./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN --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 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:47,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:47,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:48,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:48,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:48,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:48,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:48,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:48,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:48,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:48,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:48,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:48,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:48,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:48,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:48,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:48,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:48,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:48,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:48,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:48,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:48,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:48,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:48,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:48,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:48,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:48,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:48,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:48,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:48,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:48,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:48,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:48,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:48,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:48,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:48,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:48,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:48,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:48,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:48,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:48,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:48,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:12:48,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:48,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:48,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:48,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:48,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:48,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:48,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:48,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:48,164 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:48,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:48,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:48,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:48,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:48,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:48,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:48,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:48,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:48,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:48,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:48,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:48,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:48,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:48,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:48,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:48,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:48,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:48,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:48,171 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:48,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:48,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:48,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2022-11-20 11:12:48,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:48,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:48,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:48,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:48,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:48,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-20 11:12:52,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:53,044 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:53,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-20 11:12:53,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/data/f36e9d56a/0b79788bb59443feb2a93d21ca9b9c5a/FLAG5e4f99c01 [2022-11-20 11:12:53,104 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/data/f36e9d56a/0b79788bb59443feb2a93d21ca9b9c5a [2022-11-20 11:12:53,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:53,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:53,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:53,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:53,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:53,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:53" (1/1) ... [2022-11-20 11:12:53,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a29d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:53, skipping insertion in model container [2022-11-20 11:12:53,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:53" (1/1) ... [2022-11-20 11:12:53,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:53,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:54,371 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_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-20 11:12:55,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:55,240 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:55,515 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_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-20 11:12:55,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:55,975 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:55,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55 WrapperNode [2022-11-20 11:12:55,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:55,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:55,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:55,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:55,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,340 INFO L138 Inliner]: procedures = 178, calls = 1875, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3568 [2022-11-20 11:12:56,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:56,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:56,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:56,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:56,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:56,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:56,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:56,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:56,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2022-11-20 11:12:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:56,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-20 11:12:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-20 11:12:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:12:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-20 11:12:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-20 11:12:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-20 11:12:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-20 11:12:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2022-11-20 11:12:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2022-11-20 11:12:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-11-20 11:12:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-11-20 11:12:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:12:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:12:56,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-20 11:12:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-20 11:12:56,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:12:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:12:56,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:12:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2022-11-20 11:12:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2022-11-20 11:12:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-20 11:12:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-20 11:12:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:12:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:12:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 11:12:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 11:12:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:12:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:12:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-20 11:12:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-20 11:12:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 11:12:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 11:12:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-20 11:12:56,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-20 11:12:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:12:56,825 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:12:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2022-11-20 11:12:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2022-11-20 11:12:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2022-11-20 11:12:56,826 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2022-11-20 11:12:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-20 11:12:56,827 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-20 11:12:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2022-11-20 11:12:56,827 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2022-11-20 11:12:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:12:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:12:56,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:12:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:12:56,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:12:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-20 11:12:56,829 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-20 11:12:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:12:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:12:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:12:56,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:12:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:12:56,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:12:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:12:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-20 11:12:56,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-20 11:12:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2022-11-20 11:12:56,834 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2022-11-20 11:12:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2022-11-20 11:12:56,834 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2022-11-20 11:12:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2022-11-20 11:12:56,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2022-11-20 11:12:56,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:56,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 11:12:56,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 11:12:56,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:12:56,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:56,836 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-20 11:12:56,836 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-20 11:12:56,836 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-20 11:12:56,837 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-20 11:12:56,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:12:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:12:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:12:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:12:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:12:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-20 11:12:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-20 11:12:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-20 11:12:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-20 11:12:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2022-11-20 11:12:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2022-11-20 11:12:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-20 11:12:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-20 11:12:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2022-11-20 11:12:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2022-11-20 11:12:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2022-11-20 11:12:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2022-11-20 11:12:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:12:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-20 11:12:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-20 11:12:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2022-11-20 11:12:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2022-11-20 11:12:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2022-11-20 11:12:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2022-11-20 11:12:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 11:12:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 11:12:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 11:12:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 11:12:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 11:12:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 11:12:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2022-11-20 11:12:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2022-11-20 11:12:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:12:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:12:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2022-11-20 11:12:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2022-11-20 11:12:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 11:12:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 11:12:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-20 11:12:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-20 11:12:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-20 11:12:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-20 11:12:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:12:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2022-11-20 11:12:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2022-11-20 11:12:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-20 11:12:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-20 11:12:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 11:12:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 11:12:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 11:12:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-20 11:12:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-20 11:12:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2022-11-20 11:12:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2022-11-20 11:12:57,742 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:57,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:12:58,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:13:02,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-20 11:13:03,672 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:13:03,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:13:03,728 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:13:03,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:03 BoogieIcfgContainer [2022-11-20 11:13:03,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:13:03,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:13:03,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:13:03,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:13:03,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:53" (1/3) ... [2022-11-20 11:13:03,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31eb5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:03, skipping insertion in model container [2022-11-20 11:13:03,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (2/3) ... [2022-11-20 11:13:03,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31eb5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:03, skipping insertion in model container [2022-11-20 11:13:03,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:03" (3/3) ... [2022-11-20 11:13:03,750 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-20 11:13:03,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:13:03,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:13:03,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:13:03,902 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;@658fb016, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:13:03,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:13:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 696 states have (on average 1.3563218390804597) internal successors, (944), 715 states have internal predecessors, (944), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2022-11-20 11:13:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:13:03,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:03,932 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] [2022-11-20 11:13:03,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -182321689, now seen corresponding path program 1 times [2022-11-20 11:13:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:03,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913110468] [2022-11-20 11:13:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:04,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913110468] [2022-11-20 11:13:04,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913110468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:04,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:04,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:04,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654228460] [2022-11-20 11:13:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:04,939 INFO L87 Difference]: Start difference. First operand has 961 states, 696 states have (on average 1.3563218390804597) internal successors, (944), 715 states have internal predecessors, (944), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:13:10,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:20,217 INFO L93 Difference]: Finished difference Result 3544 states and 5272 transitions. [2022-11-20 11:13:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:13:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-20 11:13:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:20,284 INFO L225 Difference]: With dead ends: 3544 [2022-11-20 11:13:20,284 INFO L226 Difference]: Without dead ends: 2564 [2022-11-20 11:13:20,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:13:20,306 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 3201 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 1479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:20,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3381 Valid, 3514 Invalid, 3941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1479 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-20 11:13:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-11-20 11:13:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1863. [2022-11-20 11:13:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1359 states have (on average 1.345842531272995) internal successors, (1829), 1376 states have internal predecessors, (1829), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-20 11:13:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2609 transitions. [2022-11-20 11:13:20,639 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2609 transitions. Word has length 28 [2022-11-20 11:13:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:20,640 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 2609 transitions. [2022-11-20 11:13:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:13:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2609 transitions. [2022-11-20 11:13:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:13:20,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:20,644 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] [2022-11-20 11:13:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:13:20,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1624976195, now seen corresponding path program 1 times [2022-11-20 11:13:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:20,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043620453] [2022-11-20 11:13:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:13:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:13:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:21,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043620453] [2022-11-20 11:13:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043620453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:21,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436157919] [2022-11-20 11:13:21,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:21,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:21,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:21,651 INFO L87 Difference]: Start difference. First operand 1863 states and 2609 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:37,532 INFO L93 Difference]: Finished difference Result 6954 states and 10409 transitions. [2022-11-20 11:13:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:13:37,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-20 11:13:37,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:37,575 INFO L225 Difference]: With dead ends: 6954 [2022-11-20 11:13:37,576 INFO L226 Difference]: Without dead ends: 5105 [2022-11-20 11:13:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:13:37,591 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 3312 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 1564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1564 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:37,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 3405 Invalid, 4030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1564 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-20 11:13:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2022-11-20 11:13:37,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 4254. [2022-11-20 11:13:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 3107 states have (on average 1.3299002252977148) internal successors, (4132), 3140 states have internal predecessors, (4132), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-20 11:13:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 6194 transitions. [2022-11-20 11:13:37,947 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 6194 transitions. Word has length 38 [2022-11-20 11:13:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:37,949 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 6194 transitions. [2022-11-20 11:13:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 6194 transitions. [2022-11-20 11:13:37,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:13:37,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:37,962 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] [2022-11-20 11:13:37,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:13:37,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1165843336, now seen corresponding path program 1 times [2022-11-20 11:13:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:37,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112552450] [2022-11-20 11:13:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:13:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:13:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112552450] [2022-11-20 11:13:38,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112552450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:38,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:38,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:38,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195389001] [2022-11-20 11:13:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:38,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:38,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:38,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:38,780 INFO L87 Difference]: Start difference. First operand 4254 states and 6194 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:41,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:47,295 INFO L93 Difference]: Finished difference Result 5096 states and 7624 transitions. [2022-11-20 11:13:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:13:47,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-20 11:13:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:47,340 INFO L225 Difference]: With dead ends: 5096 [2022-11-20 11:13:47,340 INFO L226 Difference]: Without dead ends: 5093 [2022-11-20 11:13:47,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:47,347 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2266 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:47,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 2051 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-20 11:13:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2022-11-20 11:13:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 4253. [2022-11-20 11:13:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 3107 states have (on average 1.3295783714193756) internal successors, (4131), 3139 states have internal predecessors, (4131), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-20 11:13:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6192 transitions. [2022-11-20 11:13:47,750 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6192 transitions. Word has length 39 [2022-11-20 11:13:47,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:47,751 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6192 transitions. [2022-11-20 11:13:47,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6192 transitions. [2022-11-20 11:13:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:13:47,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:47,758 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] [2022-11-20 11:13:47,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:13:47,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1781898010, now seen corresponding path program 1 times [2022-11-20 11:13:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:47,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320651000] [2022-11-20 11:13:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:13:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:13:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:48,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320651000] [2022-11-20 11:13:48,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320651000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:48,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:48,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109903155] [2022-11-20 11:13:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:48,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:48,129 INFO L87 Difference]: Start difference. First operand 4253 states and 6192 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:51,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:56,866 INFO L93 Difference]: Finished difference Result 5095 states and 7622 transitions. [2022-11-20 11:13:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:13:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-20 11:13:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:56,904 INFO L225 Difference]: With dead ends: 5095 [2022-11-20 11:13:56,904 INFO L226 Difference]: Without dead ends: 5092 [2022-11-20 11:13:56,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:56,910 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 2267 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 2045 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 11:13:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2022-11-20 11:13:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 4252. [2022-11-20 11:13:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 3107 states have (on average 1.3292565175410365) internal successors, (4130), 3138 states have internal predecessors, (4130), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-20 11:13:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 6190 transitions. [2022-11-20 11:13:57,357 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 6190 transitions. Word has length 40 [2022-11-20 11:13:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 4252 states and 6190 transitions. [2022-11-20 11:13:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:13:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 6190 transitions. [2022-11-20 11:13:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:13:57,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:57,363 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] [2022-11-20 11:13:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:13:57,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 595248443, now seen corresponding path program 1 times [2022-11-20 11:13:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:57,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684236566] [2022-11-20 11:13:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:57,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:13:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:13:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:57,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684236566] [2022-11-20 11:13:57,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684236566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:57,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:57,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:57,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279212247] [2022-11-20 11:13:57,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:57,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:57,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:57,687 INFO L87 Difference]: Start difference. First operand 4252 states and 6190 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:14:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:09,960 INFO L93 Difference]: Finished difference Result 14371 states and 22056 transitions. [2022-11-20 11:14:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-20 11:14:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:10,040 INFO L225 Difference]: With dead ends: 14371 [2022-11-20 11:14:10,040 INFO L226 Difference]: Without dead ends: 10133 [2022-11-20 11:14:10,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:10,075 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 3249 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:10,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3412 Valid, 3478 Invalid, 3884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1529 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-20 11:14:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2022-11-20 11:14:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 8711. [2022-11-20 11:14:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 6367 states have (on average 1.3290403643788284) internal successors, (8462), 6427 states have internal predecessors, (8462), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-20 11:14:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 13101 transitions. [2022-11-20 11:14:11,040 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 13101 transitions. Word has length 41 [2022-11-20 11:14:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 8711 states and 13101 transitions. [2022-11-20 11:14:11,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:14:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 13101 transitions. [2022-11-20 11:14:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:14:11,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:11,047 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] [2022-11-20 11:14:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:14:11,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1272349321, now seen corresponding path program 1 times [2022-11-20 11:14:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:11,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081721668] [2022-11-20 11:14:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:14:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:14:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:14:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081721668] [2022-11-20 11:14:11,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081721668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:11,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:11,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:14:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933396286] [2022-11-20 11:14:11,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:14:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:14:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:14:11,377 INFO L87 Difference]: Start difference. First operand 8711 states and 13101 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:14:14,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:16,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:21,529 INFO L93 Difference]: Finished difference Result 10101 states and 15485 transitions. [2022-11-20 11:14:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:14:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-20 11:14:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:21,591 INFO L225 Difference]: With dead ends: 10101 [2022-11-20 11:14:21,591 INFO L226 Difference]: Without dead ends: 10089 [2022-11-20 11:14:21,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:14:21,599 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 2284 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:21,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 1999 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [949 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-20 11:14:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2022-11-20 11:14:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 8701. [2022-11-20 11:14:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8701 states, 6358 states have (on average 1.328719723183391) internal successors, (8448), 6417 states have internal predecessors, (8448), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-20 11:14:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 13086 transitions. [2022-11-20 11:14:22,430 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 13086 transitions. Word has length 42 [2022-11-20 11:14:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:22,430 INFO L495 AbstractCegarLoop]: Abstraction has 8701 states and 13086 transitions. [2022-11-20 11:14:22,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:14:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 13086 transitions. [2022-11-20 11:14:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:14:22,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:22,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:14:22,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1928894233, now seen corresponding path program 1 times [2022-11-20 11:14:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:22,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778161200] [2022-11-20 11:14:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:14:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:14:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:14:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:14:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:14:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:14:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:14:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:14:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:22,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778161200] [2022-11-20 11:14:22,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778161200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:22,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:22,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:14:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244919722] [2022-11-20 11:14:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:14:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:14:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:14:22,932 INFO L87 Difference]: Start difference. First operand 8701 states and 13086 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:14:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:42,494 INFO L93 Difference]: Finished difference Result 28985 states and 50125 transitions. [2022-11-20 11:14:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:14:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-20 11:14:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:42,660 INFO L225 Difference]: With dead ends: 28985 [2022-11-20 11:14:42,660 INFO L226 Difference]: Without dead ends: 20298 [2022-11-20 11:14:42,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:14:42,725 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 6467 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 5185 mSolverCounterSat, 4708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6570 SdHoareTripleChecker+Valid, 5283 SdHoareTripleChecker+Invalid, 9893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4708 IncrementalHoareTripleChecker+Valid, 5185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:42,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6570 Valid, 5283 Invalid, 9893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4708 Valid, 5185 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2022-11-20 11:14:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20298 states. [2022-11-20 11:14:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20298 to 11645. [2022-11-20 11:14:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11645 states, 8436 states have (on average 1.3110478899952585) internal successors, (11060), 8463 states have internal predecessors, (11060), 2337 states have call successors, (2337), 437 states have call predecessors, (2337), 871 states have return successors, (5025), 2784 states have call predecessors, (5025), 2331 states have call successors, (5025) [2022-11-20 11:14:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11645 states to 11645 states and 18422 transitions. [2022-11-20 11:14:44,637 INFO L78 Accepts]: Start accepts. Automaton has 11645 states and 18422 transitions. Word has length 93 [2022-11-20 11:14:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:44,638 INFO L495 AbstractCegarLoop]: Abstraction has 11645 states and 18422 transitions. [2022-11-20 11:14:44,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:14:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11645 states and 18422 transitions. [2022-11-20 11:14:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:14:44,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:44,645 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:14:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:14:44,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash -807179715, now seen corresponding path program 1 times [2022-11-20 11:14:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:44,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379703113] [2022-11-20 11:14:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:14:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:14:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:14:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:14:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:14:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:14:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:14:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:14:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:14:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:14:45,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:45,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379703113] [2022-11-20 11:14:45,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379703113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:45,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:14:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516420283] [2022-11-20 11:14:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:14:45,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:14:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:14:45,290 INFO L87 Difference]: Start difference. First operand 11645 states and 18422 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:15:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:08,762 INFO L93 Difference]: Finished difference Result 21880 states and 37054 transitions. [2022-11-20 11:15:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:15:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-20 11:15:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:08,851 INFO L225 Difference]: With dead ends: 21880 [2022-11-20 11:15:08,851 INFO L226 Difference]: Without dead ends: 10256 [2022-11-20 11:15:08,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:15:08,920 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 6083 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 5888 mSolverCounterSat, 4671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6184 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 10559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4671 IncrementalHoareTripleChecker+Valid, 5888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:08,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6184 Valid, 5749 Invalid, 10559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4671 Valid, 5888 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2022-11-20 11:15:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10256 states. [2022-11-20 11:15:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10256 to 5911. [2022-11-20 11:15:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 4290 states have (on average 1.3104895104895105) internal successors, (5622), 4305 states have internal predecessors, (5622), 1177 states have call successors, (1177), 227 states have call predecessors, (1177), 443 states have return successors, (2518), 1398 states have call predecessors, (2518), 1171 states have call successors, (2518) [2022-11-20 11:15:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 9317 transitions. [2022-11-20 11:15:09,923 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 9317 transitions. Word has length 113 [2022-11-20 11:15:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:09,923 INFO L495 AbstractCegarLoop]: Abstraction has 5911 states and 9317 transitions. [2022-11-20 11:15:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:15:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 9317 transitions. [2022-11-20 11:15:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:15:09,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:09,928 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:15:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:15:09,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1481782380, now seen corresponding path program 1 times [2022-11-20 11:15:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:09,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677364564] [2022-11-20 11:15:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:15:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:15:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:15:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:15:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:15:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:15:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:15:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:15:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677364564] [2022-11-20 11:15:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677364564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:10,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:10,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:15:10,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942373390] [2022-11-20 11:15:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:15:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:15:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:15:10,409 INFO L87 Difference]: Start difference. First operand 5911 states and 9317 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:15:16,113 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 [] [2022-11-20 11:15:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:39,515 INFO L93 Difference]: Finished difference Result 21777 states and 35361 transitions. [2022-11-20 11:15:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:15:39,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-11-20 11:15:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:39,618 INFO L225 Difference]: With dead ends: 21777 [2022-11-20 11:15:39,619 INFO L226 Difference]: Without dead ends: 15901 [2022-11-20 11:15:39,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:15:39,656 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 4102 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 5270 mSolverCounterSat, 2857 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 6702 SdHoareTripleChecker+Invalid, 8128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2857 IncrementalHoareTripleChecker+Valid, 5270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:39,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 6702 Invalid, 8128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2857 Valid, 5270 Invalid, 1 Unknown, 0 Unchecked, 26.7s Time] [2022-11-20 11:15:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2022-11-20 11:15:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 11549. [2022-11-20 11:15:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11549 states, 8364 states have (on average 1.3078670492587279) internal successors, (10939), 8391 states have internal predecessors, (10939), 2309 states have call successors, (2309), 441 states have call predecessors, (2309), 875 states have return successors, (4881), 2756 states have call predecessors, (4881), 2303 states have call successors, (4881) [2022-11-20 11:15:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 18129 transitions. [2022-11-20 11:15:41,195 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 18129 transitions. Word has length 107 [2022-11-20 11:15:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:41,195 INFO L495 AbstractCegarLoop]: Abstraction has 11549 states and 18129 transitions. [2022-11-20 11:15:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:15:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 18129 transitions. [2022-11-20 11:15:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:15:41,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:41,200 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 11:15:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:15:41,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1671752461, now seen corresponding path program 1 times [2022-11-20 11:15:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:41,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927873374] [2022-11-20 11:15:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:15:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:15:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:15:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:15:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:15:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:15:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:15:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:15:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:15:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927873374] [2022-11-20 11:15:41,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927873374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:41,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:41,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:15:41,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302344635] [2022-11-20 11:15:41,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:15:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:15:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:15:41,797 INFO L87 Difference]: Start difference. First operand 11549 states and 18129 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:15:50,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:11,387 INFO L93 Difference]: Finished difference Result 36451 states and 59212 transitions. [2022-11-20 11:16:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:16:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-20 11:16:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:11,545 INFO L225 Difference]: With dead ends: 36451 [2022-11-20 11:16:11,545 INFO L226 Difference]: Without dead ends: 24937 [2022-11-20 11:16:11,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:16:11,608 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 4915 mSDsluCounter, 4979 mSDsCounter, 0 mSdLazyCounter, 5525 mSolverCounterSat, 3380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5125 SdHoareTripleChecker+Valid, 6895 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3380 IncrementalHoareTripleChecker+Valid, 5525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:11,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5125 Valid, 6895 Invalid, 8905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3380 Valid, 5525 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2022-11-20 11:16:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2022-11-20 11:16:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 17187. [2022-11-20 11:16:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17187 states, 12438 states have (on average 1.307284129281235) internal successors, (16260), 12477 states have internal predecessors, (16260), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1307 states have return successors, (7244), 4114 states have call predecessors, (7244), 3435 states have call successors, (7244) [2022-11-20 11:16:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17187 states to 17187 states and 26945 transitions. [2022-11-20 11:16:14,052 INFO L78 Accepts]: Start accepts. Automaton has 17187 states and 26945 transitions. Word has length 132 [2022-11-20 11:16:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:14,053 INFO L495 AbstractCegarLoop]: Abstraction has 17187 states and 26945 transitions. [2022-11-20 11:16:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:16:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 17187 states and 26945 transitions. [2022-11-20 11:16:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 11:16:14,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:14,059 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 11:16:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:16:14,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1447596693, now seen corresponding path program 1 times [2022-11-20 11:16:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737300963] [2022-11-20 11:16:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:16:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:16:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:16:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:16:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:16:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:16:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:16:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:16:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:16:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:16:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:16:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:16:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:15,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737300963] [2022-11-20 11:16:15,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737300963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:15,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:15,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:16:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255749333] [2022-11-20 11:16:15,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:15,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:16:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:16:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:16:15,085 INFO L87 Difference]: Start difference. First operand 17187 states and 26945 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:16:24,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:40,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:42,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:17:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:14,377 INFO L93 Difference]: Finished difference Result 59072 states and 103288 transitions. [2022-11-20 11:17:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:17:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-20 11:17:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:14,641 INFO L225 Difference]: With dead ends: 59072 [2022-11-20 11:17:14,641 INFO L226 Difference]: Without dead ends: 41920 [2022-11-20 11:17:14,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:17:14,751 INFO L413 NwaCegarLoop]: 2083 mSDtfsCounter, 8742 mSDsluCounter, 11529 mSDsCounter, 0 mSdLazyCounter, 15358 mSolverCounterSat, 9267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8952 SdHoareTripleChecker+Valid, 13612 SdHoareTripleChecker+Invalid, 24625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 9267 IncrementalHoareTripleChecker+Valid, 15358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:14,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8952 Valid, 13612 Invalid, 24625 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [9267 Valid, 15358 Invalid, 0 Unknown, 0 Unchecked, 51.4s Time] [2022-11-20 11:17:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41920 states. [2022-11-20 11:17:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41920 to 17203. [2022-11-20 11:17:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17203 states, 12450 states have (on average 1.306987951807229) internal successors, (16272), 12489 states have internal predecessors, (16272), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1311 states have return successors, (7252), 4118 states have call predecessors, (7252), 3435 states have call successors, (7252) [2022-11-20 11:17:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17203 states to 17203 states and 26965 transitions. [2022-11-20 11:17:18,026 INFO L78 Accepts]: Start accepts. Automaton has 17203 states and 26965 transitions. Word has length 139 [2022-11-20 11:17:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 17203 states and 26965 transitions. [2022-11-20 11:17:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:17:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 17203 states and 26965 transitions. [2022-11-20 11:17:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 11:17:18,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:18,032 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2022-11-20 11:17:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:17:18,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 957613708, now seen corresponding path program 1 times [2022-11-20 11:17:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:18,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203839231] [2022-11-20 11:17:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:17:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:17:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:17:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:17:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:17:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:17:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:17:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:17:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:17:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:17:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:17:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 11:17:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:17:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 11:17:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:17:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:17:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203839231] [2022-11-20 11:17:18,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203839231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:18,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:18,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:17:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344908569] [2022-11-20 11:17:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:17:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:17:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:17:18,816 INFO L87 Difference]: Start difference. First operand 17203 states and 26965 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:17:25,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:17:29,095 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 [] [2022-11-20 11:18:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:15,271 INFO L93 Difference]: Finished difference Result 59116 states and 103344 transitions. [2022-11-20 11:18:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:18:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-11-20 11:18:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:15,580 INFO L225 Difference]: With dead ends: 59116 [2022-11-20 11:18:15,580 INFO L226 Difference]: Without dead ends: 41948 [2022-11-20 11:18:15,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:18:15,686 INFO L413 NwaCegarLoop]: 2096 mSDtfsCounter, 8240 mSDsluCounter, 10562 mSDsCounter, 0 mSdLazyCounter, 13276 mSolverCounterSat, 8620 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8445 SdHoareTripleChecker+Valid, 12658 SdHoareTripleChecker+Invalid, 21897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8620 IncrementalHoareTripleChecker+Valid, 13276 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:15,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8445 Valid, 12658 Invalid, 21897 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8620 Valid, 13276 Invalid, 1 Unknown, 0 Unchecked, 47.2s Time] [2022-11-20 11:18:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41948 states. [2022-11-20 11:18:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41948 to 17203. [2022-11-20 11:18:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17203 states, 12450 states have (on average 1.306987951807229) internal successors, (16272), 12489 states have internal predecessors, (16272), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1311 states have return successors, (7252), 4118 states have call predecessors, (7252), 3435 states have call successors, (7252) [2022-11-20 11:18:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17203 states to 17203 states and 26965 transitions. [2022-11-20 11:18:19,347 INFO L78 Accepts]: Start accepts. Automaton has 17203 states and 26965 transitions. Word has length 143 [2022-11-20 11:18:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:19,348 INFO L495 AbstractCegarLoop]: Abstraction has 17203 states and 26965 transitions. [2022-11-20 11:18:19,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:18:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 17203 states and 26965 transitions. [2022-11-20 11:18:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 11:18:19,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:19,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:19,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:18:19,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:19,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -584119533, now seen corresponding path program 1 times [2022-11-20 11:18:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778441278] [2022-11-20 11:18:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:19,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:18:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:18:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:18:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:18:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:18:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:18:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:18:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:18:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:18:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:18:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 11:18:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:18:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:18:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:18:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:21,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778441278] [2022-11-20 11:18:21,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778441278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:21,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746197405] [2022-11-20 11:18:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:21,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:21,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:21,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:21,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:18:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:18:22,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:18:23,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:18:24,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746197405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:24,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:24,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-11-20 11:18:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104149883] [2022-11-20 11:18:24,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:18:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:18:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:18:24,109 INFO L87 Difference]: Start difference. First operand 17203 states and 26965 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 11:18:31,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:18:43,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:18:49,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:19:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:10,036 INFO L93 Difference]: Finished difference Result 41360 states and 71104 transitions. [2022-11-20 11:19:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:19:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) Word has length 169 [2022-11-20 11:19:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:10,186 INFO L225 Difference]: With dead ends: 41360 [2022-11-20 11:19:10,187 INFO L226 Difference]: Without dead ends: 24168 [2022-11-20 11:19:10,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=1216, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:19:10,312 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1210 mSDsluCounter, 15916 mSDsCounter, 0 mSdLazyCounter, 11291 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 16929 SdHoareTripleChecker+Invalid, 11806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 11291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:10,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 16929 Invalid, 11806 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [515 Valid, 11291 Invalid, 0 Unknown, 0 Unchecked, 40.9s Time] [2022-11-20 11:19:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24168 states. [2022-11-20 11:19:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24168 to 17371. [2022-11-20 11:19:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17371 states, 12570 states have (on average 1.3040572792362768) internal successors, (16392), 12609 states have internal predecessors, (16392), 3453 states have call successors, (3453), 655 states have call predecessors, (3453), 1347 states have return successors, (7444), 4166 states have call predecessors, (7444), 3447 states have call successors, (7444) [2022-11-20 11:19:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17371 states to 17371 states and 27289 transitions. [2022-11-20 11:19:13,030 INFO L78 Accepts]: Start accepts. Automaton has 17371 states and 27289 transitions. Word has length 169 [2022-11-20 11:19:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:13,031 INFO L495 AbstractCegarLoop]: Abstraction has 17371 states and 27289 transitions. [2022-11-20 11:19:13,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 11:19:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17371 states and 27289 transitions. [2022-11-20 11:19:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-20 11:19:13,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:13,038 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:13,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:19:13,252 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2010838483, now seen corresponding path program 1 times [2022-11-20 11:19:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:13,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886285256] [2022-11-20 11:19:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:19:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:19:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:19:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:19:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:19:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:19:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:19:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:19:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:19:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:19:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 11:19:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:19:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:15,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886285256] [2022-11-20 11:19:15,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886285256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:15,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:15,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:19:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988968591] [2022-11-20 11:19:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:15,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:19:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:15,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:19:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:19:15,145 INFO L87 Difference]: Start difference. First operand 17371 states and 27289 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 11:19:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:30,673 INFO L93 Difference]: Finished difference Result 41480 states and 71062 transitions. [2022-11-20 11:19:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2022-11-20 11:19:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:30,829 INFO L225 Difference]: With dead ends: 41480 [2022-11-20 11:19:30,829 INFO L226 Difference]: Without dead ends: 24144 [2022-11-20 11:19:30,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:19:30,957 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 1518 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:30,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 4210 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-20 11:19:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24144 states. [2022-11-20 11:19:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24144 to 17395. [2022-11-20 11:19:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 12594 states have (on average 1.303477846593616) internal successors, (16416), 12633 states have internal predecessors, (16416), 3453 states have call successors, (3453), 655 states have call predecessors, (3453), 1347 states have return successors, (7444), 4166 states have call predecessors, (7444), 3447 states have call successors, (7444) [2022-11-20 11:19:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 27313 transitions. [2022-11-20 11:19:33,581 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 27313 transitions. Word has length 181 [2022-11-20 11:19:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:33,582 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 27313 transitions. [2022-11-20 11:19:33,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 11:19:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 27313 transitions. [2022-11-20 11:19:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:19:33,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:33,590 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:19:33,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1870745108, now seen corresponding path program 1 times [2022-11-20 11:19:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386095612] [2022-11-20 11:19:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:19:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:19:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:19:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:19:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:19:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:19:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:19:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:19:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:19:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 11:19:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:19:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:35,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386095612] [2022-11-20 11:19:35,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386095612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:35,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:35,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:19:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913612345] [2022-11-20 11:19:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:19:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:19:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:19:35,900 INFO L87 Difference]: Start difference. First operand 17395 states and 27313 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:19:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:53,956 INFO L93 Difference]: Finished difference Result 41462 states and 69584 transitions. [2022-11-20 11:19:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:19:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 194 [2022-11-20 11:19:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:54,098 INFO L225 Difference]: With dead ends: 41462 [2022-11-20 11:19:54,098 INFO L226 Difference]: Without dead ends: 24102 [2022-11-20 11:19:54,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:19:54,203 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2540 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:54,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2649 Valid, 5560 Invalid, 5178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1671 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-20 11:19:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24102 states. [2022-11-20 11:19:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24102 to 17455. [2022-11-20 11:19:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17455 states, 12642 states have (on average 1.3032747982914097) internal successors, (16476), 12669 states have internal predecessors, (16476), 3465 states have call successors, (3465), 655 states have call predecessors, (3465), 1347 states have return successors, (7456), 4190 states have call predecessors, (7456), 3459 states have call successors, (7456) [2022-11-20 11:19:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17455 states to 17455 states and 27397 transitions. [2022-11-20 11:19:56,797 INFO L78 Accepts]: Start accepts. Automaton has 17455 states and 27397 transitions. Word has length 194 [2022-11-20 11:19:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:56,798 INFO L495 AbstractCegarLoop]: Abstraction has 17455 states and 27397 transitions. [2022-11-20 11:19:56,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:19:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 17455 states and 27397 transitions. [2022-11-20 11:19:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 11:19:56,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:56,805 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:19:56,805 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 527027950, now seen corresponding path program 2 times [2022-11-20 11:19:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:56,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45079212] [2022-11-20 11:19:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:56,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:19:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:19:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:19:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:19:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:19:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:20:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:20:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:20:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:20:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:20:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 11:20:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 11:20:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 11:20:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45079212] [2022-11-20 11:20:00,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45079212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990594611] [2022-11-20 11:20:00,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:20:00,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:00,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:00,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:20:01,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:20:01,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:01,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:20:01,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 11:20:02,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:02,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990594611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:02,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:02,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-11-20 11:20:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761809079] [2022-11-20 11:20:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:20:02,104 INFO L87 Difference]: Start difference. First operand 17455 states and 27397 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:20:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:05,122 INFO L93 Difference]: Finished difference Result 35001 states and 58565 transitions. [2022-11-20 11:20:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 200 [2022-11-20 11:20:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:05,213 INFO L225 Difference]: With dead ends: 35001 [2022-11-20 11:20:05,213 INFO L226 Difference]: Without dead ends: 17581 [2022-11-20 11:20:05,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:20:05,323 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 5 mSDsluCounter, 5163 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:05,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6463 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:20:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17581 states. [2022-11-20 11:20:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17581 to 17455. [2022-11-20 11:20:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17455 states, 12642 states have (on average 1.3018509729473184) internal successors, (16458), 12669 states have internal predecessors, (16458), 3465 states have call successors, (3465), 655 states have call predecessors, (3465), 1347 states have return successors, (7456), 4190 states have call predecessors, (7456), 3459 states have call successors, (7456) [2022-11-20 11:20:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17455 states to 17455 states and 27379 transitions. [2022-11-20 11:20:07,962 INFO L78 Accepts]: Start accepts. Automaton has 17455 states and 27379 transitions. Word has length 200 [2022-11-20 11:20:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:07,963 INFO L495 AbstractCegarLoop]: Abstraction has 17455 states and 27379 transitions. [2022-11-20 11:20:07,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:20:07,964 INFO L276 IsEmpty]: Start isEmpty. Operand 17455 states and 27379 transitions. [2022-11-20 11:20:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 11:20:07,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:07,970 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:07,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:20:08,184 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash -962961678, now seen corresponding path program 1 times [2022-11-20 11:20:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:08,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564352839] [2022-11-20 11:20:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:20:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:20:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:20:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:20:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:20:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:20:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:20:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:20:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:20:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:20:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:20:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 11:20:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 11:20:11,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564352839] [2022-11-20 11:20:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564352839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610496206] [2022-11-20 11:20:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:11,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:11,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:11,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:20:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:12,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 3618 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 11:20:12,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:20:13,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:13,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610496206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:13,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:13,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2022-11-20 11:20:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678700759] [2022-11-20 11:20:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:13,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:20:13,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:13,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:20:13,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:20:13,333 INFO L87 Difference]: Start difference. First operand 17455 states and 27379 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 9 states have internal predecessors, (116), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-20 11:20:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:17,244 INFO L93 Difference]: Finished difference Result 35710 states and 59607 transitions. [2022-11-20 11:20:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:20:17,245 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 9 states have internal predecessors, (116), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) Word has length 194 [2022-11-20 11:20:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:17,329 INFO L225 Difference]: With dead ends: 35710 [2022-11-20 11:20:17,330 INFO L226 Difference]: Without dead ends: 18290 [2022-11-20 11:20:17,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:20:17,404 INFO L413 NwaCegarLoop]: 2661 mSDtfsCounter, 1504 mSDsluCounter, 22553 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 25214 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:17,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 25214 Invalid, 466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:20:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18290 states. [2022-11-20 11:20:20,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18290 to 18211. [2022-11-20 11:20:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 13182 states have (on average 1.302154453042027) internal successors, (17165), 13209 states have internal predecessors, (17165), 3663 states have call successors, (3663), 655 states have call predecessors, (3663), 1365 states have return successors, (8037), 4406 states have call predecessors, (8037), 3657 states have call successors, (8037) [2022-11-20 11:20:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 28865 transitions. [2022-11-20 11:20:20,606 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 28865 transitions. Word has length 194 [2022-11-20 11:20:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 28865 transitions. [2022-11-20 11:20:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 9 states have internal predecessors, (116), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-20 11:20:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 28865 transitions. [2022-11-20 11:20:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 11:20:20,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:20,614 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:20,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:20,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:20:20,829 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1697904937, now seen corresponding path program 1 times [2022-11-20 11:20:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:20,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473491258] [2022-11-20 11:20:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:20:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:20:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:20:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:20:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:20:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:20:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:20:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:20:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 11:20:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:20:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 11:20:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 11:20:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 11:20:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-20 11:20:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-20 11:20:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:20:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473491258] [2022-11-20 11:20:21,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473491258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:21,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:21,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:20:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255976838] [2022-11-20 11:20:21,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:21,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:20:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:20:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:20:21,832 INFO L87 Difference]: Start difference. First operand 18211 states and 28865 transitions. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 11:20:42,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:21:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:35,492 INFO L93 Difference]: Finished difference Result 61362 states and 108646 transitions. [2022-11-20 11:21:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 11:21:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 205 [2022-11-20 11:21:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:35,740 INFO L225 Difference]: With dead ends: 61362 [2022-11-20 11:21:35,740 INFO L226 Difference]: Without dead ends: 43186 [2022-11-20 11:21:35,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=768, Invalid=3522, Unknown=0, NotChecked=0, Total=4290 [2022-11-20 11:21:35,826 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 7394 mSDsluCounter, 13373 mSDsCounter, 0 mSdLazyCounter, 18371 mSolverCounterSat, 6677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7601 SdHoareTripleChecker+Valid, 15304 SdHoareTripleChecker+Invalid, 25048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6677 IncrementalHoareTripleChecker+Valid, 18371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:35,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7601 Valid, 15304 Invalid, 25048 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6677 Valid, 18371 Invalid, 0 Unknown, 0 Unchecked, 61.4s Time] [2022-11-20 11:21:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states. [2022-11-20 11:21:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43186 to 18231. [2022-11-20 11:21:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 13194 states have (on average 1.301879642261634) internal successors, (17177), 13221 states have internal predecessors, (17177), 3671 states have call successors, (3671), 655 states have call predecessors, (3671), 1365 states have return successors, (8045), 4414 states have call predecessors, (8045), 3665 states have call successors, (8045) [2022-11-20 11:21:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 28893 transitions. [2022-11-20 11:21:39,951 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 28893 transitions. Word has length 205 [2022-11-20 11:21:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:39,952 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 28893 transitions. [2022-11-20 11:21:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-20 11:21:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 28893 transitions. [2022-11-20 11:21:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 11:21:39,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:39,960 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:21:39,960 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1527433040, now seen corresponding path program 1 times [2022-11-20 11:21:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:39,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130323245] [2022-11-20 11:21:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:21:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:21:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:21:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:21:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:21:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:21:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:21:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:21:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:21:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:21:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:21:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:21:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:21:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:21:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 11:21:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 11:21:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 11:21:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:21:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 11:21:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:21:41,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:41,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130323245] [2022-11-20 11:21:41,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130323245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:41,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:41,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:21:41,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578070824] [2022-11-20 11:21:41,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:41,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:21:41,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:41,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:21:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:21:41,235 INFO L87 Difference]: Start difference. First operand 18231 states and 28893 transitions. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 11:22:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:22:12,071 INFO L93 Difference]: Finished difference Result 60872 states and 107540 transitions. [2022-11-20 11:22:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:22:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 224 [2022-11-20 11:22:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:22:12,310 INFO L225 Difference]: With dead ends: 60872 [2022-11-20 11:22:12,310 INFO L226 Difference]: Without dead ends: 42676 [2022-11-20 11:22:12,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:22:12,395 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 6021 mSDsluCounter, 4300 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 3042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6213 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 8411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3042 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:22:12,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6213 Valid, 5305 Invalid, 8411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3042 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2022-11-20 11:22:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42676 states. [2022-11-20 11:22:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42676 to 18275. [2022-11-20 11:22:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18275 states, 13220 states have (on average 1.301285930408472) internal successors, (17203), 13261 states have internal predecessors, (17203), 3671 states have call successors, (3671), 655 states have call predecessors, (3671), 1383 states have return successors, (8109), 4418 states have call predecessors, (8109), 3665 states have call successors, (8109) [2022-11-20 11:22:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18275 states to 18275 states and 28983 transitions. [2022-11-20 11:22:16,660 INFO L78 Accepts]: Start accepts. Automaton has 18275 states and 28983 transitions. Word has length 224 [2022-11-20 11:22:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:22:16,661 INFO L495 AbstractCegarLoop]: Abstraction has 18275 states and 28983 transitions. [2022-11-20 11:22:16,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 11:22:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 18275 states and 28983 transitions. [2022-11-20 11:22:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 11:22:16,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:22:16,669 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:22:16,670 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:22:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash -516315790, now seen corresponding path program 1 times [2022-11-20 11:22:16,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:16,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497221274] [2022-11-20 11:22:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:16,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:22:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:22:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:22:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:22:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:22:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 11:22:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:22:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:22:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:22:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 11:22:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 11:22:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 11:22:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:22:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 11:22:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:22:17,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:17,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497221274] [2022-11-20 11:22:17,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497221274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:22:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36054261] [2022-11-20 11:22:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:17,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:22:17,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:22:17,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:22:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:19,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 4127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:22:19,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:22:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 11:22:19,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:22:19,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36054261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:19,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:22:19,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-20 11:22:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172839494] [2022-11-20 11:22:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:22:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:22:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:22:19,926 INFO L87 Difference]: Start difference. First operand 18275 states and 28983 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:22:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:22:25,401 INFO L93 Difference]: Finished difference Result 24458 states and 38738 transitions. [2022-11-20 11:22:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:22:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 224 [2022-11-20 11:22:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:22:25,502 INFO L225 Difference]: With dead ends: 24458 [2022-11-20 11:22:25,503 INFO L226 Difference]: Without dead ends: 24441 [2022-11-20 11:22:25,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:22:25,519 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 2421 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:22:25,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 2908 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:22:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24441 states. [2022-11-20 11:22:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24441 to 24411. [2022-11-20 11:22:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24411 states, 17650 states have (on average 1.2992634560906515) internal successors, (22932), 17717 states have internal predecessors, (22932), 4897 states have call successors, (4897), 877 states have call predecessors, (4897), 1863 states have return successors, (10851), 5896 states have call predecessors, (10851), 4891 states have call successors, (10851) [2022-11-20 11:22:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24411 states to 24411 states and 38680 transitions. [2022-11-20 11:22:30,961 INFO L78 Accepts]: Start accepts. Automaton has 24411 states and 38680 transitions. Word has length 224 [2022-11-20 11:22:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:22:30,962 INFO L495 AbstractCegarLoop]: Abstraction has 24411 states and 38680 transitions. [2022-11-20 11:22:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 11:22:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 24411 states and 38680 transitions. [2022-11-20 11:22:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-20 11:22:30,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:22:30,972 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:30,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:22:31,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e98608-88f1-40b5-bdad-2b9f8ecc1d04/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:31,189 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:22:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -680114177, now seen corresponding path program 1 times [2022-11-20 11:22:31,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458484235] [2022-11-20 11:22:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:31,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:22:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:22:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:22:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:22:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:22:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:22:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:22:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:22:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 11:22:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:22:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 11:22:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 11:22:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 11:22:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 11:22:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-20 11:22:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-20 11:22:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:22:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-11-20 11:22:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 11:22:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:22:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-20 11:22:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458484235] [2022-11-20 11:22:32,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458484235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:22:32,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:22:32,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:22:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637356509] [2022-11-20 11:22:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:22:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:22:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:22:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:22:32,667 INFO L87 Difference]: Start difference. First operand 24411 states and 38680 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (34), 8 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 11:22:37,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:22:41,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []