./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 e04fb08f 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 11:21:56,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:21:56,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:21:56,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:21:56,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:21:56,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:21:56,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:21:56,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:21:56,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:21:56,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:21:56,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:21:56,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:21:56,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:21:56,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:21:56,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:21:56,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:21:56,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:21:56,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:21:56,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:21:56,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:21:56,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:21:56,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:21:56,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:21:56,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:21:56,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:21:56,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:21:56,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:21:56,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:21:56,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:21:56,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:21:56,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:21:56,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:21:56,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:21:56,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:21:56,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:21:56,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:21:56,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:21:56,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:21:56,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:21:56,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:21:56,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:21:56,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:21:56,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:21:56,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:21:56,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:21:56,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:21:56,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:21:56,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:21:56,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:21:56,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:21:56,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:21:56,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:21:56,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:21:56,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:21:56,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:56,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:21:56,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:21:56,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:21:56,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:21:56,659 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-16 11:21:56,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:21:57,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:21:57,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:21:57,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:21:57,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:21:57,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-16 11:21:57,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/1a6a96e03/f9f398c20c744a438434d66ce99b3787/FLAG4cbb221e9 [2022-11-16 11:21:57,780 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:21:57,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-16 11:21:57,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/1a6a96e03/f9f398c20c744a438434d66ce99b3787/FLAG4cbb221e9 [2022-11-16 11:21:58,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/1a6a96e03/f9f398c20c744a438434d66ce99b3787 [2022-11-16 11:21:58,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:21:58,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:21:58,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:58,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:21:58,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:21:58,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773d0049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58, skipping insertion in model container [2022-11-16 11:21:58,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:21:58,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:58,382 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:21:58,514 WARN L229 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-16 11:21:58,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:58,533 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:21:58,549 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:21:58,579 WARN L229 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-16 11:21:58,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:58,641 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:21:58,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58 WrapperNode [2022-11-16 11:21:58,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:58,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:58,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:21:58,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:21:58,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,721 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2022-11-16 11:21:58,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:58,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:21:58,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:21:58,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:21:58,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:21:58,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:21:58,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:21:58,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:21:58,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:58,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:58,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:21:58,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:21:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:21:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:21:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:21:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:21:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-16 11:21:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-16 11:21:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:21:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:21:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:21:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:21:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:21:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:21:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-16 11:21:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-16 11:21:58,861 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:21:59,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:21:59,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:21:59,441 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:21:59,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:21:59,509 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:21:59,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:59 BoogieIcfgContainer [2022-11-16 11:21:59,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:21:59,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:21:59,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:21:59,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:21:59,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:21:58" (1/3) ... [2022-11-16 11:21:59,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e43b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:59, skipping insertion in model container [2022-11-16 11:21:59,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58" (2/3) ... [2022-11-16 11:21:59,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e43b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:59, skipping insertion in model container [2022-11-16 11:21:59,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:59" (3/3) ... [2022-11-16 11:21:59,524 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-16 11:21:59,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:21:59,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:21:59,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:21:59,646 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:21:59,693 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:21:59,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 134 transitions, 300 flow [2022-11-16 11:21:59,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 134 transitions, 300 flow [2022-11-16 11:21:59,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 300 flow [2022-11-16 11:21:59,820 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-11-16 11:21:59,821 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:21:59,827 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. [2022-11-16 11:21:59,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 3246 [2022-11-16 11:22:05,830 INFO L134 LiptonReduction]: Checked pairs total: 17780 [2022-11-16 11:22:05,831 INFO L136 LiptonReduction]: Total number of compositions: 123 [2022-11-16 11:22:05,839 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 62 transitions, 156 flow [2022-11-16 11:22:06,176 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) [2022-11-16 11:22:06,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:22:06,213 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;@53c3e091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:22:06,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-16 11:22:06,256 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) [2022-11-16 11:22:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:22:06,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:06,262 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:22:06,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash 472, now seen corresponding path program 1 times [2022-11-16 11:22:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:06,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720883565] [2022-11-16 11:22:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:06,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:06,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:06,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720883565] [2022-11-16 11:22:06,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720883565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:06,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:06,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:22:06,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898035551] [2022-11-16 11:22:06,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:22:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:22:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:06,466 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) [2022-11-16 11:22:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:06,763 INFO L93 Difference]: Finished difference Result 7400 states and 28264 transitions. [2022-11-16 11:22:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:22:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 11:22:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:06,868 INFO L225 Difference]: With dead ends: 7400 [2022-11-16 11:22:06,868 INFO L226 Difference]: Without dead ends: 7400 [2022-11-16 11:22:06,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:06,874 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 [2022-11-16 11:22:06,876 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] [2022-11-16 11:22:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-11-16 11:22:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7400. [2022-11-16 11:22:07,386 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) [2022-11-16 11:22:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7400 states to 7400 states and 28264 transitions. [2022-11-16 11:22:07,452 INFO L78 Accepts]: Start accepts. Automaton has 7400 states and 28264 transitions. Word has length 1 [2022-11-16 11:22:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:07,453 INFO L495 AbstractCegarLoop]: Abstraction has 7400 states and 28264 transitions. [2022-11-16 11:22:07,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7400 states and 28264 transitions. [2022-11-16 11:22:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:22:07,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:07,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:22:07,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:22:07,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 465921, now seen corresponding path program 1 times [2022-11-16 11:22:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226689616] [2022-11-16 11:22:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226689616] [2022-11-16 11:22:07,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226689616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:07,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:07,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393023263] [2022-11-16 11:22:07,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:07,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:07,958 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) [2022-11-16 11:22:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:08,183 INFO L93 Difference]: Finished difference Result 7072 states and 27114 transitions. [2022-11-16 11:22:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:22:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:08,271 INFO L225 Difference]: With dead ends: 7072 [2022-11-16 11:22:08,272 INFO L226 Difference]: Without dead ends: 7072 [2022-11-16 11:22:08,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:08,279 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:08,279 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] [2022-11-16 11:22:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-11-16 11:22:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7072. [2022-11-16 11:22:08,733 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) [2022-11-16 11:22:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 27114 transitions. [2022-11-16 11:22:08,837 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 27114 transitions. Word has length 3 [2022-11-16 11:22:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:08,837 INFO L495 AbstractCegarLoop]: Abstraction has 7072 states and 27114 transitions. [2022-11-16 11:22:08,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 27114 transitions. [2022-11-16 11:22:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:22:08,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:08,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:22:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:22:08,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 465922, now seen corresponding path program 1 times [2022-11-16 11:22:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:08,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219847298] [2022-11-16 11:22:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:08,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:09,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219847298] [2022-11-16 11:22:09,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219847298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:09,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:09,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654202166] [2022-11-16 11:22:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:09,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:09,250 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) [2022-11-16 11:22:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:09,464 INFO L93 Difference]: Finished difference Result 6744 states and 25964 transitions. [2022-11-16 11:22:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:22:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:09,524 INFO L225 Difference]: With dead ends: 6744 [2022-11-16 11:22:09,524 INFO L226 Difference]: Without dead ends: 6744 [2022-11-16 11:22:09,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:09,529 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-16 11:22:09,531 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] [2022-11-16 11:22:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2022-11-16 11:22:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 6744. [2022-11-16 11:22:09,879 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) [2022-11-16 11:22:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 25964 transitions. [2022-11-16 11:22:09,920 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 25964 transitions. Word has length 3 [2022-11-16 11:22:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:09,920 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 25964 transitions. [2022-11-16 11:22:09,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 25964 transitions. [2022-11-16 11:22:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:22:09,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:09,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:22:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:22:09,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 447759405, now seen corresponding path program 1 times [2022-11-16 11:22:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:09,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571324470] [2022-11-16 11:22:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:09,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571324470] [2022-11-16 11:22:09,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571324470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:09,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:10,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564344578] [2022-11-16 11:22:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:10,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:10,002 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) [2022-11-16 11:22:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:10,202 INFO L93 Difference]: Finished difference Result 6672 states and 25774 transitions. [2022-11-16 11:22:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:10,203 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 [2022-11-16 11:22:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:10,251 INFO L225 Difference]: With dead ends: 6672 [2022-11-16 11:22:10,251 INFO L226 Difference]: Without dead ends: 6672 [2022-11-16 11:22:10,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:10,252 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 [2022-11-16 11:22:10,253 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] [2022-11-16 11:22:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2022-11-16 11:22:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6672. [2022-11-16 11:22:10,540 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) [2022-11-16 11:22:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 25774 transitions. [2022-11-16 11:22:10,592 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 25774 transitions. Word has length 5 [2022-11-16 11:22:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:10,594 INFO L495 AbstractCegarLoop]: Abstraction has 6672 states and 25774 transitions. [2022-11-16 11:22:10,595 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) [2022-11-16 11:22:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 25774 transitions. [2022-11-16 11:22:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:22:10,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:10,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:22:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:22:10,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 447759406, now seen corresponding path program 1 times [2022-11-16 11:22:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:10,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969571669] [2022-11-16 11:22:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969571669] [2022-11-16 11:22:10,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969571669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:10,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:10,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153997604] [2022-11-16 11:22:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:10,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:10,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:10,764 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) [2022-11-16 11:22:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:10,915 INFO L93 Difference]: Finished difference Result 6600 states and 25584 transitions. [2022-11-16 11:22:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:10,916 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 [2022-11-16 11:22:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:10,967 INFO L225 Difference]: With dead ends: 6600 [2022-11-16 11:22:10,967 INFO L226 Difference]: Without dead ends: 6600 [2022-11-16 11:22:10,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:10,968 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 [2022-11-16 11:22:10,969 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] [2022-11-16 11:22:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2022-11-16 11:22:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 6600. [2022-11-16 11:22:11,308 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) [2022-11-16 11:22:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 25584 transitions. [2022-11-16 11:22:11,340 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 25584 transitions. Word has length 5 [2022-11-16 11:22:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:11,340 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 25584 transitions. [2022-11-16 11:22:11,340 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) [2022-11-16 11:22:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 25584 transitions. [2022-11-16 11:22:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:22:11,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:11,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:11,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:22:11,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 800070988, now seen corresponding path program 1 times [2022-11-16 11:22:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675369636] [2022-11-16 11:22:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675369636] [2022-11-16 11:22:11,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675369636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:11,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:11,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48406361] [2022-11-16 11:22:11,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:11,403 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) [2022-11-16 11:22:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:11,519 INFO L93 Difference]: Finished difference Result 6447 states and 25079 transitions. [2022-11-16 11:22:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:11,519 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 [2022-11-16 11:22:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:11,552 INFO L225 Difference]: With dead ends: 6447 [2022-11-16 11:22:11,552 INFO L226 Difference]: Without dead ends: 6447 [2022-11-16 11:22:11,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:11,553 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:11,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:22:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6447 states. [2022-11-16 11:22:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6447 to 6447. [2022-11-16 11:22:11,922 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) [2022-11-16 11:22:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 25079 transitions. [2022-11-16 11:22:11,956 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 25079 transitions. Word has length 7 [2022-11-16 11:22:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:11,956 INFO L495 AbstractCegarLoop]: Abstraction has 6447 states and 25079 transitions. [2022-11-16 11:22:11,956 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) [2022-11-16 11:22:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 25079 transitions. [2022-11-16 11:22:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:22:11,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:11,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:22:11,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 800070989, now seen corresponding path program 1 times [2022-11-16 11:22:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:11,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846826423] [2022-11-16 11:22:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:12,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846826423] [2022-11-16 11:22:12,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846826423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:12,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:12,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467083393] [2022-11-16 11:22:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:12,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:12,125 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) [2022-11-16 11:22:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:12,239 INFO L93 Difference]: Finished difference Result 6294 states and 24574 transitions. [2022-11-16 11:22:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:12,239 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 [2022-11-16 11:22:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:12,272 INFO L225 Difference]: With dead ends: 6294 [2022-11-16 11:22:12,273 INFO L226 Difference]: Without dead ends: 6294 [2022-11-16 11:22:12,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:12,274 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:12,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:22:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6294 states. [2022-11-16 11:22:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 6294. [2022-11-16 11:22:12,457 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) [2022-11-16 11:22:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 24574 transitions. [2022-11-16 11:22:12,487 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 24574 transitions. Word has length 7 [2022-11-16 11:22:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 6294 states and 24574 transitions. [2022-11-16 11:22:12,488 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) [2022-11-16 11:22:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 24574 transitions. [2022-11-16 11:22:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:12,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:12,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:22:12,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 27868156, now seen corresponding path program 1 times [2022-11-16 11:22:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:12,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042244225] [2022-11-16 11:22:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:12,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:12,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042244225] [2022-11-16 11:22:12,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042244225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:12,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:12,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:12,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082586156] [2022-11-16 11:22:12,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:12,552 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) [2022-11-16 11:22:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:13,153 INFO L93 Difference]: Finished difference Result 13132 states and 50384 transitions. [2022-11-16 11:22:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:22:13,154 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 [2022-11-16 11:22:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:13,234 INFO L225 Difference]: With dead ends: 13132 [2022-11-16 11:22:13,234 INFO L226 Difference]: Without dead ends: 13132 [2022-11-16 11:22:13,235 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 [2022-11-16 11:22:13,235 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 163 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:13,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 22 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:22:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2022-11-16 11:22:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 8022. [2022-11-16 11:22:13,740 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) [2022-11-16 11:22:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 31386 transitions. [2022-11-16 11:22:13,776 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 31386 transitions. Word has length 9 [2022-11-16 11:22:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 31386 transitions. [2022-11-16 11:22:13,776 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) [2022-11-16 11:22:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 31386 transitions. [2022-11-16 11:22:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:13,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:13,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:13,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:22:13,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash 69085715, now seen corresponding path program 1 times [2022-11-16 11:22:13,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:13,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499694619] [2022-11-16 11:22:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:13,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:13,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499694619] [2022-11-16 11:22:13,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499694619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:13,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:13,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:13,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671783343] [2022-11-16 11:22:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:13,960 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) [2022-11-16 11:22:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:14,051 INFO L93 Difference]: Finished difference Result 6366 states and 24302 transitions. [2022-11-16 11:22:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:14,052 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 [2022-11-16 11:22:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:14,084 INFO L225 Difference]: With dead ends: 6366 [2022-11-16 11:22:14,084 INFO L226 Difference]: Without dead ends: 6366 [2022-11-16 11:22:14,084 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 [2022-11-16 11:22:14,085 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 [2022-11-16 11:22:14,086 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] [2022-11-16 11:22:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2022-11-16 11:22:14,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 6366. [2022-11-16 11:22:14,461 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) [2022-11-16 11:22:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 24302 transitions. [2022-11-16 11:22:14,489 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 24302 transitions. Word has length 9 [2022-11-16 11:22:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:14,490 INFO L495 AbstractCegarLoop]: Abstraction has 6366 states and 24302 transitions. [2022-11-16 11:22:14,490 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) [2022-11-16 11:22:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 24302 transitions. [2022-11-16 11:22:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:14,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:14,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:14,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:22:14,492 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash 69085716, now seen corresponding path program 1 times [2022-11-16 11:22:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:14,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370376845] [2022-11-16 11:22:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:14,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370376845] [2022-11-16 11:22:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370376845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:14,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:14,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673547927] [2022-11-16 11:22:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:14,540 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) [2022-11-16 11:22:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:14,612 INFO L93 Difference]: Finished difference Result 4710 states and 17218 transitions. [2022-11-16 11:22:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:14,612 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 [2022-11-16 11:22:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:14,629 INFO L225 Difference]: With dead ends: 4710 [2022-11-16 11:22:14,629 INFO L226 Difference]: Without dead ends: 4710 [2022-11-16 11:22:14,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:14,630 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 [2022-11-16 11:22:14,630 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] [2022-11-16 11:22:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-11-16 11:22:14,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4710. [2022-11-16 11:22:14,843 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) [2022-11-16 11:22:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 17218 transitions. [2022-11-16 11:22:14,858 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 17218 transitions. Word has length 9 [2022-11-16 11:22:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:14,858 INFO L495 AbstractCegarLoop]: Abstraction has 4710 states and 17218 transitions. [2022-11-16 11:22:14,859 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) [2022-11-16 11:22:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 17218 transitions. [2022-11-16 11:22:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:22:14,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:14,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:14,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:22:14,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1513109792, now seen corresponding path program 1 times [2022-11-16 11:22:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:14,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858091919] [2022-11-16 11:22:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:14,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858091919] [2022-11-16 11:22:14,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858091919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:14,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:14,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129830459] [2022-11-16 11:22:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:14,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:14,917 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) [2022-11-16 11:22:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:15,025 INFO L93 Difference]: Finished difference Result 3794 states and 12014 transitions. [2022-11-16 11:22:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:15,026 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 [2022-11-16 11:22:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:15,036 INFO L225 Difference]: With dead ends: 3794 [2022-11-16 11:22:15,037 INFO L226 Difference]: Without dead ends: 3794 [2022-11-16 11:22:15,037 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 [2022-11-16 11:22:15,038 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 [2022-11-16 11:22:15,038 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] [2022-11-16 11:22:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2022-11-16 11:22:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3794. [2022-11-16 11:22:15,118 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) [2022-11-16 11:22:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 12014 transitions. [2022-11-16 11:22:15,130 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 12014 transitions. Word has length 11 [2022-11-16 11:22:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:15,131 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 12014 transitions. [2022-11-16 11:22:15,131 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) [2022-11-16 11:22:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 12014 transitions. [2022-11-16 11:22:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:22:15,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:15,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:15,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:22:15,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1011467724, now seen corresponding path program 2 times [2022-11-16 11:22:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766056] [2022-11-16 11:22:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:15,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766056] [2022-11-16 11:22:15,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:15,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:15,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605091585] [2022-11-16 11:22:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:15,224 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) [2022-11-16 11:22:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:15,352 INFO L93 Difference]: Finished difference Result 2194 states and 5289 transitions. [2022-11-16 11:22:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:22:15,353 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 [2022-11-16 11:22:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:15,356 INFO L225 Difference]: With dead ends: 2194 [2022-11-16 11:22:15,356 INFO L226 Difference]: Without dead ends: 2194 [2022-11-16 11:22:15,357 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 [2022-11-16 11:22:15,357 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 [2022-11-16 11:22:15,358 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] [2022-11-16 11:22:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2022-11-16 11:22:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1856. [2022-11-16 11:22:15,465 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) [2022-11-16 11:22:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 4589 transitions. [2022-11-16 11:22:15,471 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 4589 transitions. Word has length 11 [2022-11-16 11:22:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:15,472 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 4589 transitions. [2022-11-16 11:22:15,472 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) [2022-11-16 11:22:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 4589 transitions. [2022-11-16 11:22:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:22:15,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:15,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:15,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:22:15,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 390447058, now seen corresponding path program 1 times [2022-11-16 11:22:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528613039] [2022-11-16 11:22:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:15,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528613039] [2022-11-16 11:22:15,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528613039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:15,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:15,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277048531] [2022-11-16 11:22:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:15,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:15,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:15,549 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) [2022-11-16 11:22:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:15,866 INFO L93 Difference]: Finished difference Result 2774 states and 6858 transitions. [2022-11-16 11:22:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:22:15,867 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 [2022-11-16 11:22:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:15,873 INFO L225 Difference]: With dead ends: 2774 [2022-11-16 11:22:15,874 INFO L226 Difference]: Without dead ends: 2774 [2022-11-16 11:22:15,874 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 [2022-11-16 11:22:15,875 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 [2022-11-16 11:22:15,875 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] [2022-11-16 11:22:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-11-16 11:22:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1980. [2022-11-16 11:22:15,929 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) [2022-11-16 11:22:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 4914 transitions. [2022-11-16 11:22:15,936 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 4914 transitions. Word has length 13 [2022-11-16 11:22:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:15,937 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 4914 transitions. [2022-11-16 11:22:15,937 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) [2022-11-16 11:22:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 4914 transitions. [2022-11-16 11:22:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:22:15,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:15,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:15,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:22:15,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1335842129, now seen corresponding path program 1 times [2022-11-16 11:22:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:15,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463987123] [2022-11-16 11:22:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:16,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:16,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463987123] [2022-11-16 11:22:16,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463987123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:16,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:16,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:16,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864390429] [2022-11-16 11:22:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:16,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:16,014 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) [2022-11-16 11:22:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:16,296 INFO L93 Difference]: Finished difference Result 2720 states and 6714 transitions. [2022-11-16 11:22:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:22:16,296 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 [2022-11-16 11:22:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:16,303 INFO L225 Difference]: With dead ends: 2720 [2022-11-16 11:22:16,303 INFO L226 Difference]: Without dead ends: 2720 [2022-11-16 11:22:16,304 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 [2022-11-16 11:22:16,304 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 [2022-11-16 11:22:16,305 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] [2022-11-16 11:22:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2022-11-16 11:22:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1830. [2022-11-16 11:22:16,362 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) [2022-11-16 11:22:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 4511 transitions. [2022-11-16 11:22:16,369 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 4511 transitions. Word has length 16 [2022-11-16 11:22:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:16,369 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 4511 transitions. [2022-11-16 11:22:16,370 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) [2022-11-16 11:22:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 4511 transitions. [2022-11-16 11:22:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:22:16,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:16,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:22:16,372 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1074426267, now seen corresponding path program 1 times [2022-11-16 11:22:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:16,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199759328] [2022-11-16 11:22:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:16,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:16,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:16,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199759328] [2022-11-16 11:22:16,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199759328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:16,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:16,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:16,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609966019] [2022-11-16 11:22:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:16,502 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) [2022-11-16 11:22:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:16,784 INFO L93 Difference]: Finished difference Result 2572 states and 6316 transitions. [2022-11-16 11:22:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:22:16,785 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 [2022-11-16 11:22:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:16,790 INFO L225 Difference]: With dead ends: 2572 [2022-11-16 11:22:16,790 INFO L226 Difference]: Without dead ends: 2572 [2022-11-16 11:22:16,791 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 [2022-11-16 11:22:16,792 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 [2022-11-16 11:22:16,792 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] [2022-11-16 11:22:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-11-16 11:22:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1668. [2022-11-16 11:22:16,838 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) [2022-11-16 11:22:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 4076 transitions. [2022-11-16 11:22:16,843 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 4076 transitions. Word has length 16 [2022-11-16 11:22:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:16,844 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 4076 transitions. [2022-11-16 11:22:16,844 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) [2022-11-16 11:22:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 4076 transitions. [2022-11-16 11:22:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:22:16,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:16,848 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] [2022-11-16 11:22:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:22:16,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash 306719443, now seen corresponding path program 1 times [2022-11-16 11:22:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:16,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030979399] [2022-11-16 11:22:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030979399] [2022-11-16 11:22:16,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030979399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:16,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:16,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:22:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448960536] [2022-11-16 11:22:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:16,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:17,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:17,000 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) [2022-11-16 11:22:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:17,253 INFO L93 Difference]: Finished difference Result 2184 states and 5061 transitions. [2022-11-16 11:22:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:22:17,254 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 [2022-11-16 11:22:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:17,259 INFO L225 Difference]: With dead ends: 2184 [2022-11-16 11:22:17,259 INFO L226 Difference]: Without dead ends: 2184 [2022-11-16 11:22:17,259 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 [2022-11-16 11:22:17,260 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 [2022-11-16 11:22:17,260 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] [2022-11-16 11:22:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-11-16 11:22:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1666. [2022-11-16 11:22:17,306 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) [2022-11-16 11:22:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4062 transitions. [2022-11-16 11:22:17,312 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4062 transitions. Word has length 22 [2022-11-16 11:22:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:17,313 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 4062 transitions. [2022-11-16 11:22:17,313 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) [2022-11-16 11:22:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4062 transitions. [2022-11-16 11:22:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:22:17,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:17,317 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] [2022-11-16 11:22:17,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:22:17,318 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2037078569, now seen corresponding path program 2 times [2022-11-16 11:22:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:17,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734580332] [2022-11-16 11:22:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:22:17,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:22:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:22:17,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:22:17,415 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:22:17,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-11-16 11:22:17,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2022-11-16 11:22:17,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-11-16 11:22:17,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-11-16 11:22:17,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-11-16 11:22:17,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-11-16 11:22:17,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-11-16 11:22:17,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-11-16 11:22:17,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-11-16 11:22:17,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-11-16 11:22:17,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-11-16 11:22:17,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-11-16 11:22:17,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-11-16 11:22:17,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-11-16 11:22:17,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-11-16 11:22:17,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-11-16 11:22:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-11-16 11:22:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-11-16 11:22:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2022-11-16 11:22:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2022-11-16 11:22:17,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2022-11-16 11:22:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2022-11-16 11:22:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 24 remaining) [2022-11-16 11:22:17,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-11-16 11:22:17,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:22:17,429 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:17,436 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:22:17,436 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:22:17,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:22:17 BasicIcfg [2022-11-16 11:22:17,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:22:17,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:22:17,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:22:17,516 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:22:17,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:59" (3/4) ... [2022-11-16 11:22:17,520 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:22:17,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:22:17,521 INFO L158 Benchmark]: Toolchain (without parser) took 19449.75ms. Allocated memory was 119.5MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 81.9MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 383.3MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,522 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:22:17,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.11ms. Allocated memory is still 119.5MB. Free memory was 81.6MB in the beginning and 83.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.10ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,523 INFO L158 Benchmark]: Boogie Preprocessor took 42.55ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 80.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,523 INFO L158 Benchmark]: RCFGBuilder took 746.88ms. Allocated memory is still 119.5MB. Free memory was 80.4MB in the beginning and 61.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,524 INFO L158 Benchmark]: TraceAbstraction took 18000.81ms. Allocated memory was 119.5MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 60.8MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 624.9MB. Max. memory is 16.1GB. [2022-11-16 11:22:17,524 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 5.5GB. Free memory was 5.1GB in the beginning and 5.1GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:22:17,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.11ms. Allocated memory is still 119.5MB. Free memory was 81.6MB in the beginning and 83.9MB in the end (delta: -2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.10ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.55ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 80.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 746.88ms. Allocated memory is still 119.5MB. Free memory was 80.4MB in the beginning and 61.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18000.81ms. Allocated memory was 119.5MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 60.8MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 624.9MB. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 5.5GB. Free memory was 5.1GB in the beginning and 5.1GB 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: 6.1s, 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: 195, independent: 71, independent conditional: 0, independent unconditional: 71, dependent: 123, dependent conditional: 0, dependent unconditional: 123, 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: 17.7s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1063 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1063 mSDsluCounter, 320 SdHoareTripleChecker+Invalid, 1.7s 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: 4.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 8554 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s 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 [2022-11-16 11:22:17,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 11:22:20,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:22:20,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:22:20,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:22:20,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:22:20,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:22:20,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:22:20,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:22:20,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:22:20,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:22:20,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:22:20,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:22:20,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:22:20,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:22:20,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:22:20,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:22:20,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:22:20,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:22:20,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:22:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:22:20,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:22:20,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:22:20,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:22:20,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:22:20,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:22:20,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:22:20,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:22:20,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:22:20,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:22:20,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:22:20,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:22:20,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:22:20,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:22:20,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:22:20,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:22:20,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:22:20,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:22:20,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:22:20,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:22:20,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:22:20,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:22:20,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:22:20,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:22:20,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:22:20,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:22:20,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:22:20,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:22:20,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:22:20,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:22:20,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:22:20,233 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:22:20,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:22:20,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:22:20,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:22:20,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:22:20,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:22:20,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:22:20,235 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:22:20,235 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:22:20,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:22:20,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:22:20,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:22:20,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:22:20,237 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:22:20,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:22:20,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:22:20,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:22:20,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:22:20,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:22:20,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:20,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:22:20,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:22:20,239 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:22:20,239 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:22:20,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:22:20,240 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-16 11:22:20,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:22:20,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:22:20,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:22:20,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:22:20,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:22:20,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-16 11:22:20,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/9507bba8b/3e82e0f0109c4b47b36a9773d8c46b8a/FLAG9f4400628 [2022-11-16 11:22:21,485 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:22:21,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-16 11:22:21,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/9507bba8b/3e82e0f0109c4b47b36a9773d8c46b8a/FLAG9f4400628 [2022-11-16 11:22:21,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/data/9507bba8b/3e82e0f0109c4b47b36a9773d8c46b8a [2022-11-16 11:22:21,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:22:21,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:22:21,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:21,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:22:21,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:22:21,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:21" (1/1) ... [2022-11-16 11:22:21,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdb720a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:21, skipping insertion in model container [2022-11-16 11:22:21,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:22:21" (1/1) ... [2022-11-16 11:22:21,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:22:21,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:22:22,065 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:22:22,211 WARN L229 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-16 11:22:22,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:22,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:22:22,250 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:22:22,272 WARN L229 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_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-16 11:22:22,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:22,319 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:22:22,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22 WrapperNode [2022-11-16 11:22:22,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:22,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:22,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:22:22,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:22:22,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,398 INFO L138 Inliner]: procedures = 177, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 120 [2022-11-16 11:22:22,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:22,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:22:22,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:22:22,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:22:22,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:22:22,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:22:22,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:22:22,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:22:22,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (1/1) ... [2022-11-16 11:22:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:22,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:22:22,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:22:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:22:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:22:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:22:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-16 11:22:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-16 11:22:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:22:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:22:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:22:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:22:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:22:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:22:22,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:22:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-16 11:22:22,558 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-16 11:22:22,560 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:22:22,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:22:22,789 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:22:23,160 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:22:23,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:22:23,275 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:22:23,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:23 BoogieIcfgContainer [2022-11-16 11:22:23,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:22:23,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:22:23,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:22:23,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:22:23,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:22:21" (1/3) ... [2022-11-16 11:22:23,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52299f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:23, skipping insertion in model container [2022-11-16 11:22:23,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:22" (2/3) ... [2022-11-16 11:22:23,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52299f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:23, skipping insertion in model container [2022-11-16 11:22:23,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:23" (3/3) ... [2022-11-16 11:22:23,288 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-16 11:22:23,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:22:23,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:22:23,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:22:23,496 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:22:23,557 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:22:23,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 135 transitions, 302 flow [2022-11-16 11:22:23,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 135 transitions, 302 flow [2022-11-16 11:22:23,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2022-11-16 11:22:23,651 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-11-16 11:22:23,652 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:22:23,659 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. [2022-11-16 11:22:23,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 3246 [2022-11-16 11:22:38,013 INFO L134 LiptonReduction]: Checked pairs total: 17842 [2022-11-16 11:22:38,014 INFO L136 LiptonReduction]: Total number of compositions: 130 [2022-11-16 11:22:38,025 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 62 transitions, 156 flow [2022-11-16 11:22:38,526 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) [2022-11-16 11:22:38,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:22:38,557 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;@7ae0a171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:22:38,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-16 11:22:38,628 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) [2022-11-16 11:22:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:22:38,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:38,641 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:22:38,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash 481, now seen corresponding path program 1 times [2022-11-16 11:22:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:38,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141474416] [2022-11-16 11:22:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:38,667 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 [2022-11-16 11:22:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:38,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:38,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:38,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:22:38,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:38,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:38,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141474416] [2022-11-16 11:22:38,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141474416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:38,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:38,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:22:38,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646383600] [2022-11-16 11:22:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:38,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:22:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:38,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:22:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:38,813 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) [2022-11-16 11:22:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:39,348 INFO L93 Difference]: Finished difference Result 7400 states and 28264 transitions. [2022-11-16 11:22:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:22:39,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 11:22:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:39,459 INFO L225 Difference]: With dead ends: 7400 [2022-11-16 11:22:39,459 INFO L226 Difference]: Without dead ends: 7400 [2022-11-16 11:22:39,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:39,464 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 [2022-11-16 11:22:39,465 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] [2022-11-16 11:22:39,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-11-16 11:22:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7400. [2022-11-16 11:22:39,902 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) [2022-11-16 11:22:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7400 states to 7400 states and 28264 transitions. [2022-11-16 11:22:40,091 INFO L78 Accepts]: Start accepts. Automaton has 7400 states and 28264 transitions. Word has length 1 [2022-11-16 11:22:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:40,092 INFO L495 AbstractCegarLoop]: Abstraction has 7400 states and 28264 transitions. [2022-11-16 11:22:40,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7400 states and 28264 transitions. [2022-11-16 11:22:40,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:22:40,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:40,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:22:40,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:40,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 474635, now seen corresponding path program 1 times [2022-11-16 11:22:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489481958] [2022-11-16 11:22:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:40,310 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 [2022-11-16 11:22:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:40,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:40,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:40,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:22:40,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:40,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,740 INFO L321 Elim1Store]: treesize reduction 47, result has 36.5 percent of original size [2022-11-16 11:22:40,742 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 [2022-11-16 11:22:40,766 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 [2022-11-16 11:22:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:40,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:40,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:40,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489481958] [2022-11-16 11:22:40,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489481958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:40,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:40,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806742573] [2022-11-16 11:22:40,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:40,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:40,839 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) [2022-11-16 11:22:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:41,219 INFO L93 Difference]: Finished difference Result 7072 states and 27114 transitions. [2022-11-16 11:22:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:22:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:41,396 INFO L225 Difference]: With dead ends: 7072 [2022-11-16 11:22:41,396 INFO L226 Difference]: Without dead ends: 7072 [2022-11-16 11:22:41,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:41,398 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-16 11:22:41,399 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] [2022-11-16 11:22:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-11-16 11:22:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7072. [2022-11-16 11:22:41,875 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) [2022-11-16 11:22:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 27114 transitions. [2022-11-16 11:22:41,979 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 27114 transitions. Word has length 3 [2022-11-16 11:22:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:41,980 INFO L495 AbstractCegarLoop]: Abstraction has 7072 states and 27114 transitions. [2022-11-16 11:22:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 27114 transitions. [2022-11-16 11:22:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:22:41,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:41,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:22:42,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:42,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:42,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash 474637, now seen corresponding path program 1 times [2022-11-16 11:22:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:42,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695087477] [2022-11-16 11:22:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:42,198 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 [2022-11-16 11:22:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:42,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:42,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:42,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:42,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:42,370 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:22:42,371 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 [2022-11-16 11:22:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:42,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:42,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:42,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695087477] [2022-11-16 11:22:42,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695087477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:42,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:42,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:42,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141536671] [2022-11-16 11:22:42,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:42,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:42,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:42,469 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) [2022-11-16 11:22:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:42,797 INFO L93 Difference]: Finished difference Result 7071 states and 27112 transitions. [2022-11-16 11:22:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:42,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:22:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:42,899 INFO L225 Difference]: With dead ends: 7071 [2022-11-16 11:22:42,899 INFO L226 Difference]: Without dead ends: 7071 [2022-11-16 11:22:42,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:42,901 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:42,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-16 11:22:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2022-11-16 11:22:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7071. [2022-11-16 11:22:43,324 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) [2022-11-16 11:22:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 27112 transitions. [2022-11-16 11:22:43,379 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 27112 transitions. Word has length 3 [2022-11-16 11:22:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:43,379 INFO L495 AbstractCegarLoop]: Abstraction has 7071 states and 27112 transitions. [2022-11-16 11:22:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 27112 transitions. [2022-11-16 11:22:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 11:22:43,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:43,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 11:22:43,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:43,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:43,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash 14712100, now seen corresponding path program 1 times [2022-11-16 11:22:43,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:43,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125662514] [2022-11-16 11:22:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:43,600 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 [2022-11-16 11:22:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:43,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:43,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:43,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:43,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:43,977 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:22:43,978 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 [2022-11-16 11:22:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:44,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:44,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:44,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125662514] [2022-11-16 11:22:44,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125662514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:44,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:44,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880268947] [2022-11-16 11:22:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:44,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:44,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:44,142 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) [2022-11-16 11:22:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:44,366 INFO L93 Difference]: Finished difference Result 7069 states and 27108 transitions. [2022-11-16 11:22:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 11:22:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:44,411 INFO L225 Difference]: With dead ends: 7069 [2022-11-16 11:22:44,412 INFO L226 Difference]: Without dead ends: 7069 [2022-11-16 11:22:44,412 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 [2022-11-16 11:22:44,419 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 [2022-11-16 11:22:44,423 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] [2022-11-16 11:22:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7069 states. [2022-11-16 11:22:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7069 to 7069. [2022-11-16 11:22:44,759 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) [2022-11-16 11:22:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 27108 transitions. [2022-11-16 11:22:44,793 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 27108 transitions. Word has length 4 [2022-11-16 11:22:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:44,794 INFO L495 AbstractCegarLoop]: Abstraction has 7069 states and 27108 transitions. [2022-11-16 11:22:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 27108 transitions. [2022-11-16 11:22:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:22:44,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:44,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:22:44,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:45,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 456135548, now seen corresponding path program 1 times [2022-11-16 11:22:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:45,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598920160] [2022-11-16 11:22:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:45,010 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 [2022-11-16 11:22:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:45,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:45,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:45,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:22:45,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:45,184 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:22:45,185 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 [2022-11-16 11:22:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:45,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:45,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598920160] [2022-11-16 11:22:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598920160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:45,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:45,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272922872] [2022-11-16 11:22:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:45,230 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) [2022-11-16 11:22:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:45,444 INFO L93 Difference]: Finished difference Result 6997 states and 26918 transitions. [2022-11-16 11:22:45,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:45,445 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 [2022-11-16 11:22:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:45,489 INFO L225 Difference]: With dead ends: 6997 [2022-11-16 11:22:45,489 INFO L226 Difference]: Without dead ends: 6997 [2022-11-16 11:22:45,490 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 [2022-11-16 11:22:45,493 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 [2022-11-16 11:22:45,493 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] [2022-11-16 11:22:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-11-16 11:22:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6997. [2022-11-16 11:22:45,851 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) [2022-11-16 11:22:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6997 states to 6997 states and 26918 transitions. [2022-11-16 11:22:45,896 INFO L78 Accepts]: Start accepts. Automaton has 6997 states and 26918 transitions. Word has length 5 [2022-11-16 11:22:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:45,897 INFO L495 AbstractCegarLoop]: Abstraction has 6997 states and 26918 transitions. [2022-11-16 11:22:45,898 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) [2022-11-16 11:22:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6997 states and 26918 transitions. [2022-11-16 11:22:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:22:45,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:45,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:22:45,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:46,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash 456135549, now seen corresponding path program 1 times [2022-11-16 11:22:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:46,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290300747] [2022-11-16 11:22:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:46,112 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 [2022-11-16 11:22:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:46,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:46,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:46,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:46,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:46,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:46,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:46,352 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 11:22:46,352 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 [2022-11-16 11:22:46,367 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 [2022-11-16 11:22:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:46,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:46,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:46,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290300747] [2022-11-16 11:22:46,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290300747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:46,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:46,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965049541] [2022-11-16 11:22:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:46,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:46,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:46,422 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) [2022-11-16 11:22:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:46,641 INFO L93 Difference]: Finished difference Result 6925 states and 26728 transitions. [2022-11-16 11:22:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:46,642 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 [2022-11-16 11:22:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:46,695 INFO L225 Difference]: With dead ends: 6925 [2022-11-16 11:22:46,696 INFO L226 Difference]: Without dead ends: 6925 [2022-11-16 11:22:46,696 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 [2022-11-16 11:22:46,697 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 [2022-11-16 11:22:46,698 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] [2022-11-16 11:22:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6925 states. [2022-11-16 11:22:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6925 to 6925. [2022-11-16 11:22:47,117 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) [2022-11-16 11:22:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 26728 transitions. [2022-11-16 11:22:47,141 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 26728 transitions. Word has length 5 [2022-11-16 11:22:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:47,141 INFO L495 AbstractCegarLoop]: Abstraction has 6925 states and 26728 transitions. [2022-11-16 11:22:47,142 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) [2022-11-16 11:22:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 26728 transitions. [2022-11-16 11:22:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:22:47,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:47,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:22:47,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:47,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1253328434, now seen corresponding path program 1 times [2022-11-16 11:22:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:47,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654181361] [2022-11-16 11:22:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:47,357 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 [2022-11-16 11:22:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:47,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:47,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:47,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:47,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:47,532 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:22:47,532 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 [2022-11-16 11:22:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:47,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:47,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654181361] [2022-11-16 11:22:47,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654181361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:47,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:47,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265116894] [2022-11-16 11:22:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:47,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:47,708 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) [2022-11-16 11:22:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:47,876 INFO L93 Difference]: Finished difference Result 6924 states and 26727 transitions. [2022-11-16 11:22:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:47,876 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 [2022-11-16 11:22:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:47,923 INFO L225 Difference]: With dead ends: 6924 [2022-11-16 11:22:47,924 INFO L226 Difference]: Without dead ends: 6924 [2022-11-16 11:22:47,924 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 [2022-11-16 11:22:47,925 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 [2022-11-16 11:22:47,925 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] [2022-11-16 11:22:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2022-11-16 11:22:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6924. [2022-11-16 11:22:48,326 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) [2022-11-16 11:22:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6924 states to 6924 states and 26727 transitions. [2022-11-16 11:22:48,361 INFO L78 Accepts]: Start accepts. Automaton has 6924 states and 26727 transitions. Word has length 6 [2022-11-16 11:22:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:48,361 INFO L495 AbstractCegarLoop]: Abstraction has 6924 states and 26727 transitions. [2022-11-16 11:22:48,362 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) [2022-11-16 11:22:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6924 states and 26727 transitions. [2022-11-16 11:22:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:22:48,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:48,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:48,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:48,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 259607005, now seen corresponding path program 1 times [2022-11-16 11:22:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950493713] [2022-11-16 11:22:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:48,577 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 [2022-11-16 11:22:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:48,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:48,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:22:48,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:48,784 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-16 11:22:48,784 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 [2022-11-16 11:22:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:48,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:48,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950493713] [2022-11-16 11:22:48,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950493713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:48,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:48,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666733210] [2022-11-16 11:22:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:48,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:48,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:48,819 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) [2022-11-16 11:22:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:48,997 INFO L93 Difference]: Finished difference Result 6771 states and 26222 transitions. [2022-11-16 11:22:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:48,998 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 [2022-11-16 11:22:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:49,036 INFO L225 Difference]: With dead ends: 6771 [2022-11-16 11:22:49,037 INFO L226 Difference]: Without dead ends: 6771 [2022-11-16 11:22:49,037 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 [2022-11-16 11:22:49,039 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 [2022-11-16 11:22:49,039 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] [2022-11-16 11:22:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2022-11-16 11:22:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6771. [2022-11-16 11:22:49,394 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) [2022-11-16 11:22:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 26222 transitions. [2022-11-16 11:22:49,426 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 26222 transitions. Word has length 7 [2022-11-16 11:22:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:49,427 INFO L495 AbstractCegarLoop]: Abstraction has 6771 states and 26222 transitions. [2022-11-16 11:22:49,427 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) [2022-11-16 11:22:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 26222 transitions. [2022-11-16 11:22:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:22:49,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:49,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:49,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:49,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 259607006, now seen corresponding path program 1 times [2022-11-16 11:22:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:49,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884596095] [2022-11-16 11:22:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:49,642 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 [2022-11-16 11:22:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:49,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:49,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:49,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:22:49,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:49,865 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:22:49,865 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 [2022-11-16 11:22:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:49,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:49,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884596095] [2022-11-16 11:22:49,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884596095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:49,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:49,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:49,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031018016] [2022-11-16 11:22:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:49,916 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) [2022-11-16 11:22:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:50,080 INFO L93 Difference]: Finished difference Result 6618 states and 25717 transitions. [2022-11-16 11:22:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:50,081 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 [2022-11-16 11:22:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:50,112 INFO L225 Difference]: With dead ends: 6618 [2022-11-16 11:22:50,113 INFO L226 Difference]: Without dead ends: 6618 [2022-11-16 11:22:50,113 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 [2022-11-16 11:22:50,114 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 [2022-11-16 11:22:50,114 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] [2022-11-16 11:22:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6618 states. [2022-11-16 11:22:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 6618. [2022-11-16 11:22:50,452 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) [2022-11-16 11:22:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 25717 transitions. [2022-11-16 11:22:50,496 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 25717 transitions. Word has length 7 [2022-11-16 11:22:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:50,497 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 25717 transitions. [2022-11-16 11:22:50,497 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) [2022-11-16 11:22:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 25717 transitions. [2022-11-16 11:22:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:50,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:50,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:50,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:50,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:50,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 333018567, now seen corresponding path program 1 times [2022-11-16 11:22:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:50,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133356678] [2022-11-16 11:22:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:50,714 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 [2022-11-16 11:22:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:50,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:50,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:50,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:22:50,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:50,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:50,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:50,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133356678] [2022-11-16 11:22:50,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133356678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:50,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:50,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:22:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584124642] [2022-11-16 11:22:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:50,885 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) [2022-11-16 11:22:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:51,592 INFO L93 Difference]: Finished difference Result 7422 states and 29213 transitions. [2022-11-16 11:22:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:22:51,593 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 [2022-11-16 11:22:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:51,624 INFO L225 Difference]: With dead ends: 7422 [2022-11-16 11:22:51,624 INFO L226 Difference]: Without dead ends: 7422 [2022-11-16 11:22:51,625 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 [2022-11-16 11:22:51,625 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:51,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 24 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:22:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2022-11-16 11:22:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 6750. [2022-11-16 11:22:52,018 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) [2022-11-16 11:22:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 26325 transitions. [2022-11-16 11:22:52,051 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 26325 transitions. Word has length 9 [2022-11-16 11:22:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:52,052 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 26325 transitions. [2022-11-16 11:22:52,052 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) [2022-11-16 11:22:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 26325 transitions. [2022-11-16 11:22:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:52,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:52,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:52,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:52,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:52,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash 374238048, now seen corresponding path program 1 times [2022-11-16 11:22:52,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:52,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227353484] [2022-11-16 11:22:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:52,270 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 [2022-11-16 11:22:52,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:52,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:52,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:52,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:22:52,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:52,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:52,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:52,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:52,501 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 11:22:52,501 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 [2022-11-16 11:22:52,525 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:22:52,526 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 [2022-11-16 11:22:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:52,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:52,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:52,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227353484] [2022-11-16 11:22:52,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227353484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:52,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:52,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693070969] [2022-11-16 11:22:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:52,770 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) [2022-11-16 11:22:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:52,871 INFO L93 Difference]: Finished difference Result 6749 states and 26320 transitions. [2022-11-16 11:22:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:52,871 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 [2022-11-16 11:22:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:52,894 INFO L225 Difference]: With dead ends: 6749 [2022-11-16 11:22:52,895 INFO L226 Difference]: Without dead ends: 6749 [2022-11-16 11:22:52,895 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 [2022-11-16 11:22:52,895 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:52,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-11-16 11:22:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2022-11-16 11:22:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6749. [2022-11-16 11:22:53,174 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) [2022-11-16 11:22:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 26320 transitions. [2022-11-16 11:22:53,206 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 26320 transitions. Word has length 9 [2022-11-16 11:22:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:53,206 INFO L495 AbstractCegarLoop]: Abstraction has 6749 states and 26320 transitions. [2022-11-16 11:22:53,206 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) [2022-11-16 11:22:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 26320 transitions. [2022-11-16 11:22:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:22:53,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:53,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:53,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:53,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:53,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 374238049, now seen corresponding path program 1 times [2022-11-16 11:22:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023837007] [2022-11-16 11:22:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:53,421 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 [2022-11-16 11:22:53,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:53,422 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:53,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:22:53,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:53,630 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:22:53,630 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 [2022-11-16 11:22:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:53,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:53,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:53,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023837007] [2022-11-16 11:22:53,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023837007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:53,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:53,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983302040] [2022-11-16 11:22:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:53,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:22:53,734 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) [2022-11-16 11:22:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:53,890 INFO L93 Difference]: Finished difference Result 5093 states and 19461 transitions. [2022-11-16 11:22:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:53,891 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 [2022-11-16 11:22:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:53,907 INFO L225 Difference]: With dead ends: 5093 [2022-11-16 11:22:53,908 INFO L226 Difference]: Without dead ends: 5093 [2022-11-16 11:22:53,908 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 [2022-11-16 11:22:53,909 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 [2022-11-16 11:22:53,909 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] [2022-11-16 11:22:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2022-11-16 11:22:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 5093. [2022-11-16 11:22:54,035 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) [2022-11-16 11:22:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 19461 transitions. [2022-11-16 11:22:54,200 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 19461 transitions. Word has length 9 [2022-11-16 11:22:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:54,200 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 19461 transitions. [2022-11-16 11:22:54,201 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) [2022-11-16 11:22:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 19461 transitions. [2022-11-16 11:22:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:22:54,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:54,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:54,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:54,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:54,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1179927241, now seen corresponding path program 1 times [2022-11-16 11:22:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:54,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602195726] [2022-11-16 11:22:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:54,417 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 [2022-11-16 11:22:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:54,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:54,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:54,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:22:54,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:54,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:54,634 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 [2022-11-16 11:22:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:54,709 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-16 11:22:54,710 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 [2022-11-16 11:22:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:54,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:54,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:54,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602195726] [2022-11-16 11:22:54,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602195726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:54,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:54,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27818372] [2022-11-16 11:22:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:54,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:54,986 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) [2022-11-16 11:22:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:55,074 INFO L93 Difference]: Finished difference Result 5091 states and 19451 transitions. [2022-11-16 11:22:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:55,075 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 [2022-11-16 11:22:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:55,090 INFO L225 Difference]: With dead ends: 5091 [2022-11-16 11:22:55,090 INFO L226 Difference]: Without dead ends: 5091 [2022-11-16 11:22:55,090 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 [2022-11-16 11:22:55,091 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 [2022-11-16 11:22:55,091 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] [2022-11-16 11:22:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2022-11-16 11:22:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 5091. [2022-11-16 11:22:55,211 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) [2022-11-16 11:22:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 19451 transitions. [2022-11-16 11:22:55,232 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 19451 transitions. Word has length 10 [2022-11-16 11:22:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:55,232 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 19451 transitions. [2022-11-16 11:22:55,232 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) [2022-11-16 11:22:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 19451 transitions. [2022-11-16 11:22:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:22:55,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:55,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:55,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:55,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:55,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1874566724, now seen corresponding path program 1 times [2022-11-16 11:22:55,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:55,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349064613] [2022-11-16 11:22:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:55,446 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 [2022-11-16 11:22:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:55,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:55,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:55,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:22:55,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:55,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:55,644 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 [2022-11-16 11:22:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:55,723 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-16 11:22:55,723 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 [2022-11-16 11:22:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:56,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:56,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:56,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349064613] [2022-11-16 11:22:56,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349064613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:56,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:56,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637522536] [2022-11-16 11:22:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:56,166 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) [2022-11-16 11:22:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:56,284 INFO L93 Difference]: Finished difference Result 5086 states and 19426 transitions. [2022-11-16 11:22:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:56,285 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 [2022-11-16 11:22:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:56,311 INFO L225 Difference]: With dead ends: 5086 [2022-11-16 11:22:56,311 INFO L226 Difference]: Without dead ends: 5086 [2022-11-16 11:22:56,311 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 [2022-11-16 11:22:56,312 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 [2022-11-16 11:22:56,313 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] [2022-11-16 11:22:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-11-16 11:22:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-11-16 11:22:56,486 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) [2022-11-16 11:22:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 19426 transitions. [2022-11-16 11:22:56,519 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 19426 transitions. Word has length 10 [2022-11-16 11:22:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:56,520 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 19426 transitions. [2022-11-16 11:22:56,520 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) [2022-11-16 11:22:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 19426 transitions. [2022-11-16 11:22:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:22:56,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:56,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:56,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:56,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:56,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1283521576, now seen corresponding path program 1 times [2022-11-16 11:22:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324524224] [2022-11-16 11:22:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:56,736 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 [2022-11-16 11:22:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:56,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:56,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:56,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:22:56,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:56,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:56,998 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:22:56,998 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 [2022-11-16 11:22:57,017 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 [2022-11-16 11:22:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:57,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:57,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:57,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324524224] [2022-11-16 11:22:57,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324524224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:57,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:57,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:22:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637810201] [2022-11-16 11:22:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:57,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:57,260 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) [2022-11-16 11:22:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:57,360 INFO L93 Difference]: Finished difference Result 5081 states and 19400 transitions. [2022-11-16 11:22:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:22:57,361 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 [2022-11-16 11:22:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:57,381 INFO L225 Difference]: With dead ends: 5081 [2022-11-16 11:22:57,382 INFO L226 Difference]: Without dead ends: 5081 [2022-11-16 11:22:57,382 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 [2022-11-16 11:22:57,383 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-11-16 11:22:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5081 states. [2022-11-16 11:22:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5081 to 5081. [2022-11-16 11:22:57,591 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) [2022-11-16 11:22:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 19400 transitions. [2022-11-16 11:22:57,604 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 19400 transitions. Word has length 10 [2022-11-16 11:22:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:57,605 INFO L495 AbstractCegarLoop]: Abstraction has 5081 states and 19400 transitions. [2022-11-16 11:22:57,605 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) [2022-11-16 11:22:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 19400 transitions. [2022-11-16 11:22:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:22:57,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:57,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:57,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:57,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1283522227, now seen corresponding path program 1 times [2022-11-16 11:22:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:57,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832059853] [2022-11-16 11:22:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:57,814 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 [2022-11-16 11:22:57,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:57,815 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:57,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:22:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:57,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:58,049 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:22:58,050 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 [2022-11-16 11:22:58,060 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 [2022-11-16 11:22:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:58,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:58,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832059853] [2022-11-16 11:22:58,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832059853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:58,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:58,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:22:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588390112] [2022-11-16 11:22:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:58,259 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) [2022-11-16 11:22:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:58,362 INFO L93 Difference]: Finished difference Result 5079 states and 19390 transitions. [2022-11-16 11:22:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:22:58,363 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 [2022-11-16 11:22:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:58,385 INFO L225 Difference]: With dead ends: 5079 [2022-11-16 11:22:58,386 INFO L226 Difference]: Without dead ends: 5079 [2022-11-16 11:22:58,386 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 [2022-11-16 11:22:58,391 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-16 11:22:58,392 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] [2022-11-16 11:22:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2022-11-16 11:22:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 5079. [2022-11-16 11:22:58,523 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) [2022-11-16 11:22:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 19390 transitions. [2022-11-16 11:22:58,546 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 19390 transitions. Word has length 10 [2022-11-16 11:22:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:58,546 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 19390 transitions. [2022-11-16 11:22:58,546 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) [2022-11-16 11:22:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 19390 transitions. [2022-11-16 11:22:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:22:58,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:58,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:58,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:58,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:58,760 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 88819415, now seen corresponding path program 1 times [2022-11-16 11:22:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:58,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303002347] [2022-11-16 11:22:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:58,761 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 [2022-11-16 11:22:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:58,762 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:58,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:58,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:22:58,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:58,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:58,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:58,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303002347] [2022-11-16 11:22:58,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303002347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:58,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:58,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566862920] [2022-11-16 11:22:58,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:58,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:58,872 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) [2022-11-16 11:22:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:59,076 INFO L93 Difference]: Finished difference Result 4010 states and 13074 transitions. [2022-11-16 11:22:59,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:59,077 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 [2022-11-16 11:22:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:59,089 INFO L225 Difference]: With dead ends: 4010 [2022-11-16 11:22:59,089 INFO L226 Difference]: Without dead ends: 4010 [2022-11-16 11:22:59,090 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 [2022-11-16 11:22:59,090 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 [2022-11-16 11:22:59,091 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] [2022-11-16 11:22:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2022-11-16 11:22:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 4010. [2022-11-16 11:22:59,165 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) [2022-11-16 11:22:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 13074 transitions. [2022-11-16 11:22:59,175 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 13074 transitions. Word has length 11 [2022-11-16 11:22:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:59,175 INFO L495 AbstractCegarLoop]: Abstraction has 4010 states and 13074 transitions. [2022-11-16 11:22:59,175 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) [2022-11-16 11:22:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 13074 transitions. [2022-11-16 11:22:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:22:59,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:59,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:59,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:59,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:59,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:22:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2091729705, now seen corresponding path program 2 times [2022-11-16 11:22:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:59,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043174572] [2022-11-16 11:22:59,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:59,378 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 [2022-11-16 11:22:59,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:59,379 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:59,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:59,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:22:59,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:59,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:22:59,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:59,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:59,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:59,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043174572] [2022-11-16 11:22:59,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043174572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:59,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:59,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:22:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910512137] [2022-11-16 11:22:59,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:59,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:22:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:22:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:22:59,509 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) [2022-11-16 11:22:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:59,790 INFO L93 Difference]: Finished difference Result 5100 states and 15836 transitions. [2022-11-16 11:22:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:22:59,791 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 [2022-11-16 11:22:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:59,803 INFO L225 Difference]: With dead ends: 5100 [2022-11-16 11:22:59,803 INFO L226 Difference]: Without dead ends: 5100 [2022-11-16 11:22:59,803 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 [2022-11-16 11:22:59,803 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:59,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 46 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:22:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2022-11-16 11:22:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 3640. [2022-11-16 11:22:59,865 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) [2022-11-16 11:22:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 11674 transitions. [2022-11-16 11:22:59,874 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 11674 transitions. Word has length 11 [2022-11-16 11:22:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:59,874 INFO L495 AbstractCegarLoop]: Abstraction has 3640 states and 11674 transitions. [2022-11-16 11:22:59,874 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) [2022-11-16 11:22:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 11674 transitions. [2022-11-16 11:22:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:22:59,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:59,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:59,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:00,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:00,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2017972876, now seen corresponding path program 1 times [2022-11-16 11:23:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:00,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639134625] [2022-11-16 11:23:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:00,076 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 [2022-11-16 11:23:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:00,077 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:00,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:00,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:00,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:00,311 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:00,312 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 [2022-11-16 11:23:00,330 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 [2022-11-16 11:23:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:00,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:00,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:00,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639134625] [2022-11-16 11:23:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639134625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:00,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:00,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:00,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252044464] [2022-11-16 11:23:00,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:00,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:00,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:00,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:00,549 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) [2022-11-16 11:23:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:00,636 INFO L93 Difference]: Finished difference Result 3691 states and 11884 transitions. [2022-11-16 11:23:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:00,636 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 [2022-11-16 11:23:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:00,647 INFO L225 Difference]: With dead ends: 3691 [2022-11-16 11:23:00,647 INFO L226 Difference]: Without dead ends: 3691 [2022-11-16 11:23:00,648 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 [2022-11-16 11:23:00,648 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 [2022-11-16 11:23:00,649 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] [2022-11-16 11:23:00,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2022-11-16 11:23:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2022-11-16 11:23:00,731 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) [2022-11-16 11:23:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 11884 transitions. [2022-11-16 11:23:00,745 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 11884 transitions. Word has length 11 [2022-11-16 11:23:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:00,745 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 11884 transitions. [2022-11-16 11:23:00,746 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) [2022-11-16 11:23:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 11884 transitions. [2022-11-16 11:23:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:23:00,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:00,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:00,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:00,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:00,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 553893546, now seen corresponding path program 2 times [2022-11-16 11:23:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:00,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894279689] [2022-11-16 11:23:00,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:00,963 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 [2022-11-16 11:23:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:00,964 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:01,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:01,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:01,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:23:01,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:01,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:01,242 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:01,242 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 [2022-11-16 11:23:01,255 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 [2022-11-16 11:23:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:01,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:01,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:01,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894279689] [2022-11-16 11:23:01,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894279689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:01,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:01,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412512970] [2022-11-16 11:23:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:01,479 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) [2022-11-16 11:23:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:01,563 INFO L93 Difference]: Finished difference Result 3660 states and 11719 transitions. [2022-11-16 11:23:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:01,563 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 [2022-11-16 11:23:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:01,573 INFO L225 Difference]: With dead ends: 3660 [2022-11-16 11:23:01,573 INFO L226 Difference]: Without dead ends: 3660 [2022-11-16 11:23:01,573 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 [2022-11-16 11:23:01,574 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-16 11:23:01,574 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] [2022-11-16 11:23:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2022-11-16 11:23:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3609. [2022-11-16 11:23:01,654 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) [2022-11-16 11:23:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 11509 transitions. [2022-11-16 11:23:01,666 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 11509 transitions. Word has length 11 [2022-11-16 11:23:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:01,667 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 11509 transitions. [2022-11-16 11:23:01,667 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) [2022-11-16 11:23:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 11509 transitions. [2022-11-16 11:23:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:23:01,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:01,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:01,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:01,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1075376596, now seen corresponding path program 1 times [2022-11-16 11:23:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:01,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187235623] [2022-11-16 11:23:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:01,881 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 [2022-11-16 11:23:01,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:01,882 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:01,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:01,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:01,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:02,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:02,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:02,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187235623] [2022-11-16 11:23:02,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187235623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:02,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:02,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496335283] [2022-11-16 11:23:02,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:02,045 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) [2022-11-16 11:23:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:02,761 INFO L93 Difference]: Finished difference Result 7123 states and 22978 transitions. [2022-11-16 11:23:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:23:02,762 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 [2022-11-16 11:23:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:02,784 INFO L225 Difference]: With dead ends: 7123 [2022-11-16 11:23:02,785 INFO L226 Difference]: Without dead ends: 7123 [2022-11-16 11:23:02,785 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 [2022-11-16 11:23:02,786 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 [2022-11-16 11:23:02,786 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] [2022-11-16 11:23:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-11-16 11:23:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 4420. [2022-11-16 11:23:02,950 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) [2022-11-16 11:23:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14362 transitions. [2022-11-16 11:23:02,967 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14362 transitions. Word has length 12 [2022-11-16 11:23:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:02,967 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 14362 transitions. [2022-11-16 11:23:02,967 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) [2022-11-16 11:23:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14362 transitions. [2022-11-16 11:23:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:23:02,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:02,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:02,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:03,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:03,172 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1034157115, now seen corresponding path program 1 times [2022-11-16 11:23:03,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:03,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111546793] [2022-11-16 11:23:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:03,173 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 [2022-11-16 11:23:03,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:03,174 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:03,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:03,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:03,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:03,413 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:03,414 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 [2022-11-16 11:23:03,423 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 [2022-11-16 11:23:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:03,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:03,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:03,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111546793] [2022-11-16 11:23:03,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111546793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:03,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:03,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:03,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970216215] [2022-11-16 11:23:03,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:03,696 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) [2022-11-16 11:23:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:03,776 INFO L93 Difference]: Finished difference Result 4432 states and 14390 transitions. [2022-11-16 11:23:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:03,777 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 [2022-11-16 11:23:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:03,789 INFO L225 Difference]: With dead ends: 4432 [2022-11-16 11:23:03,790 INFO L226 Difference]: Without dead ends: 4432 [2022-11-16 11:23:03,790 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 [2022-11-16 11:23:03,790 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 [2022-11-16 11:23:03,791 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] [2022-11-16 11:23:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2022-11-16 11:23:03,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4424. [2022-11-16 11:23:03,896 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) [2022-11-16 11:23:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 14374 transitions. [2022-11-16 11:23:03,914 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 14374 transitions. Word has length 12 [2022-11-16 11:23:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:03,915 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 14374 transitions. [2022-11-16 11:23:03,915 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) [2022-11-16 11:23:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 14374 transitions. [2022-11-16 11:23:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:23:03,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:03,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:03,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:04,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -263760913, now seen corresponding path program 2 times [2022-11-16 11:23:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:04,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769975740] [2022-11-16 11:23:04,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:04,129 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 [2022-11-16 11:23:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:04,130 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:04,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:04,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:04,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:04,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:23:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:04,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:04,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:04,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:04,355 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 11:23:04,355 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 [2022-11-16 11:23:04,377 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:23:04,378 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 [2022-11-16 11:23:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:04,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:04,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:04,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769975740] [2022-11-16 11:23:04,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769975740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:04,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:04,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:23:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105239120] [2022-11-16 11:23:04,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:04,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:23:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:04,727 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) [2022-11-16 11:23:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:04,826 INFO L93 Difference]: Finished difference Result 4423 states and 14370 transitions. [2022-11-16 11:23:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:04,827 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 [2022-11-16 11:23:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:04,846 INFO L225 Difference]: With dead ends: 4423 [2022-11-16 11:23:04,847 INFO L226 Difference]: Without dead ends: 4423 [2022-11-16 11:23:04,847 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 [2022-11-16 11:23:04,854 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 [2022-11-16 11:23:04,854 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] [2022-11-16 11:23:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-11-16 11:23:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4419. [2022-11-16 11:23:04,991 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) [2022-11-16 11:23:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 14358 transitions. [2022-11-16 11:23:05,016 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 14358 transitions. Word has length 12 [2022-11-16 11:23:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:05,016 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 14358 transitions. [2022-11-16 11:23:05,016 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) [2022-11-16 11:23:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 14358 transitions. [2022-11-16 11:23:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:23:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:05,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:05,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:05,231 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1867349837, now seen corresponding path program 1 times [2022-11-16 11:23:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395802854] [2022-11-16 11:23:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:05,232 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 [2022-11-16 11:23:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:05,233 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:05,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:05,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:05,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:05,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:05,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395802854] [2022-11-16 11:23:05,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395802854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:05,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:05,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:23:05,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870528416] [2022-11-16 11:23:05,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:23:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:23:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:23:05,397 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) [2022-11-16 11:23:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:05,709 INFO L93 Difference]: Finished difference Result 2780 states and 6935 transitions. [2022-11-16 11:23:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:23:05,710 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 [2022-11-16 11:23:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:05,716 INFO L225 Difference]: With dead ends: 2780 [2022-11-16 11:23:05,716 INFO L226 Difference]: Without dead ends: 2780 [2022-11-16 11:23:05,716 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 [2022-11-16 11:23:05,717 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 [2022-11-16 11:23:05,717 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] [2022-11-16 11:23:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2022-11-16 11:23:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2368. [2022-11-16 11:23:05,762 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) [2022-11-16 11:23:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 6056 transitions. [2022-11-16 11:23:05,768 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 6056 transitions. Word has length 12 [2022-11-16 11:23:05,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:05,769 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 6056 transitions. [2022-11-16 11:23:05,769 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) [2022-11-16 11:23:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 6056 transitions. [2022-11-16 11:23:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:23:05,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:05,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:05,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:05,983 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:05,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash -809311308, now seen corresponding path program 1 times [2022-11-16 11:23:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:05,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154061972] [2022-11-16 11:23:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:05,985 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 [2022-11-16 11:23:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:05,986 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:06,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:23:06,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:06,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:06,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:06,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:06,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:06,198 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 11:23:06,198 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 [2022-11-16 11:23:06,222 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:23:06,222 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 [2022-11-16 11:23:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:06,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:06,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154061972] [2022-11-16 11:23:06,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154061972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:06,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:06,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:23:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128392211] [2022-11-16 11:23:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:23:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:06,594 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) [2022-11-16 11:23:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:06,667 INFO L93 Difference]: Finished difference Result 2367 states and 6052 transitions. [2022-11-16 11:23:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:06,668 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 [2022-11-16 11:23:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:06,675 INFO L225 Difference]: With dead ends: 2367 [2022-11-16 11:23:06,675 INFO L226 Difference]: Without dead ends: 2367 [2022-11-16 11:23:06,675 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 [2022-11-16 11:23:06,676 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 [2022-11-16 11:23:06,676 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] [2022-11-16 11:23:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-11-16 11:23:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2367. [2022-11-16 11:23:06,734 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) [2022-11-16 11:23:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 6052 transitions. [2022-11-16 11:23:06,743 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 6052 transitions. Word has length 12 [2022-11-16 11:23:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:06,743 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 6052 transitions. [2022-11-16 11:23:06,743 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) [2022-11-16 11:23:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6052 transitions. [2022-11-16 11:23:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:06,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:06,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:06,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 11:23:06,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:06,956 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1163989631, now seen corresponding path program 1 times [2022-11-16 11:23:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:06,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755387183] [2022-11-16 11:23:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:06,957 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 [2022-11-16 11:23:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:06,958 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:06,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:07,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:07,199 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:07,199 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 [2022-11-16 11:23:07,210 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 [2022-11-16 11:23:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:07,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:07,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:07,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755387183] [2022-11-16 11:23:07,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755387183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:07,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:07,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122067263] [2022-11-16 11:23:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:07,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:07,503 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) [2022-11-16 11:23:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:07,575 INFO L93 Difference]: Finished difference Result 2419 states and 6170 transitions. [2022-11-16 11:23:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:07,576 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 [2022-11-16 11:23:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:07,581 INFO L225 Difference]: With dead ends: 2419 [2022-11-16 11:23:07,582 INFO L226 Difference]: Without dead ends: 2419 [2022-11-16 11:23:07,582 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 [2022-11-16 11:23:07,582 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-16 11:23:07,583 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] [2022-11-16 11:23:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-16 11:23:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2387. [2022-11-16 11:23:07,630 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) [2022-11-16 11:23:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 6097 transitions. [2022-11-16 11:23:07,637 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 6097 transitions. Word has length 13 [2022-11-16 11:23:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:07,638 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 6097 transitions. [2022-11-16 11:23:07,638 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) [2022-11-16 11:23:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 6097 transitions. [2022-11-16 11:23:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:07,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:07,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:07,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:07,840 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635575, now seen corresponding path program 2 times [2022-11-16 11:23:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035720109] [2022-11-16 11:23:07,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:07,842 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 [2022-11-16 11:23:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:07,843 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:07,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:07,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:07,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:07,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:07,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:08,090 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:08,091 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 [2022-11-16 11:23:08,103 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 [2022-11-16 11:23:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:08,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:08,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:08,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035720109] [2022-11-16 11:23:08,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035720109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:08,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:08,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440732159] [2022-11-16 11:23:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:08,401 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) [2022-11-16 11:23:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:08,473 INFO L93 Difference]: Finished difference Result 2455 states and 6253 transitions. [2022-11-16 11:23:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:08,474 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 [2022-11-16 11:23:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:08,479 INFO L225 Difference]: With dead ends: 2455 [2022-11-16 11:23:08,479 INFO L226 Difference]: Without dead ends: 2455 [2022-11-16 11:23:08,479 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 [2022-11-16 11:23:08,480 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 [2022-11-16 11:23:08,480 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] [2022-11-16 11:23:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-11-16 11:23:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2447. [2022-11-16 11:23:08,539 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) [2022-11-16 11:23:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 6237 transitions. [2022-11-16 11:23:08,547 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 6237 transitions. Word has length 13 [2022-11-16 11:23:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:08,548 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 6237 transitions. [2022-11-16 11:23:08,548 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) [2022-11-16 11:23:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 6237 transitions. [2022-11-16 11:23:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:08,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:08,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:08,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:08,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:08,762 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1994098669, now seen corresponding path program 1 times [2022-11-16 11:23:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448228512] [2022-11-16 11:23:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:08,763 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 [2022-11-16 11:23:08,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:08,764 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:08,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:08,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:08,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:08,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:09,014 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:09,015 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 [2022-11-16 11:23:09,037 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 [2022-11-16 11:23:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:09,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:09,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448228512] [2022-11-16 11:23:09,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448228512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:09,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:09,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:09,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509083530] [2022-11-16 11:23:09,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:09,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:09,294 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) [2022-11-16 11:23:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:09,367 INFO L93 Difference]: Finished difference Result 2460 states and 6269 transitions. [2022-11-16 11:23:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:09,368 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 [2022-11-16 11:23:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:09,372 INFO L225 Difference]: With dead ends: 2460 [2022-11-16 11:23:09,373 INFO L226 Difference]: Without dead ends: 2460 [2022-11-16 11:23:09,373 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 [2022-11-16 11:23:09,373 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 [2022-11-16 11:23:09,373 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] [2022-11-16 11:23:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-11-16 11:23:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2452. [2022-11-16 11:23:09,420 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) [2022-11-16 11:23:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 6253 transitions. [2022-11-16 11:23:09,426 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 6253 transitions. Word has length 13 [2022-11-16 11:23:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:09,427 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 6253 transitions. [2022-11-16 11:23:09,427 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) [2022-11-16 11:23:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 6253 transitions. [2022-11-16 11:23:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:09,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:09,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:09,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-16 11:23:09,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:09,631 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1994099320, now seen corresponding path program 1 times [2022-11-16 11:23:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:09,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81737995] [2022-11-16 11:23:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:09,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:09,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:09,633 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:09,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:09,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:23:09,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:09,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:09,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:09,867 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 11:23:09,867 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 [2022-11-16 11:23:09,891 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:23:09,892 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 [2022-11-16 11:23:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:10,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:10,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:10,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81737995] [2022-11-16 11:23:10,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81737995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:10,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:10,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:23:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018150217] [2022-11-16 11:23:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:23:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:10,277 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) [2022-11-16 11:23:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:10,354 INFO L93 Difference]: Finished difference Result 2450 states and 6249 transitions. [2022-11-16 11:23:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:10,355 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 [2022-11-16 11:23:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:10,361 INFO L225 Difference]: With dead ends: 2450 [2022-11-16 11:23:10,362 INFO L226 Difference]: Without dead ends: 2450 [2022-11-16 11:23:10,362 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 [2022-11-16 11:23:10,363 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 [2022-11-16 11:23:10,363 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] [2022-11-16 11:23:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-11-16 11:23:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2022-11-16 11:23:10,422 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) [2022-11-16 11:23:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 6249 transitions. [2022-11-16 11:23:10,431 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 6249 transitions. Word has length 13 [2022-11-16 11:23:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:10,432 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 6249 transitions. [2022-11-16 11:23:10,432 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) [2022-11-16 11:23:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 6249 transitions. [2022-11-16 11:23:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:10,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:10,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:10,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:10,635 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash 413346617, now seen corresponding path program 3 times [2022-11-16 11:23:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:10,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130403104] [2022-11-16 11:23:10,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:23:10,637 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 [2022-11-16 11:23:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:10,637 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:10,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:10,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:23:10,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:10,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:10,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:10,887 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:10,887 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 [2022-11-16 11:23:10,904 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 [2022-11-16 11:23:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:11,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:11,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:11,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130403104] [2022-11-16 11:23:11,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130403104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:11,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:11,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581310027] [2022-11-16 11:23:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:11,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:11,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:11,171 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) [2022-11-16 11:23:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:11,234 INFO L93 Difference]: Finished difference Result 2490 states and 6339 transitions. [2022-11-16 11:23:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:11,234 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 [2022-11-16 11:23:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:11,239 INFO L225 Difference]: With dead ends: 2490 [2022-11-16 11:23:11,239 INFO L226 Difference]: Without dead ends: 2490 [2022-11-16 11:23:11,239 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 [2022-11-16 11:23:11,240 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 [2022-11-16 11:23:11,241 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] [2022-11-16 11:23:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-11-16 11:23:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2462. [2022-11-16 11:23:11,286 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) [2022-11-16 11:23:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 6277 transitions. [2022-11-16 11:23:11,292 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 6277 transitions. Word has length 13 [2022-11-16 11:23:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:11,293 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 6277 transitions. [2022-11-16 11:23:11,293 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) [2022-11-16 11:23:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 6277 transitions. [2022-11-16 11:23:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:11,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:11,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:11,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:11,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:11,499 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:11,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash 413347113, now seen corresponding path program 2 times [2022-11-16 11:23:11,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:11,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432702330] [2022-11-16 11:23:11,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:11,500 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 [2022-11-16 11:23:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:11,501 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:11,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:11,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:11,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:11,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:23:11,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:11,746 INFO L321 Elim1Store]: treesize reduction 59, result has 34.4 percent of original size [2022-11-16 11:23:11,746 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 [2022-11-16 11:23:11,757 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 [2022-11-16 11:23:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:12,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:12,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:12,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432702330] [2022-11-16 11:23:12,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432702330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:12,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:12,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30138060] [2022-11-16 11:23:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:23:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:23:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:23:12,049 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) [2022-11-16 11:23:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:12,123 INFO L93 Difference]: Finished difference Result 2467 states and 6293 transitions. [2022-11-16 11:23:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:23:12,124 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 [2022-11-16 11:23:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:12,131 INFO L225 Difference]: With dead ends: 2467 [2022-11-16 11:23:12,131 INFO L226 Difference]: Without dead ends: 2467 [2022-11-16 11:23:12,132 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 [2022-11-16 11:23:12,132 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 [2022-11-16 11:23:12,133 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] [2022-11-16 11:23:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-11-16 11:23:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2458. [2022-11-16 11:23:12,193 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) [2022-11-16 11:23:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 6265 transitions. [2022-11-16 11:23:12,203 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 6265 transitions. Word has length 13 [2022-11-16 11:23:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 6265 transitions. [2022-11-16 11:23:12,203 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) [2022-11-16 11:23:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 6265 transitions. [2022-11-16 11:23:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:12,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:12,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:12,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:12,418 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 700029599, now seen corresponding path program 1 times [2022-11-16 11:23:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:12,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760756729] [2022-11-16 11:23:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:12,420 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 [2022-11-16 11:23:12,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:12,421 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:12,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:12,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:12,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:12,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:12,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:12,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760756729] [2022-11-16 11:23:12,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760756729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:12,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:12,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:23:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898130428] [2022-11-16 11:23:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:12,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:12,662 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) [2022-11-16 11:23:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:13,284 INFO L93 Difference]: Finished difference Result 2644 states and 6792 transitions. [2022-11-16 11:23:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:23:13,285 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 [2022-11-16 11:23:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:13,290 INFO L225 Difference]: With dead ends: 2644 [2022-11-16 11:23:13,290 INFO L226 Difference]: Without dead ends: 2644 [2022-11-16 11:23:13,291 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 [2022-11-16 11:23:13,291 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-11-16 11:23:13,291 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] [2022-11-16 11:23:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2022-11-16 11:23:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2474. [2022-11-16 11:23:13,335 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) [2022-11-16 11:23:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6317 transitions. [2022-11-16 11:23:13,341 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6317 transitions. Word has length 13 [2022-11-16 11:23:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:13,342 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 6317 transitions. [2022-11-16 11:23:13,342 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) [2022-11-16 11:23:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6317 transitions. [2022-11-16 11:23:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:23:13,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:13,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:13,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:13,544 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 662860921, now seen corresponding path program 4 times [2022-11-16 11:23:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:13,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589563310] [2022-11-16 11:23:13,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:23:13,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:13,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:13,546 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:13,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:23:13,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:13,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:23:13,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:13,771 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2022-11-16 11:23:13,772 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 [2022-11-16 11:23:13,781 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 [2022-11-16 11:23:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:13,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:13,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:13,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589563310] [2022-11-16 11:23:13,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589563310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:13,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:13,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:23:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572391124] [2022-11-16 11:23:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:13,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:23:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:13,893 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) [2022-11-16 11:23:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:13,994 INFO L93 Difference]: Finished difference Result 1963 states and 4845 transitions. [2022-11-16 11:23:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:13,995 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 [2022-11-16 11:23:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:13,998 INFO L225 Difference]: With dead ends: 1963 [2022-11-16 11:23:13,998 INFO L226 Difference]: Without dead ends: 1963 [2022-11-16 11:23:13,998 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 [2022-11-16 11:23:13,999 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 [2022-11-16 11:23:13,999 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] [2022-11-16 11:23:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-11-16 11:23:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1870. [2022-11-16 11:23:14,030 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) [2022-11-16 11:23:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4628 transitions. [2022-11-16 11:23:14,034 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4628 transitions. Word has length 13 [2022-11-16 11:23:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:14,035 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 4628 transitions. [2022-11-16 11:23:14,035 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) [2022-11-16 11:23:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4628 transitions. [2022-11-16 11:23:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:23:14,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:14,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:14,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:14,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:14,237 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:14,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1791654020, now seen corresponding path program 1 times [2022-11-16 11:23:14,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:14,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862986824] [2022-11-16 11:23:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:14,238 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 [2022-11-16 11:23:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:14,239 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:14,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:14,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:14,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:14,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:14,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862986824] [2022-11-16 11:23:14,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862986824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:14,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:14,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250722182] [2022-11-16 11:23:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:14,418 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) [2022-11-16 11:23:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:15,054 INFO L93 Difference]: Finished difference Result 2798 states and 6917 transitions. [2022-11-16 11:23:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:23:15,054 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 [2022-11-16 11:23:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:15,061 INFO L225 Difference]: With dead ends: 2798 [2022-11-16 11:23:15,061 INFO L226 Difference]: Without dead ends: 2798 [2022-11-16 11:23:15,061 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 [2022-11-16 11:23:15,062 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 173 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:15,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 42 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:23:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-16 11:23:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1980. [2022-11-16 11:23:15,115 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) [2022-11-16 11:23:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 4914 transitions. [2022-11-16 11:23:15,122 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 4914 transitions. Word has length 16 [2022-11-16 11:23:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:15,122 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 4914 transitions. [2022-11-16 11:23:15,123 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) [2022-11-16 11:23:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 4914 transitions. [2022-11-16 11:23:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:23:15,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:15,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:15,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:15,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:15,336 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 687635400, now seen corresponding path program 1 times [2022-11-16 11:23:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174754022] [2022-11-16 11:23:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:15,338 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 [2022-11-16 11:23:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:15,339 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:15,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:15,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:15,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:15,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:15,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:15,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174754022] [2022-11-16 11:23:15,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174754022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:15,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:15,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:23:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233306500] [2022-11-16 11:23:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:15,590 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) [2022-11-16 11:23:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:16,107 INFO L93 Difference]: Finished difference Result 2084 states and 5188 transitions. [2022-11-16 11:23:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:16,108 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 [2022-11-16 11:23:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:16,112 INFO L225 Difference]: With dead ends: 2084 [2022-11-16 11:23:16,112 INFO L226 Difference]: Without dead ends: 2084 [2022-11-16 11:23:16,113 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 [2022-11-16 11:23:16,114 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:16,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 21 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:23:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2022-11-16 11:23:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1940. [2022-11-16 11:23:16,157 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) [2022-11-16 11:23:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 4808 transitions. [2022-11-16 11:23:16,164 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 4808 transitions. Word has length 16 [2022-11-16 11:23:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:16,164 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 4808 transitions. [2022-11-16 11:23:16,164 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) [2022-11-16 11:23:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 4808 transitions. [2022-11-16 11:23:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:23:16,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:16,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:16,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:23:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:16,378 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2136832846, now seen corresponding path program 1 times [2022-11-16 11:23:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129425447] [2022-11-16 11:23:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:16,379 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 [2022-11-16 11:23:16,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:16,380 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:16,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:16,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:16,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:16,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:16,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:16,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129425447] [2022-11-16 11:23:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129425447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:16,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:23:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545741692] [2022-11-16 11:23:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:16,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:16,611 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) [2022-11-16 11:23:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:17,048 INFO L93 Difference]: Finished difference Result 2056 states and 5114 transitions. [2022-11-16 11:23:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:17,049 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 [2022-11-16 11:23:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:17,053 INFO L225 Difference]: With dead ends: 2056 [2022-11-16 11:23:17,053 INFO L226 Difference]: Without dead ends: 2056 [2022-11-16 11:23:17,053 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 [2022-11-16 11:23:17,054 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 [2022-11-16 11:23:17,054 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] [2022-11-16 11:23:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-11-16 11:23:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1898. [2022-11-16 11:23:17,088 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) [2022-11-16 11:23:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 4697 transitions. [2022-11-16 11:23:17,092 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 4697 transitions. Word has length 16 [2022-11-16 11:23:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:17,092 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 4697 transitions. [2022-11-16 11:23:17,093 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) [2022-11-16 11:23:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 4697 transitions. [2022-11-16 11:23:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:23:17,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:17,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:17,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:17,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:17,295 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -221603901, now seen corresponding path program 1 times [2022-11-16 11:23:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:17,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076575852] [2022-11-16 11:23:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:17,296 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 [2022-11-16 11:23:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:17,297 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:17,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:17,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:17,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:17,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:17,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:17,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076575852] [2022-11-16 11:23:17,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076575852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:17,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:17,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:17,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531742264] [2022-11-16 11:23:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:17,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:17,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:17,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:17,496 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) [2022-11-16 11:23:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:18,059 INFO L93 Difference]: Finished difference Result 2674 states and 6589 transitions. [2022-11-16 11:23:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:18,061 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 [2022-11-16 11:23:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:18,065 INFO L225 Difference]: With dead ends: 2674 [2022-11-16 11:23:18,065 INFO L226 Difference]: Without dead ends: 2674 [2022-11-16 11:23:18,065 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 [2022-11-16 11:23:18,066 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 [2022-11-16 11:23:18,066 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] [2022-11-16 11:23:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-16 11:23:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1788. [2022-11-16 11:23:18,102 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) [2022-11-16 11:23:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 4400 transitions. [2022-11-16 11:23:18,106 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 4400 transitions. Word has length 19 [2022-11-16 11:23:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 4400 transitions. [2022-11-16 11:23:18,106 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) [2022-11-16 11:23:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 4400 transitions. [2022-11-16 11:23:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:23:18,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:18,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:18,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:18,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:18,320 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1227593545, now seen corresponding path program 1 times [2022-11-16 11:23:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321241713] [2022-11-16 11:23:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:18,322 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 [2022-11-16 11:23:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:18,323 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:18,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:18,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:23:18,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:18,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:18,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:18,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321241713] [2022-11-16 11:23:18,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321241713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:18,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:18,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:18,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822001164] [2022-11-16 11:23:18,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:18,559 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) [2022-11-16 11:23:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:19,254 INFO L93 Difference]: Finished difference Result 2548 states and 6245 transitions. [2022-11-16 11:23:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:19,255 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 [2022-11-16 11:23:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:19,259 INFO L225 Difference]: With dead ends: 2548 [2022-11-16 11:23:19,259 INFO L226 Difference]: Without dead ends: 2548 [2022-11-16 11:23:19,259 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 [2022-11-16 11:23:19,260 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 120 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-11-16 11:23:19,260 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] [2022-11-16 11:23:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-11-16 11:23:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1668. [2022-11-16 11:23:19,293 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) [2022-11-16 11:23:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 4076 transitions. [2022-11-16 11:23:19,297 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 4076 transitions. Word has length 19 [2022-11-16 11:23:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:19,297 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 4076 transitions. [2022-11-16 11:23:19,297 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) [2022-11-16 11:23:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 4076 transitions. [2022-11-16 11:23:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:23:19,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:19,301 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] [2022-11-16 11:23:19,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:19,513 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 797032099, now seen corresponding path program 1 times [2022-11-16 11:23:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:19,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810494357] [2022-11-16 11:23:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,514 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 [2022-11-16 11:23:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:19,515 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:19,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:19,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:23:19,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:19,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:19,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810494357] [2022-11-16 11:23:19,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810494357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:23:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019483324] [2022-11-16 11:23:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:23:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:23:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:23:19,729 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) [2022-11-16 11:23:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,087 INFO L93 Difference]: Finished difference Result 2600 states and 6185 transitions. [2022-11-16 11:23:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:20,088 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 [2022-11-16 11:23:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:20,091 INFO L225 Difference]: With dead ends: 2600 [2022-11-16 11:23:20,092 INFO L226 Difference]: Without dead ends: 2600 [2022-11-16 11:23:20,092 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 [2022-11-16 11:23:20,092 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 [2022-11-16 11:23:20,092 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] [2022-11-16 11:23:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-16 11:23:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1666. [2022-11-16 11:23:20,125 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) [2022-11-16 11:23:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4062 transitions. [2022-11-16 11:23:20,128 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4062 transitions. Word has length 22 [2022-11-16 11:23:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:20,129 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 4062 transitions. [2022-11-16 11:23:20,129 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) [2022-11-16 11:23:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4062 transitions. [2022-11-16 11:23:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:23:20,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:20,132 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] [2022-11-16 11:23:20,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:23:20,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:20,343 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-11-16 11:23:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash 681739119, now seen corresponding path program 2 times [2022-11-16 11:23:20,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:20,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800625449] [2022-11-16 11:23:20,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:20,345 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 [2022-11-16 11:23:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:20,346 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:20,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:20,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:23:20,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 11:23:20,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,627 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 11:23:20,628 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:23:20,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-11-16 11:23:20,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2022-11-16 11:23:20,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-11-16 11:23:20,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-11-16 11:23:20,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-11-16 11:23:20,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-11-16 11:23:20,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-11-16 11:23:20,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-11-16 11:23:20,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-11-16 11:23:20,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-11-16 11:23:20,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-11-16 11:23:20,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-11-16 11:23:20,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-11-16 11:23:20,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-11-16 11:23:20,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-11-16 11:23:20,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-11-16 11:23:20,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-11-16 11:23:20,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-11-16 11:23:20,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2022-11-16 11:23:20,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2022-11-16 11:23:20,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2022-11-16 11:23:20,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2022-11-16 11:23:20,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 24 remaining) [2022-11-16 11:23:20,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-11-16 11:23:20,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:20,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:20,850 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] [2022-11-16 11:23:20,856 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:23:20,856 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:23:20,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:23:20 BasicIcfg [2022-11-16 11:23:20,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:23:20,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:23:20,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:23:20,933 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:23:20,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:23" (3/4) ... [2022-11-16 11:23:20,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:23:20,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:23:20,937 INFO L158 Benchmark]: Toolchain (without parser) took 59242.40ms. Allocated memory was 83.9MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 66.8MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-16 11:23:20,938 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:20,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.99ms. Allocated memory is still 83.9MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:23:20,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.11ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 53.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:23:20,938 INFO L158 Benchmark]: Boogie Preprocessor took 61.55ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:20,938 INFO L158 Benchmark]: RCFGBuilder took 815.69ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 65.2MB in the end (delta: -13.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-11-16 11:23:20,939 INFO L158 Benchmark]: TraceAbstraction took 57651.83ms. Allocated memory was 83.9MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 64.4MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-16 11:23:20,939 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 5.6GB. Free memory is still 3.2GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:20,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.99ms. Allocated memory is still 83.9MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.11ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 53.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.55ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 51.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 815.69ms. Allocated memory is still 83.9MB. Free memory was 51.8MB in the beginning and 65.2MB in the end (delta: -13.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * TraceAbstraction took 57651.83ms. Allocated memory was 83.9MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 64.4MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 5.6GB. Free memory is still 3.2GB. 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: 14.4s, 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: 271, independent: 79, independent conditional: 0, independent unconditional: 79, dependent: 191, dependent conditional: 0, dependent unconditional: 191, 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: 57.3s, OverallIterations: 40, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1598 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1598 mSDsluCounter, 1084 SdHoareTripleChecker+Invalid, 6.8s 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: 7.4s AutomataMinimizationTime, 39 MinimizatonAttempts, 9478 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 9.5s 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 [2022-11-16 11:23:20,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa11ef7-ab24-43c5-a54f-cc8900d670a5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample