./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:39:08,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:39:08,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:39:08,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:39:08,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:39:08,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:39:08,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:39:08,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:39:08,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:39:08,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:39:08,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:39:08,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:39:08,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:39:08,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:39:08,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:39:08,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:39:08,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:39:08,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:39:08,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:39:08,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:39:08,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:39:08,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:39:08,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:39:08,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:39:08,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:39:08,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:39:08,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:39:08,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:39:08,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:39:08,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:39:08,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:39:08,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:39:08,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:39:08,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:39:08,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:39:08,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:39:08,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:39:08,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:39:08,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:39:08,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:39:08,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:39:08,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 02:39:08,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:39:08,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:39:08,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:39:08,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:39:08,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:39:08,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:39:08,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:39:08,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:39:08,676 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:39:08,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:39:08,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:39:08,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:39:08,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:39:08,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:39:08,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:39:08,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:39:08,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:39:08,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:39:08,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:39:08,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:39:08,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:39:08,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:39:08,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:39:08,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:39:08,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:39:08,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:39:08,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:39:08,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:39:08,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:39:08,685 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:39:08,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:39:08,686 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2022-11-23 02:39:09,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:39:09,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:39:09,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:39:09,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:39:09,064 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:39:09,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-11-23 02:39:12,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:39:13,261 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:39:13,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-11-23 02:39:13,315 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/data/5c1b6f7be/0b1beeae16de4c1c8963f823750a1979/FLAG97f2f932e [2022-11-23 02:39:13,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/data/5c1b6f7be/0b1beeae16de4c1c8963f823750a1979 [2022-11-23 02:39:13,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:39:13,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:39:13,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:39:13,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:39:13,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:39:13,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:13" (1/1) ... [2022-11-23 02:39:13,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b42ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:13, skipping insertion in model container [2022-11-23 02:39:13,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:13" (1/1) ... [2022-11-23 02:39:13,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:39:13,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:39:14,827 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-11-23 02:39:14,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:39:15,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:39:15,521 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-11-23 02:39:15,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:39:15,800 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:39:15,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15 WrapperNode [2022-11-23 02:39:15,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:39:15,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:39:15,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:39:15,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:39:15,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:15,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,340 INFO L138 Inliner]: procedures = 165, calls = 5858, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 7002 [2022-11-23 02:39:16,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:39:16,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:39:16,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:39:16,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:39:16,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:39:16,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:39:16,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:39:16,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:39:16,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (1/1) ... [2022-11-23 02:39:16,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:39:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:39:16,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:39:16,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:39:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-11-23 02:39:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-11-23 02:39:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 02:39:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 02:39:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-11-23 02:39:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-11-23 02:39:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 02:39:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 02:39:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-23 02:39:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-23 02:39:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2022-11-23 02:39:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2022-11-23 02:39:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-11-23 02:39:16,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-11-23 02:39:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 02:39:16,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 02:39:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:39:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 02:39:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 02:39:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-11-23 02:39:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-11-23 02:39:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 02:39:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 02:39:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:39:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 02:39:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 02:39:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 02:39:16,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 02:39:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2022-11-23 02:39:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2022-11-23 02:39:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-23 02:39:16,993 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-23 02:39:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-11-23 02:39:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-11-23 02:39:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 02:39:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 02:39:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-11-23 02:39:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-11-23 02:39:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 02:39:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 02:39:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 02:39:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 02:39:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-11-23 02:39:16,998 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-11-23 02:39:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:39:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-23 02:39:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-23 02:39:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 02:39:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 02:39:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:39:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:39:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:39:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-11-23 02:39:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-11-23 02:39:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:39:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 02:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 02:39:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:39:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 02:39:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-11-23 02:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-11-23 02:39:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-11-23 02:39:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 02:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 02:39:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 02:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 02:39:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:39:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-23 02:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-23 02:39:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:39:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-11-23 02:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-11-23 02:39:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 02:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 02:39:17,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:39:17,600 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:39:20,591 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 02:39:35,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:39:35,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:39:35,887 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:39:35,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:35 BoogieIcfgContainer [2022-11-23 02:39:35,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:39:35,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:39:35,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:39:35,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:39:35,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:39:13" (1/3) ... [2022-11-23 02:39:35,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5c0325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:35, skipping insertion in model container [2022-11-23 02:39:35,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:15" (2/3) ... [2022-11-23 02:39:35,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5c0325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:35, skipping insertion in model container [2022-11-23 02:39:35,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:35" (3/3) ... [2022-11-23 02:39:35,901 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-11-23 02:39:35,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:39:35,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:39:36,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:39:36,028 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@26bf6431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:39:36,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:39:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 558 states, 425 states have (on average 1.4376470588235295) internal successors, (611), 438 states have internal predecessors, (611), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-23 02:39:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 02:39:36,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:36,055 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] [2022-11-23 02:39:36,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash -583222788, now seen corresponding path program 1 times [2022-11-23 02:39:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492166515] [2022-11-23 02:39:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:39:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492166515] [2022-11-23 02:39:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492166515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:38,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:38,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:39:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403245712] [2022-11-23 02:39:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:38,265 INFO L87 Difference]: Start difference. First operand has 558 states, 425 states have (on average 1.4376470588235295) internal successors, (611), 438 states have internal predecessors, (611), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:39:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:39:39,020 INFO L93 Difference]: Finished difference Result 1557 states and 2280 transitions. [2022-11-23 02:39:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-23 02:39:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:39:39,070 INFO L225 Difference]: With dead ends: 1557 [2022-11-23 02:39:39,070 INFO L226 Difference]: Without dead ends: 985 [2022-11-23 02:39:39,082 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 [2022-11-23 02:39:39,093 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 615 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:39:39,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1638 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:39:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-11-23 02:39:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 971. [2022-11-23 02:39:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 738 states have (on average 1.4010840108401084) internal successors, (1034), 749 states have internal predecessors, (1034), 176 states have call successors, (176), 57 states have call predecessors, (176), 56 states have return successors, (171), 170 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-23 02:39:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1381 transitions. [2022-11-23 02:39:39,304 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1381 transitions. Word has length 22 [2022-11-23 02:39:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:39:39,305 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1381 transitions. [2022-11-23 02:39:39,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:39:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1381 transitions. [2022-11-23 02:39:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 02:39:39,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:39,316 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] [2022-11-23 02:39:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:39:39,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:39,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1979915478, now seen corresponding path program 1 times [2022-11-23 02:39:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:39,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565647880] [2022-11-23 02:39:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:39:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565647880] [2022-11-23 02:39:40,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565647880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:40,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:40,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:39:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381318835] [2022-11-23 02:39:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:40,868 INFO L87 Difference]: Start difference. First operand 971 states and 1381 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:39:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:39:41,434 INFO L93 Difference]: Finished difference Result 2748 states and 3913 transitions. [2022-11-23 02:39:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-23 02:39:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:39:41,454 INFO L225 Difference]: With dead ends: 2748 [2022-11-23 02:39:41,454 INFO L226 Difference]: Without dead ends: 1780 [2022-11-23 02:39:41,459 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 [2022-11-23 02:39:41,467 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 756 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:39:41,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 2026 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:39:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-11-23 02:39:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2022-11-23 02:39:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1340 states have (on average 1.4029850746268657) internal successors, (1880), 1356 states have internal predecessors, (1880), 323 states have call successors, (323), 108 states have call predecessors, (323), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2022-11-23 02:39:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2521 transitions. [2022-11-23 02:39:41,621 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2521 transitions. Word has length 21 [2022-11-23 02:39:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:39:41,621 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2521 transitions. [2022-11-23 02:39:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:39:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2521 transitions. [2022-11-23 02:39:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 02:39:41,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:41,628 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:41,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:39:41,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash 987012277, now seen corresponding path program 1 times [2022-11-23 02:39:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:41,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987465720] [2022-11-23 02:39:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:39:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:39:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:43,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987465720] [2022-11-23 02:39:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987465720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:43,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:43,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:39:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673967953] [2022-11-23 02:39:43,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:39:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:39:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:39:43,023 INFO L87 Difference]: Start difference. First operand 1771 states and 2521 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:39:44,641 INFO L93 Difference]: Finished difference Result 1855 states and 2666 transitions. [2022-11-23 02:39:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:39:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-23 02:39:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:39:44,660 INFO L225 Difference]: With dead ends: 1855 [2022-11-23 02:39:44,660 INFO L226 Difference]: Without dead ends: 1852 [2022-11-23 02:39:44,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:39:44,670 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 810 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:39:44,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1133 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 02:39:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-11-23 02:39:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1770. [2022-11-23 02:39:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1340 states have (on average 1.4022388059701492) internal successors, (1879), 1355 states have internal predecessors, (1879), 322 states have call successors, (322), 108 states have call predecessors, (322), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2022-11-23 02:39:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2519 transitions. [2022-11-23 02:39:44,850 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2519 transitions. Word has length 30 [2022-11-23 02:39:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:39:44,853 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2519 transitions. [2022-11-23 02:39:44,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2519 transitions. [2022-11-23 02:39:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 02:39:44,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:44,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:44,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:39:44,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 532538279, now seen corresponding path program 1 times [2022-11-23 02:39:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:44,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660968054] [2022-11-23 02:39:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:39:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:39:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:46,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660968054] [2022-11-23 02:39:46,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660968054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:46,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:46,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:39:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020083524] [2022-11-23 02:39:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:39:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:39:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:39:46,156 INFO L87 Difference]: Start difference. First operand 1770 states and 2519 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:39:47,672 INFO L93 Difference]: Finished difference Result 1854 states and 2664 transitions. [2022-11-23 02:39:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:39:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-23 02:39:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:39:47,688 INFO L225 Difference]: With dead ends: 1854 [2022-11-23 02:39:47,688 INFO L226 Difference]: Without dead ends: 1851 [2022-11-23 02:39:47,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:39:47,691 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 807 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:39:47,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1130 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 02:39:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-11-23 02:39:47,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1769. [2022-11-23 02:39:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1340 states have (on average 1.4014925373134328) internal successors, (1878), 1354 states have internal predecessors, (1878), 321 states have call successors, (321), 108 states have call predecessors, (321), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2022-11-23 02:39:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2517 transitions. [2022-11-23 02:39:47,885 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2517 transitions. Word has length 31 [2022-11-23 02:39:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:39:47,886 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2517 transitions. [2022-11-23 02:39:47,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2517 transitions. [2022-11-23 02:39:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 02:39:47,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:47,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:47,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:39:47,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash -671248904, now seen corresponding path program 1 times [2022-11-23 02:39:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:47,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272432950] [2022-11-23 02:39:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:47,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:39:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:39:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:49,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272432950] [2022-11-23 02:39:49,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272432950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:49,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:49,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:39:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028580938] [2022-11-23 02:39:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:49,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:39:49,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:39:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:39:49,032 INFO L87 Difference]: Start difference. First operand 1769 states and 2517 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:39:51,116 INFO L93 Difference]: Finished difference Result 5019 states and 7197 transitions. [2022-11-23 02:39:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:39:51,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-23 02:39:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:39:51,141 INFO L225 Difference]: With dead ends: 5019 [2022-11-23 02:39:51,141 INFO L226 Difference]: Without dead ends: 3241 [2022-11-23 02:39:51,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:39:51,152 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 824 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:39:51,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1738 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 02:39:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2022-11-23 02:39:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 3138. [2022-11-23 02:39:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 2375 states have (on average 1.3974736842105264) internal successors, (3319), 2412 states have internal predecessors, (3319), 581 states have call successors, (581), 195 states have call predecessors, (581), 181 states have return successors, (575), 554 states have call predecessors, (575), 571 states have call successors, (575) [2022-11-23 02:39:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4475 transitions. [2022-11-23 02:39:51,388 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4475 transitions. Word has length 32 [2022-11-23 02:39:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:39:51,389 INFO L495 AbstractCegarLoop]: Abstraction has 3138 states and 4475 transitions. [2022-11-23 02:39:51,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:39:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4475 transitions. [2022-11-23 02:39:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 02:39:51,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:39:51,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:39:51,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:39:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -131328040, now seen corresponding path program 1 times [2022-11-23 02:39:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814651778] [2022-11-23 02:39:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:39:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:39:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:39:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:39:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:39:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 02:39:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814651778] [2022-11-23 02:39:54,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814651778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:54,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:54,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:39:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388744864] [2022-11-23 02:39:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:39:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:39:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:39:54,500 INFO L87 Difference]: Start difference. First operand 3138 states and 4475 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:39:58,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:03,309 INFO L93 Difference]: Finished difference Result 7858 states and 11247 transitions. [2022-11-23 02:40:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:40:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-23 02:40:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:03,345 INFO L225 Difference]: With dead ends: 7858 [2022-11-23 02:40:03,346 INFO L226 Difference]: Without dead ends: 4717 [2022-11-23 02:40:03,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:40:03,362 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 1073 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 416 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:03,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 4575 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1641 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-23 02:40:03,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2022-11-23 02:40:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 3960. [2022-11-23 02:40:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 2979 states have (on average 1.3826787512588117) internal successors, (4119), 3026 states have internal predecessors, (4119), 738 states have call successors, (738), 256 states have call predecessors, (738), 242 states have return successors, (732), 707 states have call predecessors, (732), 728 states have call successors, (732) [2022-11-23 02:40:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5589 transitions. [2022-11-23 02:40:03,657 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5589 transitions. Word has length 63 [2022-11-23 02:40:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:03,657 INFO L495 AbstractCegarLoop]: Abstraction has 3960 states and 5589 transitions. [2022-11-23 02:40:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:40:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5589 transitions. [2022-11-23 02:40:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 02:40:03,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:03,665 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-11-23 02:40:03,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:40:03,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2094952206, now seen corresponding path program 1 times [2022-11-23 02:40:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:03,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846951552] [2022-11-23 02:40:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 02:40:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 02:40:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:40:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:40:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 02:40:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:40:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:40:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:05,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846951552] [2022-11-23 02:40:05,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846951552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:05,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:40:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807134502] [2022-11-23 02:40:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:40:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:40:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:40:05,124 INFO L87 Difference]: Start difference. First operand 3960 states and 5589 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 02:40:09,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:11,380 INFO L93 Difference]: Finished difference Result 8919 states and 12566 transitions. [2022-11-23 02:40:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:40:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-11-23 02:40:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:11,413 INFO L225 Difference]: With dead ends: 8919 [2022-11-23 02:40:11,413 INFO L226 Difference]: Without dead ends: 4962 [2022-11-23 02:40:11,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:40:11,430 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 778 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:11,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2473 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1424 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 02:40:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-11-23 02:40:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4545. [2022-11-23 02:40:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 3476 states have (on average 1.3955696202531647) internal successors, (4851), 3539 states have internal predecessors, (4851), 769 states have call successors, (769), 315 states have call predecessors, (769), 299 states have return successors, (761), 714 states have call predecessors, (761), 753 states have call successors, (761) [2022-11-23 02:40:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 6381 transitions. [2022-11-23 02:40:11,871 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 6381 transitions. Word has length 85 [2022-11-23 02:40:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 4545 states and 6381 transitions. [2022-11-23 02:40:11,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 02:40:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 6381 transitions. [2022-11-23 02:40:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 02:40:11,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:11,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:11,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:40:11,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1071040113, now seen corresponding path program 1 times [2022-11-23 02:40:11,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:11,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319345589] [2022-11-23 02:40:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:40:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:40:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 02:40:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 02:40:13,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:13,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319345589] [2022-11-23 02:40:13,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319345589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:13,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:13,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:40:13,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338023185] [2022-11-23 02:40:13,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:13,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:40:13,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:40:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:40:13,411 INFO L87 Difference]: Start difference. First operand 4545 states and 6381 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:40:17,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:22,817 INFO L93 Difference]: Finished difference Result 9725 states and 13737 transitions. [2022-11-23 02:40:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:40:22,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-11-23 02:40:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:22,851 INFO L225 Difference]: With dead ends: 9725 [2022-11-23 02:40:22,851 INFO L226 Difference]: Without dead ends: 5142 [2022-11-23 02:40:22,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:40:22,867 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 1137 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 461 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 5449 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:22,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 5449 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2083 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 02:40:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2022-11-23 02:40:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 4465. [2022-11-23 02:40:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 3414 states have (on average 1.398066783831283) internal successors, (4773), 3477 states have internal predecessors, (4773), 760 states have call successors, (760), 306 states have call predecessors, (760), 290 states have return successors, (752), 705 states have call predecessors, (752), 744 states have call successors, (752) [2022-11-23 02:40:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6285 transitions. [2022-11-23 02:40:23,218 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6285 transitions. Word has length 87 [2022-11-23 02:40:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:23,219 INFO L495 AbstractCegarLoop]: Abstraction has 4465 states and 6285 transitions. [2022-11-23 02:40:23,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:40:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6285 transitions. [2022-11-23 02:40:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 02:40:23,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:23,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:40:23,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 279672553, now seen corresponding path program 1 times [2022-11-23 02:40:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858859680] [2022-11-23 02:40:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:40:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:40:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:40:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 02:40:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:40:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858859680] [2022-11-23 02:40:24,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858859680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:24,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:24,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:40:24,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362855328] [2022-11-23 02:40:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:24,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:40:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:40:24,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:40:24,521 INFO L87 Difference]: Start difference. First operand 4465 states and 6285 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 02:40:28,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:31,848 INFO L93 Difference]: Finished difference Result 11949 states and 17066 transitions. [2022-11-23 02:40:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:40:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 98 [2022-11-23 02:40:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:31,924 INFO L225 Difference]: With dead ends: 11949 [2022-11-23 02:40:31,924 INFO L226 Difference]: Without dead ends: 7502 [2022-11-23 02:40:31,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:40:31,944 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1288 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 728 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 2485 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 02:40:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2022-11-23 02:40:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 6603. [2022-11-23 02:40:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6603 states, 5088 states have (on average 1.3863993710691824) internal successors, (7054), 5171 states have internal predecessors, (7054), 1092 states have call successors, (1092), 440 states have call predecessors, (1092), 422 states have return successors, (1088), 1027 states have call predecessors, (1088), 1076 states have call successors, (1088) [2022-11-23 02:40:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 9234 transitions. [2022-11-23 02:40:32,466 INFO L78 Accepts]: Start accepts. Automaton has 6603 states and 9234 transitions. Word has length 98 [2022-11-23 02:40:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 6603 states and 9234 transitions. [2022-11-23 02:40:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 02:40:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6603 states and 9234 transitions. [2022-11-23 02:40:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-23 02:40:32,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:32,473 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:32,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:40:32,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash 529536300, now seen corresponding path program 1 times [2022-11-23 02:40:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:32,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268991811] [2022-11-23 02:40:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:32,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:40:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:40:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:40:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:40:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 02:40:33,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:33,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268991811] [2022-11-23 02:40:33,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268991811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:33,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:33,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:40:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795037442] [2022-11-23 02:40:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:40:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:40:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:40:33,654 INFO L87 Difference]: Start difference. First operand 6603 states and 9234 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 02:40:37,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:40,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:43,148 INFO L93 Difference]: Finished difference Result 16527 states and 23430 transitions. [2022-11-23 02:40:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:40:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 119 [2022-11-23 02:40:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:43,202 INFO L225 Difference]: With dead ends: 16527 [2022-11-23 02:40:43,202 INFO L226 Difference]: Without dead ends: 9942 [2022-11-23 02:40:43,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:40:43,229 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 1097 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 548 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 3232 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1203 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 02:40:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2022-11-23 02:40:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 8745. [2022-11-23 02:40:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8745 states, 6767 states have (on average 1.3802275749963056) internal successors, (9340), 6867 states have internal predecessors, (9340), 1420 states have call successors, (1420), 576 states have call predecessors, (1420), 557 states have return successors, (1423), 1349 states have call predecessors, (1423), 1407 states have call successors, (1423) [2022-11-23 02:40:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 12183 transitions. [2022-11-23 02:40:43,901 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 12183 transitions. Word has length 119 [2022-11-23 02:40:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:43,902 INFO L495 AbstractCegarLoop]: Abstraction has 8745 states and 12183 transitions. [2022-11-23 02:40:43,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 02:40:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 12183 transitions. [2022-11-23 02:40:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-23 02:40:43,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:43,909 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:40:43,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1401320173, now seen corresponding path program 1 times [2022-11-23 02:40:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055298640] [2022-11-23 02:40:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:40:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:40:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:40:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 02:40:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 02:40:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:40:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 02:40:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 02:40:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-23 02:40:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:40:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055298640] [2022-11-23 02:40:45,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055298640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:45,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:45,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:40:45,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475671242] [2022-11-23 02:40:45,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:40:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:40:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:40:45,449 INFO L87 Difference]: Start difference. First operand 8745 states and 12183 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:40:50,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:52,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:40:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:40:55,608 INFO L93 Difference]: Finished difference Result 13753 states and 19221 transitions. [2022-11-23 02:40:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:40:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-11-23 02:40:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:40:55,630 INFO L225 Difference]: With dead ends: 13753 [2022-11-23 02:40:55,631 INFO L226 Difference]: Without dead ends: 5026 [2022-11-23 02:40:55,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:40:55,657 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1477 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 687 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:40:55,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 2100 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 1666 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 02:40:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5026 states. [2022-11-23 02:40:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5026 to 3639. [2022-11-23 02:40:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 2840 states have (on average 1.403169014084507) internal successors, (3985), 2882 states have internal predecessors, (3985), 590 states have call successors, (590), 219 states have call predecessors, (590), 208 states have return successors, (588), 561 states have call predecessors, (588), 580 states have call successors, (588) [2022-11-23 02:40:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5163 transitions. [2022-11-23 02:40:56,008 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5163 transitions. Word has length 143 [2022-11-23 02:40:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:40:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 3639 states and 5163 transitions. [2022-11-23 02:40:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 02:40:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5163 transitions. [2022-11-23 02:40:56,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 02:40:56,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:40:56,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:56,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:40:56,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:40:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash -776984921, now seen corresponding path program 1 times [2022-11-23 02:40:56,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:56,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548540436] [2022-11-23 02:40:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:56,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:40:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:40:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:40:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:40:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:40:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:40:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:40:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:40:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:40:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 02:40:57,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548540436] [2022-11-23 02:40:57,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548540436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:57,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:57,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:40:57,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758697924] [2022-11-23 02:40:57,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:40:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:40:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:40:57,061 INFO L87 Difference]: Start difference. First operand 3639 states and 5163 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:01,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:04,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:41:08,925 INFO L93 Difference]: Finished difference Result 9037 states and 12958 transitions. [2022-11-23 02:41:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:41:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 151 [2022-11-23 02:41:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:41:08,945 INFO L225 Difference]: With dead ends: 9037 [2022-11-23 02:41:08,946 INFO L226 Difference]: Without dead ends: 5416 [2022-11-23 02:41:08,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:41:08,956 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1331 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 862 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:41:08,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 2857 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 2321 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-23 02:41:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2022-11-23 02:41:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4448. [2022-11-23 02:41:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3486 states have (on average 1.402180149168101) internal successors, (4888), 3535 states have internal predecessors, (4888), 713 states have call successors, (713), 260 states have call predecessors, (713), 248 states have return successors, (713), 682 states have call predecessors, (713), 703 states have call successors, (713) [2022-11-23 02:41:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6314 transitions. [2022-11-23 02:41:09,275 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6314 transitions. Word has length 151 [2022-11-23 02:41:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:41:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 6314 transitions. [2022-11-23 02:41:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6314 transitions. [2022-11-23 02:41:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 02:41:09,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:41:09,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:41:09,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:41:09,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:41:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:41:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1229299168, now seen corresponding path program 1 times [2022-11-23 02:41:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:41:09,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228455910] [2022-11-23 02:41:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:41:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:41:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:41:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:41:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:41:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:41:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:41:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:41:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:41:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:41:11,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:41:11,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228455910] [2022-11-23 02:41:11,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228455910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:41:11,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:41:11,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:41:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693573196] [2022-11-23 02:41:11,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:41:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:41:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:41:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:41:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:41:11,649 INFO L87 Difference]: Start difference. First operand 4448 states and 6314 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:17,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:19,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:22,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:41:26,837 INFO L93 Difference]: Finished difference Result 11760 states and 16985 transitions. [2022-11-23 02:41:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 02:41:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 151 [2022-11-23 02:41:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:41:26,876 INFO L225 Difference]: With dead ends: 11760 [2022-11-23 02:41:26,877 INFO L226 Difference]: Without dead ends: 7330 [2022-11-23 02:41:26,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:41:26,893 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2558 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 959 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:41:26,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 3771 Invalid, 4123 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [959 Valid, 3161 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-11-23 02:41:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7330 states. [2022-11-23 02:41:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7330 to 5286. [2022-11-23 02:41:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 4149 states have (on average 1.4193781634128706) internal successors, (5889), 4205 states have internal predecessors, (5889), 843 states have call successors, (843), 307 states have call predecessors, (843), 293 states have return successors, (845), 809 states have call predecessors, (845), 833 states have call successors, (845) [2022-11-23 02:41:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7577 transitions. [2022-11-23 02:41:27,463 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7577 transitions. Word has length 151 [2022-11-23 02:41:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:41:27,463 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 7577 transitions. [2022-11-23 02:41:27,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7577 transitions. [2022-11-23 02:41:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-23 02:41:27,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:41:27,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:41:27,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:41:27,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:41:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:41:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1968571598, now seen corresponding path program 1 times [2022-11-23 02:41:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:41:27,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641850381] [2022-11-23 02:41:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:41:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:41:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:41:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:41:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:41:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:41:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:41:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:41:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-23 02:41:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 02:41:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:41:28,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641850381] [2022-11-23 02:41:28,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641850381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:41:28,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:41:28,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:41:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393854689] [2022-11-23 02:41:28,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:41:28,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:41:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:41:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:41:28,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:41:28,548 INFO L87 Difference]: Start difference. First operand 5286 states and 7577 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:33,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:35,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:38,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:40,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:41:45,823 INFO L93 Difference]: Finished difference Result 12585 states and 18190 transitions. [2022-11-23 02:41:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:41:45,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 150 [2022-11-23 02:41:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:41:45,871 INFO L225 Difference]: With dead ends: 12585 [2022-11-23 02:41:45,872 INFO L226 Difference]: Without dead ends: 7317 [2022-11-23 02:41:45,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:41:45,892 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1129 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 587 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:41:45,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 3295 Invalid, 3469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [587 Valid, 2878 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2022-11-23 02:41:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2022-11-23 02:41:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 6095. [2022-11-23 02:41:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 4795 states have (on average 1.4164754953076122) internal successors, (6792), 4858 states have internal predecessors, (6792), 966 states have call successors, (966), 348 states have call predecessors, (966), 333 states have return successors, (970), 930 states have call predecessors, (970), 956 states have call successors, (970) [2022-11-23 02:41:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 8728 transitions. [2022-11-23 02:41:46,395 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 8728 transitions. Word has length 150 [2022-11-23 02:41:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:41:46,396 INFO L495 AbstractCegarLoop]: Abstraction has 6095 states and 8728 transitions. [2022-11-23 02:41:46,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 8728 transitions. [2022-11-23 02:41:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 02:41:46,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:41:46,403 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:41:46,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:41:46,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:41:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:41:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1388900993, now seen corresponding path program 1 times [2022-11-23 02:41:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:41:46,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508487528] [2022-11-23 02:41:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:41:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:41:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:41:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:41:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:41:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:41:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:41:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:41:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:41:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:41:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 02:41:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:41:47,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:41:47,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508487528] [2022-11-23 02:41:47,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508487528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:41:47,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:41:47,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:41:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721564429] [2022-11-23 02:41:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:41:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:41:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:41:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:41:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:41:47,641 INFO L87 Difference]: Start difference. First operand 6095 states and 8728 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:41:52,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:54,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:41:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:41:59,502 INFO L93 Difference]: Finished difference Result 14330 states and 20696 transitions. [2022-11-23 02:41:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:41:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 152 [2022-11-23 02:41:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:41:59,546 INFO L225 Difference]: With dead ends: 14330 [2022-11-23 02:41:59,547 INFO L226 Difference]: Without dead ends: 8253 [2022-11-23 02:41:59,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:41:59,567 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1212 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 720 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:41:59,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 2877 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2366 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2022-11-23 02:41:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2022-11-23 02:42:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 6904. [2022-11-23 02:42:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5441 states have (on average 1.414262084175703) internal successors, (7695), 5511 states have internal predecessors, (7695), 1089 states have call successors, (1089), 389 states have call predecessors, (1089), 373 states have return successors, (1095), 1051 states have call predecessors, (1095), 1079 states have call successors, (1095) [2022-11-23 02:42:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9879 transitions. [2022-11-23 02:42:00,172 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9879 transitions. Word has length 152 [2022-11-23 02:42:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:00,173 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9879 transitions. [2022-11-23 02:42:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9879 transitions. [2022-11-23 02:42:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-23 02:42:00,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:00,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-11-23 02:42:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:42:00,180 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2030284861, now seen corresponding path program 1 times [2022-11-23 02:42:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:00,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833834856] [2022-11-23 02:42:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:42:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:42:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 02:42:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 02:42:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:01,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833834856] [2022-11-23 02:42:01,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833834856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:01,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:01,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:42:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466298182] [2022-11-23 02:42:01,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:01,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:42:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:42:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:01,597 INFO L87 Difference]: Start difference. First operand 6904 states and 9879 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:05,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:07,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:11,709 INFO L93 Difference]: Finished difference Result 14826 states and 21393 transitions. [2022-11-23 02:42:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:42:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 152 [2022-11-23 02:42:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:11,748 INFO L225 Difference]: With dead ends: 14826 [2022-11-23 02:42:11,748 INFO L226 Difference]: Without dead ends: 7940 [2022-11-23 02:42:11,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:42:11,770 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1198 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 513 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:11,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2591 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2037 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2022-11-23 02:42:11,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2022-11-23 02:42:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 6904. [2022-11-23 02:42:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5441 states have (on average 1.4138945046866385) internal successors, (7693), 5511 states have internal predecessors, (7693), 1089 states have call successors, (1089), 389 states have call predecessors, (1089), 373 states have return successors, (1095), 1051 states have call predecessors, (1095), 1079 states have call successors, (1095) [2022-11-23 02:42:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9877 transitions. [2022-11-23 02:42:12,500 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9877 transitions. Word has length 152 [2022-11-23 02:42:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:12,501 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9877 transitions. [2022-11-23 02:42:12,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9877 transitions. [2022-11-23 02:42:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 02:42:12,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:12,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-11-23 02:42:12,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:42:12,508 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash 326135162, now seen corresponding path program 1 times [2022-11-23 02:42:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792685273] [2022-11-23 02:42:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:42:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:42:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-23 02:42:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 02:42:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792685273] [2022-11-23 02:42:13,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792685273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:13,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:13,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:42:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026037487] [2022-11-23 02:42:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:13,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:42:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:42:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:13,888 INFO L87 Difference]: Start difference. First operand 6904 states and 9877 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:18,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:22,149 INFO L93 Difference]: Finished difference Result 14826 states and 21389 transitions. [2022-11-23 02:42:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:42:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 154 [2022-11-23 02:42:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:22,173 INFO L225 Difference]: With dead ends: 14826 [2022-11-23 02:42:22,173 INFO L226 Difference]: Without dead ends: 7940 [2022-11-23 02:42:22,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:42:22,191 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1195 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 522 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:22,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 2583 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2034 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 02:42:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2022-11-23 02:42:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 6904. [2022-11-23 02:42:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5441 states have (on average 1.413526925197574) internal successors, (7691), 5511 states have internal predecessors, (7691), 1089 states have call successors, (1089), 389 states have call predecessors, (1089), 373 states have return successors, (1095), 1051 states have call predecessors, (1095), 1079 states have call successors, (1095) [2022-11-23 02:42:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9875 transitions. [2022-11-23 02:42:22,713 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9875 transitions. Word has length 154 [2022-11-23 02:42:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:22,714 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9875 transitions. [2022-11-23 02:42:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9875 transitions. [2022-11-23 02:42:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 02:42:22,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:22,720 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-11-23 02:42:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:42:22,721 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -747987786, now seen corresponding path program 1 times [2022-11-23 02:42:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560034591] [2022-11-23 02:42:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:42:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:42:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-23 02:42:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:42:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560034591] [2022-11-23 02:42:24,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560034591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:24,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:24,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:42:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220365116] [2022-11-23 02:42:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:42:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:42:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:24,297 INFO L87 Difference]: Start difference. First operand 6904 states and 9875 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:28,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:32,117 INFO L93 Difference]: Finished difference Result 14826 states and 21385 transitions. [2022-11-23 02:42:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:42:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 154 [2022-11-23 02:42:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:32,150 INFO L225 Difference]: With dead ends: 14826 [2022-11-23 02:42:32,150 INFO L226 Difference]: Without dead ends: 7940 [2022-11-23 02:42:32,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:42:32,166 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1410 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 775 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:32,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2253 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 1750 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 02:42:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2022-11-23 02:42:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 6904. [2022-11-23 02:42:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 5441 states have (on average 1.4131593457085094) internal successors, (7689), 5511 states have internal predecessors, (7689), 1089 states have call successors, (1089), 389 states have call predecessors, (1089), 373 states have return successors, (1095), 1051 states have call predecessors, (1095), 1079 states have call successors, (1095) [2022-11-23 02:42:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9873 transitions. [2022-11-23 02:42:32,718 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9873 transitions. Word has length 154 [2022-11-23 02:42:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:32,719 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9873 transitions. [2022-11-23 02:42:32,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:42:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9873 transitions. [2022-11-23 02:42:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 02:42:32,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:32,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:32,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:42:32,726 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash -749954129, now seen corresponding path program 1 times [2022-11-23 02:42:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956288075] [2022-11-23 02:42:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:42:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:42:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-23 02:42:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:42:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:34,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956288075] [2022-11-23 02:42:34,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956288075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:34,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696298791] [2022-11-23 02:42:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:34,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:34,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:34,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:42:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 13835 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:42:37,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:42:37,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:42:37,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696298791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:37,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:42:37,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-23 02:42:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897390534] [2022-11-23 02:42:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:37,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:37,834 INFO L87 Difference]: Start difference. First operand 6904 states and 9873 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 02:42:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:40,468 INFO L93 Difference]: Finished difference Result 20675 states and 29571 transitions. [2022-11-23 02:42:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:42:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 151 [2022-11-23 02:42:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:40,533 INFO L225 Difference]: With dead ends: 20675 [2022-11-23 02:42:40,533 INFO L226 Difference]: Without dead ends: 20660 [2022-11-23 02:42:40,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:40,545 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1536 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:40,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 2850 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:42:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20660 states. [2022-11-23 02:42:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20660 to 20590. [2022-11-23 02:42:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20590 states, 16229 states have (on average 1.4139503358185963) internal successors, (22947), 16431 states have internal predecessors, (22947), 3247 states have call successors, (3247), 1155 states have call predecessors, (3247), 1113 states have return successors, (3279), 3147 states have call predecessors, (3279), 3231 states have call successors, (3279) [2022-11-23 02:42:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20590 states to 20590 states and 29473 transitions. [2022-11-23 02:42:42,350 INFO L78 Accepts]: Start accepts. Automaton has 20590 states and 29473 transitions. Word has length 151 [2022-11-23 02:42:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:42,351 INFO L495 AbstractCegarLoop]: Abstraction has 20590 states and 29473 transitions. [2022-11-23 02:42:42,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 02:42:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 20590 states and 29473 transitions. [2022-11-23 02:42:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 02:42:42,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:42,361 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:42,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:42,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:42,587 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1999531822, now seen corresponding path program 1 times [2022-11-23 02:42:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:42,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246990635] [2022-11-23 02:42:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:42:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 02:42:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:42:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:42:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 02:42:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:42:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-23 02:42:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 02:42:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246990635] [2022-11-23 02:42:43,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246990635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:43,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:43,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:42:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800006309] [2022-11-23 02:42:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:42:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:42:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:42:43,719 INFO L87 Difference]: Start difference. First operand 20590 states and 29473 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-23 02:42:48,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:50,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:42:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:54,509 INFO L93 Difference]: Finished difference Result 44294 states and 64041 transitions. [2022-11-23 02:42:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:42:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 160 [2022-11-23 02:42:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:54,634 INFO L225 Difference]: With dead ends: 44294 [2022-11-23 02:42:54,634 INFO L226 Difference]: Without dead ends: 23722 [2022-11-23 02:42:54,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:42:54,670 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 637 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 409 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:54,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2191 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1577 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-23 02:42:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23722 states. [2022-11-23 02:42:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23722 to 20614. [2022-11-23 02:42:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20614 states, 16253 states have (on average 1.4133390758629176) internal successors, (22971), 16455 states have internal predecessors, (22971), 3247 states have call successors, (3247), 1155 states have call predecessors, (3247), 1113 states have return successors, (3279), 3147 states have call predecessors, (3279), 3231 states have call successors, (3279) [2022-11-23 02:42:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20614 states to 20614 states and 29497 transitions. [2022-11-23 02:42:56,452 INFO L78 Accepts]: Start accepts. Automaton has 20614 states and 29497 transitions. Word has length 160 [2022-11-23 02:42:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:56,453 INFO L495 AbstractCegarLoop]: Abstraction has 20614 states and 29497 transitions. [2022-11-23 02:42:56,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-23 02:42:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 20614 states and 29497 transitions. [2022-11-23 02:42:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 02:42:56,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:56,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:56,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 02:42:56,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1486088848, now seen corresponding path program 1 times [2022-11-23 02:42:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:56,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845553843] [2022-11-23 02:42:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:56,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:42:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:42:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:42:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:42:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 02:42:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:42:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:42:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:42:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 02:42:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:42:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-23 02:42:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 02:42:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:58,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845553843] [2022-11-23 02:42:58,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845553843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:58,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:58,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:42:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138703464] [2022-11-23 02:42:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:42:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:42:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:42:58,333 INFO L87 Difference]: Start difference. First operand 20614 states and 29497 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 02:43:04,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:06,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:43:12,773 INFO L93 Difference]: Finished difference Result 44320 states and 63898 transitions. [2022-11-23 02:43:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:43:12,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2022-11-23 02:43:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:43:12,888 INFO L225 Difference]: With dead ends: 44320 [2022-11-23 02:43:12,888 INFO L226 Difference]: Without dead ends: 23724 [2022-11-23 02:43:12,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:43:12,943 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 1118 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 566 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:43:12,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 3070 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2533 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-23 02:43:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23724 states. [2022-11-23 02:43:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23724 to 20244. [2022-11-23 02:43:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20244 states, 15993 states have (on average 1.4134934033639717) internal successors, (22606), 16191 states have internal predecessors, (22606), 3163 states have call successors, (3163), 1125 states have call predecessors, (3163), 1087 states have return successors, (3109), 3071 states have call predecessors, (3109), 3109 states have call successors, (3109) [2022-11-23 02:43:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20244 states to 20244 states and 28878 transitions. [2022-11-23 02:43:14,797 INFO L78 Accepts]: Start accepts. Automaton has 20244 states and 28878 transitions. Word has length 160 [2022-11-23 02:43:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:14,798 INFO L495 AbstractCegarLoop]: Abstraction has 20244 states and 28878 transitions. [2022-11-23 02:43:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 02:43:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 20244 states and 28878 transitions. [2022-11-23 02:43:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 02:43:14,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:14,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 02:43:14,810 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -825193105, now seen corresponding path program 1 times [2022-11-23 02:43:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:14,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128756875] [2022-11-23 02:43:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:43:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:43:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:43:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:43:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:43:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:43:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 02:43:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:43:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:17,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128756875] [2022-11-23 02:43:17,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128756875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:17,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112972044] [2022-11-23 02:43:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:17,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:17,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:17,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:43:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:20,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 13944 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:43:20,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:43:20,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:43:20,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112972044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:20,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:43:20,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-23 02:43:20,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006005154] [2022-11-23 02:43:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:43:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:43:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:43:20,254 INFO L87 Difference]: Start difference. First operand 20244 states and 28878 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 02:43:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:43:22,285 INFO L93 Difference]: Finished difference Result 39723 states and 56834 transitions. [2022-11-23 02:43:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:43:22,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 159 [2022-11-23 02:43:22,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:43:22,365 INFO L225 Difference]: With dead ends: 39723 [2022-11-23 02:43:22,365 INFO L226 Difference]: Without dead ends: 18405 [2022-11-23 02:43:22,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:43:22,424 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 613 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:43:22,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 958 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:43:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18405 states. [2022-11-23 02:43:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18405 to 18277. [2022-11-23 02:43:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18277 states, 14512 states have (on average 1.4098676957001102) internal successors, (20460), 14695 states have internal predecessors, (20460), 2833 states have call successors, (2833), 969 states have call predecessors, (2833), 931 states have return successors, (2779), 2747 states have call predecessors, (2779), 2779 states have call successors, (2779) [2022-11-23 02:43:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18277 states to 18277 states and 26072 transitions. [2022-11-23 02:43:23,992 INFO L78 Accepts]: Start accepts. Automaton has 18277 states and 26072 transitions. Word has length 159 [2022-11-23 02:43:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:23,993 INFO L495 AbstractCegarLoop]: Abstraction has 18277 states and 26072 transitions. [2022-11-23 02:43:23,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 02:43:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18277 states and 26072 transitions. [2022-11-23 02:43:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-23 02:43:23,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:24,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:24,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:43:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 02:43:24,202 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1679853625, now seen corresponding path program 1 times [2022-11-23 02:43:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:24,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285614528] [2022-11-23 02:43:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:24,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:43:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:43:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:43:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:43:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:43:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:43:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-23 02:43:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 02:43:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:25,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285614528] [2022-11-23 02:43:25,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285614528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:25,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:25,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:43:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745274773] [2022-11-23 02:43:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:25,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:43:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:43:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:43:25,242 INFO L87 Difference]: Start difference. First operand 18277 states and 26072 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:43:29,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:33,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:43:38,775 INFO L93 Difference]: Finished difference Result 42248 states and 60982 transitions. [2022-11-23 02:43:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:43:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 168 [2022-11-23 02:43:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:43:38,871 INFO L225 Difference]: With dead ends: 42248 [2022-11-23 02:43:38,871 INFO L226 Difference]: Without dead ends: 24124 [2022-11-23 02:43:38,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:43:38,928 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1217 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 841 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:43:38,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2470 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 2283 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-23 02:43:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24124 states. [2022-11-23 02:43:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24124 to 20665. [2022-11-23 02:43:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20665 states, 16423 states have (on average 1.4068075260305668) internal successors, (23104), 16627 states have internal predecessors, (23104), 3193 states have call successors, (3193), 1089 states have call predecessors, (3193), 1048 states have return successors, (3136), 3101 states have call predecessors, (3136), 3136 states have call successors, (3136) [2022-11-23 02:43:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 29433 transitions. [2022-11-23 02:43:41,122 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 29433 transitions. Word has length 168 [2022-11-23 02:43:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:41,123 INFO L495 AbstractCegarLoop]: Abstraction has 20665 states and 29433 transitions. [2022-11-23 02:43:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:43:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 29433 transitions. [2022-11-23 02:43:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 02:43:41,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:41,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 02:43:41,135 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1929660771, now seen corresponding path program 1 times [2022-11-23 02:43:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:41,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956811408] [2022-11-23 02:43:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:43:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:43:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:43:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:43:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:43:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:43:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-23 02:43:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-23 02:43:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956811408] [2022-11-23 02:43:42,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956811408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:42,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:42,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:43:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776092261] [2022-11-23 02:43:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:42,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:43:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:43:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:43:42,419 INFO L87 Difference]: Start difference. First operand 20665 states and 29433 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:43:47,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:50,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:43:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:43:55,869 INFO L93 Difference]: Finished difference Result 47435 states and 68352 transitions. [2022-11-23 02:43:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:43:55,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 173 [2022-11-23 02:43:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:43:55,960 INFO L225 Difference]: With dead ends: 47435 [2022-11-23 02:43:55,960 INFO L226 Difference]: Without dead ends: 26923 [2022-11-23 02:43:55,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:43:55,995 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1236 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 845 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:43:55,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 2470 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 2235 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-11-23 02:43:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26923 states. [2022-11-23 02:43:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26923 to 23053. [2022-11-23 02:43:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23053 states, 18334 states have (on average 1.404385295080179) internal successors, (25748), 18559 states have internal predecessors, (25748), 3553 states have call successors, (3553), 1209 states have call predecessors, (3553), 1165 states have return successors, (3493), 3455 states have call predecessors, (3493), 3493 states have call successors, (3493) [2022-11-23 02:43:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23053 states to 23053 states and 32794 transitions. [2022-11-23 02:43:57,827 INFO L78 Accepts]: Start accepts. Automaton has 23053 states and 32794 transitions. Word has length 173 [2022-11-23 02:43:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:57,828 INFO L495 AbstractCegarLoop]: Abstraction has 23053 states and 32794 transitions. [2022-11-23 02:43:57,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:43:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 23053 states and 32794 transitions. [2022-11-23 02:43:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 02:43:57,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:57,836 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:57,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 02:43:57,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1159214371, now seen corresponding path program 1 times [2022-11-23 02:43:57,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:57,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330426760] [2022-11-23 02:43:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:43:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:43:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:43:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:43:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:43:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 02:43:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:43:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:43:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:43:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-23 02:43:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 02:43:58,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:58,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330426760] [2022-11-23 02:43:58,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330426760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:58,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:58,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:43:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932099058] [2022-11-23 02:43:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:58,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:43:58,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:43:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:43:58,941 INFO L87 Difference]: Start difference. First operand 23053 states and 32794 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:44:03,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:44:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:44:07,357 INFO L93 Difference]: Finished difference Result 52336 states and 74995 transitions. [2022-11-23 02:44:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:44:07,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 173 [2022-11-23 02:44:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:44:07,449 INFO L225 Difference]: With dead ends: 52336 [2022-11-23 02:44:07,449 INFO L226 Difference]: Without dead ends: 29436 [2022-11-23 02:44:07,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:44:07,490 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1257 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 702 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:44:07,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1971 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 1143 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 02:44:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29436 states. [2022-11-23 02:44:09,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29436 to 25568. [2022-11-23 02:44:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25568 states, 20587 states have (on average 1.4006411813280226) internal successors, (28835), 20824 states have internal predecessors, (28835), 3689 states have call successors, (3689), 1341 states have call predecessors, (3689), 1291 states have return successors, (3617), 3573 states have call predecessors, (3617), 3617 states have call successors, (3617) [2022-11-23 02:44:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25568 states to 25568 states and 36141 transitions. [2022-11-23 02:44:09,312 INFO L78 Accepts]: Start accepts. Automaton has 25568 states and 36141 transitions. Word has length 173 [2022-11-23 02:44:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:44:09,313 INFO L495 AbstractCegarLoop]: Abstraction has 25568 states and 36141 transitions. [2022-11-23 02:44:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 02:44:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 25568 states and 36141 transitions. [2022-11-23 02:44:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-23 02:44:09,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:09,321 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:44:09,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 02:44:09,321 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:09,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1592872579, now seen corresponding path program 1 times [2022-11-23 02:44:09,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:44:09,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171830734] [2022-11-23 02:44:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:44:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:44:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:44:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:44:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:44:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:44:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 02:44:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:44:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-23 02:44:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 02:44:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:44:10,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171830734] [2022-11-23 02:44:10,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171830734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:44:10,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696134848] [2022-11-23 02:44:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:10,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:44:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:44:10,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:44:10,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:44:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:13,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 13946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:44:13,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 02:44:13,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:44:13,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696134848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:44:13,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:44:13,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-11-23 02:44:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234372241] [2022-11-23 02:44:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:44:13,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:44:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:44:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:44:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:44:13,914 INFO L87 Difference]: Start difference. First operand 25568 states and 36141 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 02:44:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:44:16,878 INFO L93 Difference]: Finished difference Result 63607 states and 89829 transitions. [2022-11-23 02:44:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:44:16,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 173 [2022-11-23 02:44:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:44:17,024 INFO L225 Difference]: With dead ends: 63607 [2022-11-23 02:44:17,024 INFO L226 Difference]: Without dead ends: 38192 [2022-11-23 02:44:17,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:44:17,081 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 666 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:44:17,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1507 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:44:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38192 states. [2022-11-23 02:44:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38192 to 38017. [2022-11-23 02:44:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38017 states, 30222 states have (on average 1.3932234795844087) internal successors, (42106), 30584 states have internal predecessors, (42106), 5803 states have call successors, (5803), 2044 states have call predecessors, (5803), 1991 states have return successors, (5726), 5679 states have call predecessors, (5726), 5726 states have call successors, (5726) [2022-11-23 02:44:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38017 states to 38017 states and 53635 transitions. [2022-11-23 02:44:19,920 INFO L78 Accepts]: Start accepts. Automaton has 38017 states and 53635 transitions. Word has length 173 [2022-11-23 02:44:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:44:19,920 INFO L495 AbstractCegarLoop]: Abstraction has 38017 states and 53635 transitions. [2022-11-23 02:44:19,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 02:44:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 38017 states and 53635 transitions. [2022-11-23 02:44:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 02:44:19,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:44:19,931 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:44:19,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:44:20,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aac1e2d8-872b-4b24-9a3c-d92e7061ed78/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:44:20,160 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:44:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 898656358, now seen corresponding path program 1 times [2022-11-23 02:44:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:44:20,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836464021] [2022-11-23 02:44:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:44:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:44:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:44:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:44:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:44:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:44:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:44:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:44:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:44:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-23 02:44:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-23 02:44:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:44:21,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836464021] [2022-11-23 02:44:21,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836464021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:44:21,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:44:21,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:44:21,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043108219] [2022-11-23 02:44:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:44:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:44:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:44:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:44:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:44:21,009 INFO L87 Difference]: Start difference. First operand 38017 states and 53635 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 02:44:26,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:44:28,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:44:31,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:44:33,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []