 1 times [2022-11-20 10:50:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298407702] [2022-11-20 10:50:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:23,709 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 [2022-11-20 10:50:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:23,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:23,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:23,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:50:23,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:23,899 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-20 10:50:23,899 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-20 10:50:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:23,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:23,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:23,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298407702] [2022-11-20 10:50:23,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298407702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:23,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:23,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620538700] [2022-11-20 10:50:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:23,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:23,931 INFO L87 Difference]: Start difference. First operand 6924 states and 26727 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:24,088 INFO L93 Difference]: Finished difference Result 6771 states and 26222 transitions. [2022-11-20 10:50:24,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:24,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:50:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:24,123 INFO L225 Difference]: With dead ends: 6771 [2022-11-20 10:50:24,124 INFO L226 Difference]: Without dead ends: 6771 [2022-11-20 10:50:24,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:24,125 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:24,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2022-11-20 10:50:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6771. [2022-11-20 10:50:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 6751 states have (on average 3.8841653088431345) internal successors, (26222), 6770 states have internal predecessors, (26222), 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) [2022-11-20 10:50:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 26222 transitions. [2022-11-20 10:50:24,477 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 26222 transitions. Word has length 7 [2022-11-20 10:50:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:24,477 INFO L495 AbstractCegarLoop]: Abstraction has 6771 states and 26222 transitions. [2022-11-20 10:50:24,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 26222 transitions. [2022-11-20 10:50:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:50:24,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:24,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:24,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:24,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash 259607006, now seen corresponding path program 1 times [2022-11-20 10:50:24,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:24,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136794027] [2022-11-20 10:50:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:24,692 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 [2022-11-20 10:50:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:24,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:24,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:24,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:24,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:24,914 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-20 10:50:24,915 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-20 10:50:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:24,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:24,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:24,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136794027] [2022-11-20 10:50:24,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136794027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:24,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:24,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271755171] [2022-11-20 10:50:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:24,959 INFO L87 Difference]: Start difference. First operand 6771 states and 26222 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:25,114 INFO L93 Difference]: Finished difference Result 6618 states and 25717 transitions. [2022-11-20 10:50:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:50:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:25,147 INFO L225 Difference]: With dead ends: 6618 [2022-11-20 10:50:25,147 INFO L226 Difference]: Without dead ends: 6618 [2022-11-20 10:50:25,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:25,148 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:25,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:25,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6618 states. [2022-11-20 10:50:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 6618. [2022-11-20 10:50:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 6602 states have (on average 3.8953347470463497) internal successors, (25717), 6617 states have internal predecessors, (25717), 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) [2022-11-20 10:50:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 25717 transitions. [2022-11-20 10:50:25,567 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 25717 transitions. Word has length 7 [2022-11-20 10:50:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:25,567 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 25717 transitions. [2022-11-20 10:50:25,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 25717 transitions. [2022-11-20 10:50:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:50:25,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:25,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:25,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:25,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 333018567, now seen corresponding path program 1 times [2022-11-20 10:50:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:25,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350997616] [2022-11-20 10:50:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:25,782 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 [2022-11-20 10:50:25,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:25,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:25,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 10:50:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:25,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:25,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:25,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:25,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:25,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350997616] [2022-11-20 10:50:25,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350997616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:25,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:25,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:25,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218008175] [2022-11-20 10:50:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:25,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:25,949 INFO L87 Difference]: Start difference. First operand 6618 states and 25717 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:50:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:26,610 INFO L93 Difference]: Finished difference Result 7422 states and 29213 transitions. [2022-11-20 10:50:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:26,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-20 10:50:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:26,828 INFO L225 Difference]: With dead ends: 7422 [2022-11-20 10:50:26,829 INFO L226 Difference]: Without dead ends: 7422 [2022-11-20 10:50:26,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:26,831 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:26,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 24 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2022-11-20 10:50:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 6750. [2022-11-20 10:50:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6750 states, 6734 states have (on average 3.9092664092664093) internal successors, (26325), 6749 states have internal predecessors, (26325), 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) [2022-11-20 10:50:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 26325 transitions. [2022-11-20 10:50:27,069 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 26325 transitions. Word has length 9 [2022-11-20 10:50:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:27,069 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 26325 transitions. [2022-11-20 10:50:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 10:50:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 26325 transitions. [2022-11-20 10:50:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:50:27,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:27,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:27,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:27,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:27,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 374238048, now seen corresponding path program 1 times [2022-11-20 10:50:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:27,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018999124] [2022-11-20 10:50:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:27,286 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 [2022-11-20 10:50:27,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:27,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:27,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Waiting until timeout for monitored process [2022-11-20 10:50:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:27,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:27,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:27,492 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 10:50:27,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 25 [2022-11-20 10:50:27,518 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 10:50:27,518 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 27 treesize of output 23 [2022-11-20 10:50:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:27,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:27,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:27,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018999124] [2022-11-20 10:50:27,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018999124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:27,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:27,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32328137] [2022-11-20 10:50:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:27,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:27,790 INFO L87 Difference]: Start difference. First operand 6750 states and 26325 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 10:50:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:28,007 INFO L93 Difference]: Finished difference Result 6749 states and 26320 transitions. [2022-11-20 10:50:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-20 10:50:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:28,029 INFO L225 Difference]: With dead ends: 6749 [2022-11-20 10:50:28,029 INFO L226 Difference]: Without dead ends: 6749 [2022-11-20 10:50:28,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:28,029 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:28,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-20 10:50:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2022-11-20 10:50:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6749. [2022-11-20 10:50:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6733 states have (on average 3.909104411109461) internal successors, (26320), 6748 states have internal predecessors, (26320), 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) [2022-11-20 10:50:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 26320 transitions. [2022-11-20 10:50:28,241 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 26320 transitions. Word has length 9 [2022-11-20 10:50:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:28,241 INFO L495 AbstractCegarLoop]: Abstraction has 6749 states and 26320 transitions. [2022-11-20 10:50:28,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 10:50:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 26320 transitions. [2022-11-20 10:50:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:50:28,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:28,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:28,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:28,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 374238049, now seen corresponding path program 1 times [2022-11-20 10:50:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:28,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142922616] [2022-11-20 10:50:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:28,456 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 [2022-11-20 10:50:28,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:28,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:28,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:28,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:28,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:28,659 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-20 10:50:28,659 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-20 10:50:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:28,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:28,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142922616] [2022-11-20 10:50:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142922616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:28,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:28,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580288641] [2022-11-20 10:50:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:28,763 INFO L87 Difference]: Start difference. First operand 6749 states and 26320 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 10:50:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:28,908 INFO L93 Difference]: Finished difference Result 5093 states and 19461 transitions. [2022-11-20 10:50:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:28,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 10:50:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:29,062 INFO L225 Difference]: With dead ends: 5093 [2022-11-20 10:50:29,062 INFO L226 Difference]: Without dead ends: 5093 [2022-11-20 10:50:29,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:29,064 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:29,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2022-11-20 10:50:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 5093. [2022-11-20 10:50:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5085 states have (on average 3.8271386430678467) internal successors, (19461), 5092 states have internal predecessors, (19461), 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) [2022-11-20 10:50:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 19461 transitions. [2022-11-20 10:50:29,214 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 19461 transitions. Word has length 9 [2022-11-20 10:50:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:29,214 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 19461 transitions. [2022-11-20 10:50:29,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 10:50:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 19461 transitions. [2022-11-20 10:50:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:50:29,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:29,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:29,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:29,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:29,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1179927241, now seen corresponding path program 1 times [2022-11-20 10:50:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912276849] [2022-11-20 10:50:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:29,428 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 [2022-11-20 10:50:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:29,430 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:29,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 10:50:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:29,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:29,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:50:29,631 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 94 treesize of output 100 [2022-11-20 10:50:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:29,709 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-20 10:50:29,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 28 [2022-11-20 10:50:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:30,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:30,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:30,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912276849] [2022-11-20 10:50:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912276849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:30,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:30,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000511530] [2022-11-20 10:50:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:30,014 INFO L87 Difference]: Start difference. First operand 5093 states and 19461 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 10:50:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:30,257 INFO L93 Difference]: Finished difference Result 5091 states and 19451 transitions. [2022-11-20 10:50:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-20 10:50:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:30,281 INFO L225 Difference]: With dead ends: 5091 [2022-11-20 10:50:30,282 INFO L226 Difference]: Without dead ends: 5091 [2022-11-20 10:50:30,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:30,283 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:50:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2022-11-20 10:50:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 5091. [2022-11-20 10:50:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 5083 states have (on average 3.8266771591579776) internal successors, (19451), 5090 states have internal predecessors, (19451), 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) [2022-11-20 10:50:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 19451 transitions. [2022-11-20 10:50:30,486 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 19451 transitions. Word has length 10 [2022-11-20 10:50:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 19451 transitions. [2022-11-20 10:50:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 10:50:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 19451 transitions. [2022-11-20 10:50:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:50:30,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:30,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:30,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:30,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:30,700 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1874566724, now seen corresponding path program 1 times [2022-11-20 10:50:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:30,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113764278] [2022-11-20 10:50:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:30,702 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 [2022-11-20 10:50:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:30,703 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 10:50:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:30,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:30,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:30,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:50:30,897 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 94 treesize of output 100 [2022-11-20 10:50:30,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:30,980 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-20 10:50:30,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 28 [2022-11-20 10:50:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:31,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:31,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:31,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113764278] [2022-11-20 10:50:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113764278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:31,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:31,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676869691] [2022-11-20 10:50:31,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:31,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:31,280 INFO L87 Difference]: Start difference. First operand 5091 states and 19451 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 10:50:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:31,388 INFO L93 Difference]: Finished difference Result 5086 states and 19426 transitions. [2022-11-20 10:50:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-20 10:50:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:31,413 INFO L225 Difference]: With dead ends: 5086 [2022-11-20 10:50:31,413 INFO L226 Difference]: Without dead ends: 5086 [2022-11-20 10:50:31,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:31,414 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:31,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:50:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-11-20 10:50:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-11-20 10:50:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5078 states have (on average 3.8255218589996063) internal successors, (19426), 5085 states have internal predecessors, (19426), 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) [2022-11-20 10:50:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 19426 transitions. [2022-11-20 10:50:31,606 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 19426 transitions. Word has length 10 [2022-11-20 10:50:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:31,606 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 19426 transitions. [2022-11-20 10:50:31,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-20 10:50:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 19426 transitions. [2022-11-20 10:50:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:50:31,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:31,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:31,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:31,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1283521576, now seen corresponding path program 1 times [2022-11-20 10:50:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247944745] [2022-11-20 10:50:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:31,821 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 [2022-11-20 10:50:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:31,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:31,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:31,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:31,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:32,077 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:32,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:32,094 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 10 treesize of output 8 [2022-11-20 10:50:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:32,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:32,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:32,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247944745] [2022-11-20 10:50:32,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247944745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:32,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:32,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579826129] [2022-11-20 10:50:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:32,357 INFO L87 Difference]: Start difference. First operand 5086 states and 19426 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 10:50:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:32,442 INFO L93 Difference]: Finished difference Result 5081 states and 19400 transitions. [2022-11-20 10:50:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:32,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-20 10:50:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:32,463 INFO L225 Difference]: With dead ends: 5081 [2022-11-20 10:50:32,463 INFO L226 Difference]: Without dead ends: 5081 [2022-11-20 10:50:32,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:32,464 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:32,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-20 10:50:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5081 states. [2022-11-20 10:50:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5081 to 5081. [2022-11-20 10:50:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5073 states have (on average 3.824167159471713) internal successors, (19400), 5080 states have internal predecessors, (19400), 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) [2022-11-20 10:50:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 19400 transitions. [2022-11-20 10:50:32,605 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 19400 transitions. Word has length 10 [2022-11-20 10:50:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:32,605 INFO L495 AbstractCegarLoop]: Abstraction has 5081 states and 19400 transitions. [2022-11-20 10:50:32,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 10:50:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 19400 transitions. [2022-11-20 10:50:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:50:32,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:32,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:32,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:32,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:32,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1283522227, now seen corresponding path program 1 times [2022-11-20 10:50:32,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:32,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165247730] [2022-11-20 10:50:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:32,819 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 [2022-11-20 10:50:32,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:32,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:32,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 10:50:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:32,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:33,078 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:33,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:33,092 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 10 treesize of output 8 [2022-11-20 10:50:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:33,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:33,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:33,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165247730] [2022-11-20 10:50:33,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165247730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:33,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:33,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618253913] [2022-11-20 10:50:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:33,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:33,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:33,283 INFO L87 Difference]: Start difference. First operand 5081 states and 19400 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 10:50:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:33,372 INFO L93 Difference]: Finished difference Result 5079 states and 19390 transitions. [2022-11-20 10:50:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:33,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-20 10:50:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:33,392 INFO L225 Difference]: With dead ends: 5079 [2022-11-20 10:50:33,392 INFO L226 Difference]: Without dead ends: 5079 [2022-11-20 10:50:33,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:33,393 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:33,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-11-20 10:50:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2022-11-20 10:50:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 5079. [2022-11-20 10:50:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 5071 states have (on average 3.8237034115559063) internal successors, (19390), 5078 states have internal predecessors, (19390), 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) [2022-11-20 10:50:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 19390 transitions. [2022-11-20 10:50:33,502 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 19390 transitions. Word has length 10 [2022-11-20 10:50:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:33,502 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 19390 transitions. [2022-11-20 10:50:33,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 10:50:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 19390 transitions. [2022-11-20 10:50:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:50:33,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:33,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:33,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:33,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:33,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 88819415, now seen corresponding path program 1 times [2022-11-20 10:50:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:33,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991431680] [2022-11-20 10:50:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:33,705 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 [2022-11-20 10:50:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:33,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:33,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 10:50:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:33,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:33,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:33,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:33,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:33,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991431680] [2022-11-20 10:50:33,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991431680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:33,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:33,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541367013] [2022-11-20 10:50:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:33,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:33,805 INFO L87 Difference]: Start difference. First operand 5079 states and 19390 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:34,015 INFO L93 Difference]: Finished difference Result 4010 states and 13074 transitions. [2022-11-20 10:50:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:34,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:50:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:34,032 INFO L225 Difference]: With dead ends: 4010 [2022-11-20 10:50:34,032 INFO L226 Difference]: Without dead ends: 4010 [2022-11-20 10:50:34,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:34,033 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:34,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 26 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2022-11-20 10:50:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 4010. [2022-11-20 10:50:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4002 states have (on average 3.266866566716642) internal successors, (13074), 4009 states have internal predecessors, (13074), 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) [2022-11-20 10:50:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 13074 transitions. [2022-11-20 10:50:34,144 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 13074 transitions. Word has length 11 [2022-11-20 10:50:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:34,145 INFO L495 AbstractCegarLoop]: Abstraction has 4010 states and 13074 transitions. [2022-11-20 10:50:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 13074 transitions. [2022-11-20 10:50:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:50:34,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:34,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:34,358 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2091729705, now seen corresponding path program 2 times [2022-11-20 10:50:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:34,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372779410] [2022-11-20 10:50:34,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:34,359 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 [2022-11-20 10:50:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:34,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:34,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:34,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:34,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:34,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:34,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:34,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372779410] [2022-11-20 10:50:34,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372779410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:34,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:34,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875595641] [2022-11-20 10:50:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:34,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:34,483 INFO L87 Difference]: Start difference. First operand 4010 states and 13074 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:34,732 INFO L93 Difference]: Finished difference Result 5100 states and 15836 transitions. [2022-11-20 10:50:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:50:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:34,749 INFO L225 Difference]: With dead ends: 5100 [2022-11-20 10:50:34,749 INFO L226 Difference]: Without dead ends: 5100 [2022-11-20 10:50:34,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:34,749 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:34,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 46 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2022-11-20 10:50:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 3640. [2022-11-20 10:50:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3624 states have (on average 3.2213024282560707) internal successors, (11674), 3639 states have internal predecessors, (11674), 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) [2022-11-20 10:50:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 11674 transitions. [2022-11-20 10:50:34,853 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 11674 transitions. Word has length 11 [2022-11-20 10:50:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:34,853 INFO L495 AbstractCegarLoop]: Abstraction has 3640 states and 11674 transitions. [2022-11-20 10:50:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 11674 transitions. [2022-11-20 10:50:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:50:34,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:34,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 10:50:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:35,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2017972876, now seen corresponding path program 1 times [2022-11-20 10:50:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:35,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838097137] [2022-11-20 10:50:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:35,056 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 [2022-11-20 10:50:35,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:35,057 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:35,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 10:50:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:35,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:35,321 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:35,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:35,338 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 10 treesize of output 8 [2022-11-20 10:50:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:35,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:35,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838097137] [2022-11-20 10:50:35,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838097137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:35,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:35,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578869480] [2022-11-20 10:50:35,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:35,564 INFO L87 Difference]: Start difference. First operand 3640 states and 11674 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:35,652 INFO L93 Difference]: Finished difference Result 3691 states and 11884 transitions. [2022-11-20 10:50:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:50:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:35,666 INFO L225 Difference]: With dead ends: 3691 [2022-11-20 10:50:35,667 INFO L226 Difference]: Without dead ends: 3691 [2022-11-20 10:50:35,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:35,668 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:35,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-20 10:50:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2022-11-20 10:50:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2022-11-20 10:50:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3675 states have (on average 3.2337414965986393) internal successors, (11884), 3690 states have internal predecessors, (11884), 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) [2022-11-20 10:50:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 11884 transitions. [2022-11-20 10:50:35,797 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 11884 transitions. Word has length 11 [2022-11-20 10:50:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:35,798 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 11884 transitions. [2022-11-20 10:50:35,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 11884 transitions. [2022-11-20 10:50:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:50:35,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:35,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:35,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:36,011 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:36,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 553893546, now seen corresponding path program 2 times [2022-11-20 10:50:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:36,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766575980] [2022-11-20 10:50:36,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:36,014 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 [2022-11-20 10:50:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:36,016 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:36,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Waiting until timeout for monitored process [2022-11-20 10:50:36,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:36,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:36,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:36,269 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:36,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:36,280 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 10 treesize of output 8 [2022-11-20 10:50:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:36,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:36,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:36,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766575980] [2022-11-20 10:50:36,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766575980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:36,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:36,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:36,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147598682] [2022-11-20 10:50:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:36,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:36,531 INFO L87 Difference]: Start difference. First operand 3691 states and 11884 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:36,613 INFO L93 Difference]: Finished difference Result 3660 states and 11719 transitions. [2022-11-20 10:50:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 10:50:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:36,628 INFO L225 Difference]: With dead ends: 3660 [2022-11-20 10:50:36,628 INFO L226 Difference]: Without dead ends: 3660 [2022-11-20 10:50:36,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:36,629 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:36,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-20 10:50:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2022-11-20 10:50:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3609. [2022-11-20 10:50:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3593 states have (on average 3.2031728360701366) internal successors, (11509), 3608 states have internal predecessors, (11509), 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) [2022-11-20 10:50:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 11509 transitions. [2022-11-20 10:50:36,734 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 11509 transitions. Word has length 11 [2022-11-20 10:50:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:36,735 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 11509 transitions. [2022-11-20 10:50:36,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 10:50:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 11509 transitions. [2022-11-20 10:50:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:50:36,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:36,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:36,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:36,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:36,937 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1075376596, now seen corresponding path program 1 times [2022-11-20 10:50:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305859917] [2022-11-20 10:50:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:36,938 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 [2022-11-20 10:50:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:36,939 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:36,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:37,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:37,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:37,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:37,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305859917] [2022-11-20 10:50:37,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305859917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:37,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:37,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743855422] [2022-11-20 10:50:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:37,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:37,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:37,106 INFO L87 Difference]: Start difference. First operand 3609 states and 11509 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-20 10:50:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:37,803 INFO L93 Difference]: Finished difference Result 7123 states and 22978 transitions. [2022-11-20 10:50:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:50:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:50:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:37,826 INFO L225 Difference]: With dead ends: 7123 [2022-11-20 10:50:37,826 INFO L226 Difference]: Without dead ends: 7123 [2022-11-20 10:50:37,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:37,827 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 198 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:37,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 38 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:50:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-11-20 10:50:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 4420. [2022-11-20 10:50:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4408 states have (on average 3.2581669691470054) internal successors, (14362), 4419 states have internal predecessors, (14362), 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) [2022-11-20 10:50:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14362 transitions. [2022-11-20 10:50:38,000 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14362 transitions. Word has length 12 [2022-11-20 10:50:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:38,000 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 14362 transitions. [2022-11-20 10:50:38,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-20 10:50:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14362 transitions. [2022-11-20 10:50:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:50:38,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:38,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:38,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:38,204 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1034157115, now seen corresponding path program 1 times [2022-11-20 10:50:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:38,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073533656] [2022-11-20 10:50:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:38,205 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 [2022-11-20 10:50:38,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:38,206 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:38,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 10:50:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:38,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:38,460 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:38,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:38,471 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 10 treesize of output 8 [2022-11-20 10:50:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:38,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:38,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:38,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073533656] [2022-11-20 10:50:38,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073533656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:38,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:38,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810282568] [2022-11-20 10:50:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:38,736 INFO L87 Difference]: Start difference. First operand 4420 states and 14362 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 10:50:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:38,829 INFO L93 Difference]: Finished difference Result 4432 states and 14390 transitions. [2022-11-20 10:50:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:50:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:38,847 INFO L225 Difference]: With dead ends: 4432 [2022-11-20 10:50:38,847 INFO L226 Difference]: Without dead ends: 4432 [2022-11-20 10:50:38,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:38,848 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:38,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-20 10:50:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-11-20 10:50:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4424. [2022-11-20 10:50:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4412 states have (on average 3.257932910244787) internal successors, (14374), 4423 states have internal predecessors, (14374), 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) [2022-11-20 10:50:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 14374 transitions. [2022-11-20 10:50:38,992 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 14374 transitions. Word has length 12 [2022-11-20 10:50:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 14374 transitions. [2022-11-20 10:50:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 10:50:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 14374 transitions. [2022-11-20 10:50:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:50:38,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:38,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:39,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:39,207 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash -263760913, now seen corresponding path program 2 times [2022-11-20 10:50:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:39,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489472861] [2022-11-20 10:50:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:39,208 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 [2022-11-20 10:50:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:39,209 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:39,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (24)] Waiting until timeout for monitored process [2022-11-20 10:50:39,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:39,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:39,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:39,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:39,413 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 10:50:39,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 25 [2022-11-20 10:50:39,435 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 10:50:39,435 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 27 treesize of output 23 [2022-11-20 10:50:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:39,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:39,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489472861] [2022-11-20 10:50:39,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489472861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:39,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:39,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478188362] [2022-11-20 10:50:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:39,764 INFO L87 Difference]: Start difference. First operand 4424 states and 14374 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 10:50:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:39,843 INFO L93 Difference]: Finished difference Result 4423 states and 14370 transitions. [2022-11-20 10:50:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:50:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:39,856 INFO L225 Difference]: With dead ends: 4423 [2022-11-20 10:50:39,856 INFO L226 Difference]: Without dead ends: 4423 [2022-11-20 10:50:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:39,857 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:39,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-20 10:50:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-11-20 10:50:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4419. [2022-11-20 10:50:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4407 states have (on average 3.257998638529612) internal successors, (14358), 4418 states have internal predecessors, (14358), 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) [2022-11-20 10:50:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 14358 transitions. [2022-11-20 10:50:39,963 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 14358 transitions. Word has length 12 [2022-11-20 10:50:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:39,963 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 14358 transitions. [2022-11-20 10:50:39,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 10:50:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 14358 transitions. [2022-11-20 10:50:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:50:39,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:39,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:39,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:40,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:40,165 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:40,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1867349837, now seen corresponding path program 1 times [2022-11-20 10:50:40,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:40,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568723014] [2022-11-20 10:50:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:40,166 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 [2022-11-20 10:50:40,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:40,167 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:40,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:40,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:40,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:40,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:40,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568723014] [2022-11-20 10:50:40,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568723014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:40,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:40,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43749982] [2022-11-20 10:50:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:40,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:40,314 INFO L87 Difference]: Start difference. First operand 4419 states and 14358 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-20 10:50:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:40,630 INFO L93 Difference]: Finished difference Result 2780 states and 6935 transitions. [2022-11-20 10:50:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:50:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:40,638 INFO L225 Difference]: With dead ends: 2780 [2022-11-20 10:50:40,638 INFO L226 Difference]: Without dead ends: 2780 [2022-11-20 10:50:40,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:40,639 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:40,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 80 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:50:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2022-11-20 10:50:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2368. [2022-11-20 10:50:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2350 states have (on average 2.5770212765957448) internal successors, (6056), 2367 states have internal predecessors, (6056), 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) [2022-11-20 10:50:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 6056 transitions. [2022-11-20 10:50:40,704 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 6056 transitions. Word has length 12 [2022-11-20 10:50:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:40,705 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 6056 transitions. [2022-11-20 10:50:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-20 10:50:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 6056 transitions. [2022-11-20 10:50:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:50:40,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:40,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:40,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:40,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:40,918 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -809311308, now seen corresponding path program 1 times [2022-11-20 10:50:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584666671] [2022-11-20 10:50:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:40,919 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 [2022-11-20 10:50:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:40,921 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:40,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 10:50:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:41,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:41,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:41,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:41,126 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 10:50:41,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 25 [2022-11-20 10:50:41,147 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 10:50:41,148 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 27 treesize of output 23 [2022-11-20 10:50:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:41,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:41,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:41,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584666671] [2022-11-20 10:50:41,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584666671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:41,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:41,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252205907] [2022-11-20 10:50:41,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:41,506 INFO L87 Difference]: Start difference. First operand 2368 states and 6056 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 10:50:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:41,583 INFO L93 Difference]: Finished difference Result 2367 states and 6052 transitions. [2022-11-20 10:50:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:50:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:41,589 INFO L225 Difference]: With dead ends: 2367 [2022-11-20 10:50:41,590 INFO L226 Difference]: Without dead ends: 2367 [2022-11-20 10:50:41,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:41,591 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:41,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:50:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-11-20 10:50:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2367. [2022-11-20 10:50:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2349 states have (on average 2.5764154959557257) internal successors, (6052), 2366 states have internal predecessors, (6052), 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) [2022-11-20 10:50:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 6052 transitions. [2022-11-20 10:50:41,653 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 6052 transitions. Word has length 12 [2022-11-20 10:50:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:41,653 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 6052 transitions. [2022-11-20 10:50:41,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-20 10:50:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6052 transitions. [2022-11-20 10:50:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:41,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:41,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:41,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:41,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:41,867 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1163989631, now seen corresponding path program 1 times [2022-11-20 10:50:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:41,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758635140] [2022-11-20 10:50:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:41,868 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 [2022-11-20 10:50:41,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:41,870 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:41,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (27)] Waiting until timeout for monitored process [2022-11-20 10:50:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:42,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:42,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:42,145 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:42,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:42,156 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 10 treesize of output 8 [2022-11-20 10:50:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:42,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:42,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758635140] [2022-11-20 10:50:42,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758635140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498141295] [2022-11-20 10:50:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:42,446 INFO L87 Difference]: Start difference. First operand 2367 states and 6052 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:42,516 INFO L93 Difference]: Finished difference Result 2419 states and 6170 transitions. [2022-11-20 10:50:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:42,524 INFO L225 Difference]: With dead ends: 2419 [2022-11-20 10:50:42,524 INFO L226 Difference]: Without dead ends: 2419 [2022-11-20 10:50:42,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:42,525 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:42,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-20 10:50:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-20 10:50:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2387. [2022-11-20 10:50:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2369 states have (on average 2.5736597720557195) internal successors, (6097), 2386 states have internal predecessors, (6097), 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) [2022-11-20 10:50:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 6097 transitions. [2022-11-20 10:50:42,590 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 6097 transitions. Word has length 13 [2022-11-20 10:50:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:42,590 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 6097 transitions. [2022-11-20 10:50:42,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 6097 transitions. [2022-11-20 10:50:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:42,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:42,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:42,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:42,803 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635575, now seen corresponding path program 2 times [2022-11-20 10:50:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:42,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49802023] [2022-11-20 10:50:42,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:42,804 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 [2022-11-20 10:50:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:42,805 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:42,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (28)] Waiting until timeout for monitored process [2022-11-20 10:50:42,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:42,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:42,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:42,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:43,042 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:43,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:43,055 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 10 treesize of output 8 [2022-11-20 10:50:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:43,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:43,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:43,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49802023] [2022-11-20 10:50:43,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49802023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:43,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271296049] [2022-11-20 10:50:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:43,338 INFO L87 Difference]: Start difference. First operand 2387 states and 6097 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:43,408 INFO L93 Difference]: Finished difference Result 2455 states and 6253 transitions. [2022-11-20 10:50:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:43,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:43,413 INFO L225 Difference]: With dead ends: 2455 [2022-11-20 10:50:43,413 INFO L226 Difference]: Without dead ends: 2455 [2022-11-20 10:50:43,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:43,414 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:43,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-11-20 10:50:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-11-20 10:50:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2447. [2022-11-20 10:50:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2429 states have (on average 2.5677233429394812) internal successors, (6237), 2446 states have internal predecessors, (6237), 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) [2022-11-20 10:50:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 6237 transitions. [2022-11-20 10:50:43,460 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 6237 transitions. Word has length 13 [2022-11-20 10:50:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:43,460 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 6237 transitions. [2022-11-20 10:50:43,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 6237 transitions. [2022-11-20 10:50:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:43,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:43,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:43,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:43,662 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1994098669, now seen corresponding path program 1 times [2022-11-20 10:50:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:43,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357468833] [2022-11-20 10:50:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:43,663 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 [2022-11-20 10:50:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:43,664 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:43,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 10:50:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:43,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:43,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:43,903 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:43,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:43,921 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 10 treesize of output 8 [2022-11-20 10:50:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:44,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:44,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357468833] [2022-11-20 10:50:44,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357468833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:44,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:44,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823690804] [2022-11-20 10:50:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:44,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:44,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:44,194 INFO L87 Difference]: Start difference. First operand 2447 states and 6237 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:44,267 INFO L93 Difference]: Finished difference Result 2460 states and 6269 transitions. [2022-11-20 10:50:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:44,275 INFO L225 Difference]: With dead ends: 2460 [2022-11-20 10:50:44,275 INFO L226 Difference]: Without dead ends: 2460 [2022-11-20 10:50:44,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:44,276 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:44,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-11-20 10:50:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-11-20 10:50:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2452. [2022-11-20 10:50:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2434 states have (on average 2.569022185702547) internal successors, (6253), 2451 states have internal predecessors, (6253), 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) [2022-11-20 10:50:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 6253 transitions. [2022-11-20 10:50:44,323 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 6253 transitions. Word has length 13 [2022-11-20 10:50:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:44,323 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 6253 transitions. [2022-11-20 10:50:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 6253 transitions. [2022-11-20 10:50:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:44,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:44,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:44,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:44,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:44,533 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1994099320, now seen corresponding path program 1 times [2022-11-20 10:50:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:44,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731518877] [2022-11-20 10:50:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:44,534 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 [2022-11-20 10:50:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:44,539 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:44,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (30)] Waiting until timeout for monitored process [2022-11-20 10:50:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:44,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:44,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:44,777 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-20 10:50:44,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 25 [2022-11-20 10:50:44,800 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 10:50:44,800 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 27 treesize of output 23 [2022-11-20 10:50:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:45,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:45,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:45,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731518877] [2022-11-20 10:50:45,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731518877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:45,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:45,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670185524] [2022-11-20 10:50:45,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:45,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:45,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:45,211 INFO L87 Difference]: Start difference. First operand 2452 states and 6253 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:45,280 INFO L93 Difference]: Finished difference Result 2450 states and 6249 transitions. [2022-11-20 10:50:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:45,287 INFO L225 Difference]: With dead ends: 2450 [2022-11-20 10:50:45,287 INFO L226 Difference]: Without dead ends: 2450 [2022-11-20 10:50:45,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:45,288 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:45,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 10:50:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-11-20 10:50:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2022-11-20 10:50:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2432 states have (on average 2.5694901315789473) internal successors, (6249), 2449 states have internal predecessors, (6249), 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) [2022-11-20 10:50:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 6249 transitions. [2022-11-20 10:50:45,335 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 6249 transitions. Word has length 13 [2022-11-20 10:50:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:45,336 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 6249 transitions. [2022-11-20 10:50:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 6249 transitions. [2022-11-20 10:50:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:45,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:45,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:45,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:45,538 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 413346617, now seen corresponding path program 3 times [2022-11-20 10:50:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373252550] [2022-11-20 10:50:45,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:45,539 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 [2022-11-20 10:50:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:45,540 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:45,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (31)] Waiting until timeout for monitored process [2022-11-20 10:50:45,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 10:50:45,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:45,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:45,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:45,790 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:45,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:45,809 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 10 treesize of output 8 [2022-11-20 10:50:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:46,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:46,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373252550] [2022-11-20 10:50:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373252550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:46,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:46,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344040944] [2022-11-20 10:50:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:46,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:46,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:46,095 INFO L87 Difference]: Start difference. First operand 2450 states and 6249 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:46,157 INFO L93 Difference]: Finished difference Result 2490 states and 6339 transitions. [2022-11-20 10:50:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:46,163 INFO L225 Difference]: With dead ends: 2490 [2022-11-20 10:50:46,163 INFO L226 Difference]: Without dead ends: 2490 [2022-11-20 10:50:46,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:46,163 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:46,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2022-11-20 10:50:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-11-20 10:50:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2462. [2022-11-20 10:50:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2444 states have (on average 2.568330605564648) internal successors, (6277), 2461 states have internal predecessors, (6277), 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) [2022-11-20 10:50:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 6277 transitions. [2022-11-20 10:50:46,210 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 6277 transitions. Word has length 13 [2022-11-20 10:50:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:46,211 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 6277 transitions. [2022-11-20 10:50:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 6277 transitions. [2022-11-20 10:50:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:46,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:46,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:46,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:46,415 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:46,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash 413347113, now seen corresponding path program 2 times [2022-11-20 10:50:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:46,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382901655] [2022-11-20 10:50:46,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:46,416 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 [2022-11-20 10:50:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:46,417 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:46,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 10:50:46,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:46,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:46,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:46,665 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-20 10:50:46,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-20 10:50:46,678 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 10 treesize of output 8 [2022-11-20 10:50:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:46,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:46,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382901655] [2022-11-20 10:50:46,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382901655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:46,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:46,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373571393] [2022-11-20 10:50:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:46,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:46,955 INFO L87 Difference]: Start difference. First operand 2462 states and 6277 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:47,014 INFO L93 Difference]: Finished difference Result 2467 states and 6293 transitions. [2022-11-20 10:50:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:47,019 INFO L225 Difference]: With dead ends: 2467 [2022-11-20 10:50:47,019 INFO L226 Difference]: Without dead ends: 2467 [2022-11-20 10:50:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:47,020 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:47,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2022-11-20 10:50:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-11-20 10:50:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2458. [2022-11-20 10:50:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 2440 states have (on average 2.567622950819672) internal successors, (6265), 2457 states have internal predecessors, (6265), 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) [2022-11-20 10:50:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 6265 transitions. [2022-11-20 10:50:47,066 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 6265 transitions. Word has length 13 [2022-11-20 10:50:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:47,067 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 6265 transitions. [2022-11-20 10:50:47,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 6265 transitions. [2022-11-20 10:50:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:47,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:47,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:47,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-20 10:50:47,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:47,271 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash 700029599, now seen corresponding path program 1 times [2022-11-20 10:50:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:47,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879216195] [2022-11-20 10:50:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:47,272 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 [2022-11-20 10:50:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:47,273 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:47,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (33)] Waiting until timeout for monitored process [2022-11-20 10:50:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:47,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:47,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:47,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:47,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:47,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879216195] [2022-11-20 10:50:47,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879216195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:47,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:47,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195451794] [2022-11-20 10:50:47,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:47,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:47,456 INFO L87 Difference]: Start difference. First operand 2458 states and 6265 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:48,020 INFO L93 Difference]: Finished difference Result 2644 states and 6792 transitions. [2022-11-20 10:50:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:48,027 INFO L225 Difference]: With dead ends: 2644 [2022-11-20 10:50:48,027 INFO L226 Difference]: Without dead ends: 2644 [2022-11-20 10:50:48,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:48,028 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:48,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 27 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2022-11-20 10:50:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2474. [2022-11-20 10:50:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2458 states have (on average 2.5699755899104963) internal successors, (6317), 2473 states have internal predecessors, (6317), 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) [2022-11-20 10:50:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6317 transitions. [2022-11-20 10:50:48,078 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6317 transitions. Word has length 13 [2022-11-20 10:50:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:48,078 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 6317 transitions. [2022-11-20 10:50:48,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6317 transitions. [2022-11-20 10:50:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:50:48,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:48,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:48,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (33)] Ended with exit code 0 [2022-11-20 10:50:48,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:48,280 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 662860921, now seen corresponding path program 4 times [2022-11-20 10:50:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:48,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020296862] [2022-11-20 10:50:48,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:50:48,281 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 [2022-11-20 10:50:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:48,282 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:48,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 10:50:48,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:50:48,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:48,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:48,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:48,544 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2022-11-20 10:50:48,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 28 [2022-11-20 10:50:48,555 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 10 treesize of output 8 [2022-11-20 10:50:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:48,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:48,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020296862] [2022-11-20 10:50:48,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020296862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:48,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:48,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:50:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403963390] [2022-11-20 10:50:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:48,665 INFO L87 Difference]: Start difference. First operand 2474 states and 6317 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:48,767 INFO L93 Difference]: Finished difference Result 1963 states and 4845 transitions. [2022-11-20 10:50:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:50:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:48,771 INFO L225 Difference]: With dead ends: 1963 [2022-11-20 10:50:48,772 INFO L226 Difference]: Without dead ends: 1963 [2022-11-20 10:50:48,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:48,772 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:48,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-11-20 10:50:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1870. [2022-11-20 10:50:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1862 states have (on average 2.485499462943072) internal successors, (4628), 1869 states have internal predecessors, (4628), 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) [2022-11-20 10:50:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4628 transitions. [2022-11-20 10:50:48,808 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4628 transitions. Word has length 13 [2022-11-20 10:50:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:48,808 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 4628 transitions. [2022-11-20 10:50:48,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4628 transitions. [2022-11-20 10:50:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:50:48,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:48,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:48,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-20 10:50:49,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:49,010 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1791654020, now seen corresponding path program 1 times [2022-11-20 10:50:49,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:49,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69483112] [2022-11-20 10:50:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:49,011 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 [2022-11-20 10:50:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:49,012 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:49,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 10:50:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:49,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:49,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:49,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:49,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:49,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69483112] [2022-11-20 10:50:49,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69483112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:49,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:49,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438484001] [2022-11-20 10:50:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:49,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:49,195 INFO L87 Difference]: Start difference. First operand 1870 states and 4628 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 10:50:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:49,775 INFO L93 Difference]: Finished difference Result 2798 states and 6917 transitions. [2022-11-20 10:50:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:50:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2022-11-20 10:50:49,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:49,780 INFO L225 Difference]: With dead ends: 2798 [2022-11-20 10:50:49,780 INFO L226 Difference]: Without dead ends: 2798 [2022-11-20 10:50:49,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:49,781 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 173 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:49,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 42 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-20 10:50:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1980. [2022-11-20 10:50:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1977 states have (on average 2.4855842185128982) internal successors, (4914), 1979 states have internal predecessors, (4914), 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) [2022-11-20 10:50:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 4914 transitions. [2022-11-20 10:50:49,824 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 4914 transitions. Word has length 16 [2022-11-20 10:50:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 4914 transitions. [2022-11-20 10:50:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 10:50:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 4914 transitions. [2022-11-20 10:50:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:50:49,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:49,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:49,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:50,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:50,038 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash 687635400, now seen corresponding path program 1 times [2022-11-20 10:50:50,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:50,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301879228] [2022-11-20 10:50:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:50,039 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 [2022-11-20 10:50:50,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:50,041 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:50,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (36)] Waiting until timeout for monitored process [2022-11-20 10:50:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:50,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:50,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:50,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:50,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:50,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301879228] [2022-11-20 10:50:50,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301879228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:50,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:50,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332257420] [2022-11-20 10:50:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:50,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:50,232 INFO L87 Difference]: Start difference. First operand 1980 states and 4914 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:50:50,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:50,687 INFO L93 Difference]: Finished difference Result 2084 states and 5188 transitions. [2022-11-20 10:50:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-20 10:50:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:50,693 INFO L225 Difference]: With dead ends: 2084 [2022-11-20 10:50:50,693 INFO L226 Difference]: Without dead ends: 2084 [2022-11-20 10:50:50,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:50,694 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 21 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:50:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2022-11-20 10:50:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1940. [2022-11-20 10:50:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1937 states have (on average 2.48218895198761) internal successors, (4808), 1939 states have internal predecessors, (4808), 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) [2022-11-20 10:50:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 4808 transitions. [2022-11-20 10:50:50,745 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 4808 transitions. Word has length 16 [2022-11-20 10:50:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:50,746 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 4808 transitions. [2022-11-20 10:50:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:50:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 4808 transitions. [2022-11-20 10:50:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:50:50,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:50,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:50,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (36)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:50,959 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2136832846, now seen corresponding path program 1 times [2022-11-20 10:50:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814691737] [2022-11-20 10:50:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:50,960 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 [2022-11-20 10:50:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:50,961 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:50,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (37)] Waiting until timeout for monitored process [2022-11-20 10:50:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:51,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:51,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:51,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:51,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:51,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814691737] [2022-11-20 10:50:51,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814691737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:51,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:51,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441190823] [2022-11-20 10:50:51,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:51,181 INFO L87 Difference]: Start difference. First operand 1940 states and 4808 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:50:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:51,596 INFO L93 Difference]: Finished difference Result 2056 states and 5114 transitions. [2022-11-20 10:50:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-20 10:50:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:51,601 INFO L225 Difference]: With dead ends: 2056 [2022-11-20 10:50:51,601 INFO L226 Difference]: Without dead ends: 2056 [2022-11-20 10:50:51,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:51,601 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:51,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 20 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:50:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-11-20 10:50:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1898. [2022-11-20 10:50:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1895 states have (on average 2.478627968337731) internal successors, (4697), 1897 states have internal predecessors, (4697), 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) [2022-11-20 10:50:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 4697 transitions. [2022-11-20 10:50:51,638 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 4697 transitions. Word has length 16 [2022-11-20 10:50:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:51,638 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 4697 transitions. [2022-11-20 10:50:51,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-20 10:50:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 4697 transitions. [2022-11-20 10:50:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:50:51,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:51,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:51,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (37)] Ended with exit code 0 [2022-11-20 10:50:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:51,840 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:51,841 INFO L85 PathProgramCache]: Analyzing trace with hash -221603901, now seen corresponding path program 1 times [2022-11-20 10:50:51,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:51,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214322772] [2022-11-20 10:50:51,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:51,842 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 [2022-11-20 10:50:51,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:51,843 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:51,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 10:50:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:51,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:51,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:52,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:52,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214322772] [2022-11-20 10:50:52,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214322772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:52,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:52,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:52,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284860785] [2022-11-20 10:50:52,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:52,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:52,065 INFO L87 Difference]: Start difference. First operand 1898 states and 4697 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 10:50:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:52,614 INFO L93 Difference]: Finished difference Result 2674 states and 6589 transitions. [2022-11-20 10:50:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:52,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-11-20 10:50:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:52,619 INFO L225 Difference]: With dead ends: 2674 [2022-11-20 10:50:52,619 INFO L226 Difference]: Without dead ends: 2674 [2022-11-20 10:50:52,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:52,620 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 130 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:52,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 36 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-20 10:50:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1788. [2022-11-20 10:50:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1785 states have (on average 2.4649859943977592) internal successors, (4400), 1787 states have internal predecessors, (4400), 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) [2022-11-20 10:50:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 4400 transitions. [2022-11-20 10:50:52,664 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 4400 transitions. Word has length 19 [2022-11-20 10:50:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:52,664 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 4400 transitions. [2022-11-20 10:50:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 10:50:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 4400 transitions. [2022-11-20 10:50:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:50:52,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:52,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:52,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:52,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:52,879 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1227593545, now seen corresponding path program 1 times [2022-11-20 10:50:52,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:52,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774456741] [2022-11-20 10:50:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:52,880 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 [2022-11-20 10:50:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:52,881 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:52,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 10:50:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:53,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:53,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:53,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:53,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:53,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774456741] [2022-11-20 10:50:53,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774456741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:53,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:53,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934453863] [2022-11-20 10:50:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:53,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:53,095 INFO L87 Difference]: Start difference. First operand 1788 states and 4400 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 10:50:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:53,768 INFO L93 Difference]: Finished difference Result 2548 states and 6245 transitions. [2022-11-20 10:50:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-11-20 10:50:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:53,772 INFO L225 Difference]: With dead ends: 2548 [2022-11-20 10:50:53,773 INFO L226 Difference]: Without dead ends: 2548 [2022-11-20 10:50:53,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:53,773 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 120 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:53,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 42 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:50:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-11-20 10:50:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1668. [2022-11-20 10:50:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1665 states have (on average 2.448048048048048) internal successors, (4076), 1667 states have internal predecessors, (4076), 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) [2022-11-20 10:50:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 4076 transitions. [2022-11-20 10:50:53,812 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 4076 transitions. Word has length 19 [2022-11-20 10:50:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:53,813 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 4076 transitions. [2022-11-20 10:50:53,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-20 10:50:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 4076 transitions. [2022-11-20 10:50:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:50:53,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:53,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:53,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:54,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:54,028 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 797032099, now seen corresponding path program 1 times [2022-11-20 10:50:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:54,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814035427] [2022-11-20 10:50:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:54,029 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 [2022-11-20 10:50:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:54,030 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (40)] Waiting until timeout for monitored process [2022-11-20 10:50:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:54,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:50:54,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:54,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:54,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814035427] [2022-11-20 10:50:54,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814035427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:54,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:54,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149301716] [2022-11-20 10:50:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:54,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:54,226 INFO L87 Difference]: Start difference. First operand 1668 states and 4076 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-20 10:50:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:54,560 INFO L93 Difference]: Finished difference Result 2600 states and 6185 transitions. [2022-11-20 10:50:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:50:54,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2022-11-20 10:50:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:54,565 INFO L225 Difference]: With dead ends: 2600 [2022-11-20 10:50:54,565 INFO L226 Difference]: Without dead ends: 2600 [2022-11-20 10:50:54,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:50:54,566 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 109 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 84 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:50:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-20 10:50:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1666. [2022-11-20 10:50:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1663 states have (on average 2.442573662056524) internal successors, (4062), 1665 states have internal predecessors, (4062), 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) [2022-11-20 10:50:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4062 transitions. [2022-11-20 10:50:54,605 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4062 transitions. Word has length 22 [2022-11-20 10:50:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:54,605 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 4062 transitions. [2022-11-20 10:50:54,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-20 10:50:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4062 transitions. [2022-11-20 10:50:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:50:54,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:54,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:54,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 (40)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:54,820 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-20 10:50:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash 681739119, now seen corresponding path program 2 times [2022-11-20 10:50:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:54,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415497151] [2022-11-20 10:50:54,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:54,822 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 [2022-11-20 10:50:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:54,823 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 10:50:54,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 10:50:54,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:54,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 10:50:54,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:55,099 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 10:50:55,100 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:50:55,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-11-20 10:50:55,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2022-11-20 10:50:55,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-11-20 10:50:55,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-11-20 10:50:55,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-11-20 10:50:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-11-20 10:50:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-11-20 10:50:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-11-20 10:50:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-11-20 10:50:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-11-20 10:50:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-11-20 10:50:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-11-20 10:50:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-11-20 10:50:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-11-20 10:50:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-11-20 10:50:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-11-20 10:50:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-11-20 10:50:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-11-20 10:50:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2022-11-20 10:50:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2022-11-20 10:50:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2022-11-20 10:50:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2022-11-20 10:50:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 24 remaining) [2022-11-20 10:50:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-11-20 10:50:55,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 10:50:55,322 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:55,327 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:50:55,327 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:50:55,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:50:55 BasicIcfg [2022-11-20 10:50:55,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:50:55,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:50:55,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:50:55,372 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:50:55,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:00" (3/4) ... [2022-11-20 10:50:55,375 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:50:55,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:50:55,376 INFO L158 Benchmark]: Toolchain (without parser) took 56796.36ms. Allocated memory was 88.1MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 47.6MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-20 10:50:55,376 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:55,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.24ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 57.7MB in the end (delta: -10.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-11-20 10:50:55,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.24ms. Allocated memory is still 88.1MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:55,377 INFO L158 Benchmark]: Boogie Preprocessor took 30.77ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 53.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:55,377 INFO L158 Benchmark]: RCFGBuilder took 794.51ms. Allocated memory is still 88.1MB. Free memory was 53.6MB in the beginning and 63.2MB in the end (delta: -9.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-11-20 10:50:55,378 INFO L158 Benchmark]: TraceAbstraction took 55314.22ms. Allocated memory was 88.1MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 62.3MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-11-20 10:50:55,378 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 6.0GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:55,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.24ms. Allocated memory is still 88.1MB. Free memory was 47.3MB in the beginning and 57.7MB in the end (delta: -10.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.24ms. Allocated memory is still 88.1MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.77ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 53.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 794.51ms. Allocated memory is still 88.1MB. Free memory was 53.6MB in the beginning and 63.2MB in the end (delta: -9.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * TraceAbstraction took 55314.22ms. Allocated memory was 88.1MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 62.3MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 6.0GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.4s, 146 PlacesBefore, 73 PlacesAfterwards, 135 TransitionsBefore, 62 TransitionsAfterwards, 3246 CoEnabledTransitionPairs, 9 FixpointIterations, 53 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 130 TotalNumberOfCompositions, 17842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8736, independent: 8357, independent conditional: 0, independent unconditional: 8357, dependent: 379, dependent conditional: 0, dependent unconditional: 379, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2366, independent: 2310, independent conditional: 0, independent unconditional: 2310, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2366, independent: 2254, independent conditional: 0, independent unconditional: 2254, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 112, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 264, independent: 83, independent conditional: 0, independent unconditional: 83, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8736, independent: 6047, independent conditional: 0, independent unconditional: 6047, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 2366, unknown conditional: 0, unknown unconditional: 2366] , Statistics on independence cache: Total cache size (in pairs): 587, Positive cache size: 555, Positive conditional cache size: 0, Positive unconditional cache size: 555, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 738]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 738. Possible FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [pthread_create(&t1, 0, writer, 0)=1, r=0, t1={-2:0}, t2={-6:0}, t3={-10:0}, t4={3:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [pthread_create(&t2, 0, reader, 0)=2, r=0, t1={-2:0}, t2={-6:0}, t3={-10:0}, t4={3:0}, w=0, x=0, y=0] [L724] 2 int l; [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) [L740] 2 l = r-1 VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [pthread_create(&t3, 0, writer, 0)=3, r=1, t1={-2:0}, t2={-6:0}, t3={-10:0}, t4={3:0}, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [pthread_create(&t4, 0, reader, 0)=4, r=1, t1={-2:0}, t2={-6:0}, t3={-10:0}, t4={3:0}, w=0, x=0, y=0] [L724] 4 int l; [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L733] 4 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L743] 2 r = l [L745] 2 return 0; [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L716] 1 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; [L738] COND TRUE 4 !(ly == lx) [L738] 4 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 160 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 55.1s, OverallIterations: 40, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1598 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1598 mSDsluCounter, 1084 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 775 IncrementalHoareTripleChecker+Unchecked, 546 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3832 IncrementalHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 538 mSDtfsCounter, 3832 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 429 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7402occurred in iteration=0, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 39 MinimizatonAttempts, 9478 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 385 ConstructedInterpolants, 179 QuantifiedInterpolants, 5015 SizeOfPredicates, 124 NumberOfNonLiveVariables, 3813 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 10:50:55,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70800575-fe63-427b-a0bc-23fc53a34366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample