./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF --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 d13c8fd602d503a5b89ef19dbfdd96987c0182e1babba89942a78b68f80ba8e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:10:20,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:10:20,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:10:21,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:10:21,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:10:21,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:10:21,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:10:21,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:10:21,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:10:21,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:10:21,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:10:21,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:10:21,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:10:21,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:10:21,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:10:21,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:10:21,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:10:21,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:10:21,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:10:21,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:10:21,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:10:21,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:10:21,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:10:21,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:10:21,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:10:21,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:10:21,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:10:21,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:10:21,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:10:21,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:10:21,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:10:21,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:10:21,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:10:21,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:10:21,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:10:21,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:10:21,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:10:21,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:10:21,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:10:21,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:10:21,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:10:21,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:10:21,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:10:21,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:10:21,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:10:21,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:10:21,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:10:21,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:10:21,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:10:21,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:10:21,190 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:10:21,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:10:21,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:10:21,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:10:21,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:10:21,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:10:21,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:10:21,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:10:21,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:21,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:10:21,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:10:21,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:10:21,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:10:21,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:10:21,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:10:21,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:10:21,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:10:21,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:10:21,198 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_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13c8fd602d503a5b89ef19dbfdd96987c0182e1babba89942a78b68f80ba8e9 [2021-11-20 07:10:21,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:10:21,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:10:21,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:10:21,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:10:21,517 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:10:21,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 07:10:21,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/data/b7574224e/9cb5c9e1368146078d96a85d4f6fab55/FLAG117c98347 [2021-11-20 07:10:22,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:10:22,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 07:10:22,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/data/b7574224e/9cb5c9e1368146078d96a85d4f6fab55/FLAG117c98347 [2021-11-20 07:10:23,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/data/b7574224e/9cb5c9e1368146078d96a85d4f6fab55 [2021-11-20 07:10:23,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:10:23,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:10:23,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:23,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:10:23,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:10:23,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:23" (1/1) ... [2021-11-20 07:10:23,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5870719b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:23, skipping insertion in model container [2021-11-20 07:10:23,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:10:23" (1/1) ... [2021-11-20 07:10:23,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:10:23,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:10:26,603 WARN L230 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_144f24d7-2bcd-4036-a907-f1c283385f37/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i[389398,389411] [2021-11-20 07:10:26,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:26,817 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:10:27,468 WARN L230 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_144f24d7-2bcd-4036-a907-f1c283385f37/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i[389398,389411] [2021-11-20 07:10:27,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:10:27,673 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:10:27,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27 WrapperNode [2021-11-20 07:10:27,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:10:27,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:27,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:10:27,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:10:27,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:27,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,264 INFO L137 Inliner]: procedures = 425, calls = 5273, calls flagged for inlining = 151, calls inlined = 134, statements flattened = 10143 [2021-11-20 07:10:28,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:10:28,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:10:28,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:10:28,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:10:28,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:10:28,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:10:28,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:10:28,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:10:28,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (1/1) ... [2021-11-20 07:10:28,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:10:28,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:29,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:10:29,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:10:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure timer_open [2021-11-20 07:10:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_open [2021-11-20 07:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure poll_def_tmr [2021-11-20 07:10:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_def_tmr [2021-11-20 07:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure timer_event [2021-11-20 07:10:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_event [2021-11-20 07:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_channels [2021-11-20 07:10:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_channels [2021-11-20 07:10:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 07:10:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 07:10:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 07:10:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 07:10:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 07:10:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 07:10:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_output [2021-11-20 07:10:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_output [2021-11-20 07:10:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~int [2021-11-20 07:10:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~int [2021-11-20 07:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure seq_input_event [2021-11-20 07:10:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_input_event [2021-11-20 07:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_release [2021-11-20 07:10:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_release [2021-11-20 07:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure local_start_dma [2021-11-20 07:10:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure local_start_dma [2021-11-20 07:10:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure translate_bytes [2021-11-20 07:10:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_bytes [2021-11-20 07:10:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-20 07:10:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure seq_copy_to_input [2021-11-20 07:10:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_copy_to_input [2021-11-20 07:10:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 07:10:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 07:10:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_sync [2021-11-20 07:10:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_sync [2021-11-20 07:10:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2021-11-20 07:10:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2021-11-20 07:10:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_launch_output [2021-11-20 07:10:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_launch_output [2021-11-20 07:10:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 07:10:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 07:10:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_soundcard_mutex [2021-11-20 07:10:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_soundcard_mutex [2021-11-20 07:10:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 07:10:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 07:10:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:10:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_space_in_queue [2021-11-20 07:10:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_space_in_queue [2021-11-20 07:10:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure timer_get_time [2021-11-20 07:10:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_get_time [2021-11-20 07:10:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dma [2021-11-20 07:10:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dma [2021-11-20 07:10:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure timer_ioctl [2021-11-20 07:10:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_ioctl [2021-11-20 07:10:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 07:10:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 07:10:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-11-20 07:10:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-11-20 07:10:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 07:10:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mixer_ioctl [2021-11-20 07:10:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mixer_ioctl [2021-11-20 07:10:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 07:10:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure midi_poll [2021-11-20 07:10:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_poll [2021-11-20 07:10:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_arm [2021-11-20 07:10:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_arm [2021-11-20 07:10:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure dma_subdivide [2021-11-20 07:10:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_subdivide [2021-11-20 07:10:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:10:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_activate_recording [2021-11-20 07:10:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_activate_recording [2021-11-20 07:10:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 07:10:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 07:10:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2021-11-20 07:10:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2021-11-20 07:10:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 07:10:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 07:10:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sync [2021-11-20 07:10:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sync [2021-11-20 07:10:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_bits [2021-11-20 07:10:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_bits [2021-11-20 07:10:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sound_special [2021-11-20 07:10:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sound_special [2021-11-20 07:10:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure close_dmap [2021-11-20 07:10:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure close_dmap [2021-11-20 07:10:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_close [2021-11-20 07:10:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_close [2021-11-20 07:10:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-20 07:10:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 07:10:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 07:10:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 07:10:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 07:10:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure timer_arm [2021-11-20 07:10:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_arm [2021-11-20 07:10:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 07:10:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 07:10:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure register_sound_special [2021-11-20 07:10:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure register_sound_special [2021-11-20 07:10:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mmap [2021-11-20 07:10:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mmap [2021-11-20 07:10:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-20 07:10:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-20 07:10:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:10:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure claim_dma_lock [2021-11-20 07:10:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_dma_lock [2021-11-20 07:10:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure timer_close [2021-11-20 07:10:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_close [2021-11-20 07:10:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:10:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:10:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 07:10:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_input [2021-11-20 07:10:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_input [2021-11-20 07:10:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on_timeout [2021-11-20 07:10:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on_timeout [2021-11-20 07:10:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure set_format [2021-11-20 07:10:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure set_format [2021-11-20 07:10:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_reset [2021-11-20 07:10:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_reset [2021-11-20 07:10:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-11-20 07:10:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-11-20 07:10:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure seq_reset [2021-11-20 07:10:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_reset [2021-11-20 07:10:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-20 07:10:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-20 07:10:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure seq_drain_midi_queues [2021-11-20 07:10:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_drain_midi_queues [2021-11-20 07:10:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure dma_ioctl [2021-11-20 07:10:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_ioctl [2021-11-20 07:10:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_soundcard_mutex [2021-11-20 07:10:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_soundcard_mutex [2021-11-20 07:10:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2021-11-20 07:10:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2021-11-20 07:10:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~int [2021-11-20 07:10:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~int [2021-11-20 07:10:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2021-11-20 07:10:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2021-11-20 07:10:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-20 07:10:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-20 07:10:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2021-11-20 07:10:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2021-11-20 07:10:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 07:10:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 07:10:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:10:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:10:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure seq_startplay [2021-11-20 07:10:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_startplay [2021-11-20 07:10:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure clear_dma_ff [2021-11-20 07:10:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_dma_ff [2021-11-20 07:10:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~VOID [2021-11-20 07:10:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~VOID [2021-11-20 07:10:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-20 07:10:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-20 07:10:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-20 07:10:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-20 07:10:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 07:10:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 07:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 07:10:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 07:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 07:10:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 07:10:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 07:10:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-11-20 07:10:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-11-20 07:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure translate_mode [2021-11-20 07:10:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_mode [2021-11-20 07:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get___0 [2021-11-20 07:10:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get___0 [2021-11-20 07:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_move_wrpointer [2021-11-20 07:10:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_move_wrpointer [2021-11-20 07:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 07:10:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 07:10:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset [2021-11-20 07:10:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset [2021-11-20 07:10:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 07:10:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 07:10:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure sound_stop_timer [2021-11-20 07:10:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_stop_timer [2021-11-20 07:10:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks___0 [2021-11-20 07:10:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks___0 [2021-11-20 07:10:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 07:10:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 07:10:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:10:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:10:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-20 07:10:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-20 07:10:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 07:10:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 07:10:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset___0 [2021-11-20 07:10:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset___0 [2021-11-20 07:10:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2021-11-20 07:10:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2021-11-20 07:10:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-20 07:10:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-20 07:10:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2021-11-20 07:10:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2021-11-20 07:10:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:10:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure sound_free_dmap [2021-11-20 07:10:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_free_dmap [2021-11-20 07:10:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-20 07:10:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-20 07:10:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:10:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-20 07:10:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-20 07:10:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_timer [2021-11-20 07:10:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_timer [2021-11-20 07:10:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure midi_outc___0 [2021-11-20 07:10:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_outc___0 [2021-11-20 07:10:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-20 07:10:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-20 07:10:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~int [2021-11-20 07:10:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~int [2021-11-20 07:10:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure dmabuf_timeout [2021-11-20 07:10:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dmabuf_timeout [2021-11-20 07:10:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info___0 [2021-11-20 07:10:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info___0 [2021-11-20 07:10:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:10:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure module_is_live [2021-11-20 07:10:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure module_is_live [2021-11-20 07:10:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 07:10:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 07:10:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure sound_start_dma [2021-11-20 07:10:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_start_dma [2021-11-20 07:10:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_event [2021-11-20 07:10:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_event [2021-11-20 07:10:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 07:10:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 07:10:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-20 07:10:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-20 07:10:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_open [2021-11-20 07:10:29,151 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_open [2021-11-20 07:10:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure do_midi_msg [2021-11-20 07:10:29,151 INFO L138 BoogieDeclarations]: Found implementation of procedure do_midi_msg [2021-11-20 07:10:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on [2021-11-20 07:10:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on [2021-11-20 07:10:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure waitqueue_active [2021-11-20 07:10:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure waitqueue_active [2021-11-20 07:10:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_dmap [2021-11-20 07:10:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_dmap [2021-11-20 07:10:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_fragment [2021-11-20 07:10:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_fragment [2021-11-20 07:10:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_get_time [2021-11-20 07:10:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_get_time [2021-11-20 07:10:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_timer [2021-11-20 07:10:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_timer [2021-11-20 07:10:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_speed [2021-11-20 07:10:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_speed [2021-11-20 07:10:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 07:10:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 07:10:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_residue [2021-11-20 07:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_residue [2021-11-20 07:10:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure sync_output [2021-11-20 07:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_output [2021-11-20 07:10:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:10:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 07:10:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 07:10:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-20 07:10:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-20 07:10:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure open_dmap [2021-11-20 07:10:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure open_dmap [2021-11-20 07:10:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure release_dma_lock [2021-11-20 07:10:29,165 INFO L138 BoogieDeclarations]: Found implementation of procedure release_dma_lock [2021-11-20 07:10:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-20 07:10:29,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-20 07:10:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 07:10:29,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 07:10:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure sound_poll [2021-11-20 07:10:29,166 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_poll [2021-11-20 07:10:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 07:10:29,166 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 07:10:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure do_sequencer_timer [2021-11-20 07:10:29,166 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sequencer_timer [2021-11-20 07:10:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2021-11-20 07:10:29,167 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2021-11-20 07:10:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks [2021-11-20 07:10:29,167 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks [2021-11-20 07:10:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 07:10:29,167 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 07:10:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 07:10:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 07:10:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure request_sound_timer [2021-11-20 07:10:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure request_sound_timer [2021-11-20 07:10:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_get_buffer_pointer [2021-11-20 07:10:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_get_buffer_pointer [2021-11-20 07:10:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure sound_write [2021-11-20 07:10:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_write [2021-11-20 07:10:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure play_event [2021-11-20 07:10:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure play_event [2021-11-20 07:10:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure reorganize_buffers [2021-11-20 07:10:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reorganize_buffers [2021-11-20 07:10:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 07:10:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 07:10:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-20 07:10:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-20 07:10:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:10:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_ioctl [2021-11-20 07:10:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_ioctl [2021-11-20 07:10:30,361 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:10:30,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:10:31,037 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 07:10:31,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3834: assume 0 != ~tmp___1~2;#res := ~ret~3; [2021-11-20 07:10:31,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3834: assume !(0 != ~tmp___1~2);#res := ~ret~3; [2021-11-20 07:10:31,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3801: havoc #t~switch120; [2021-11-20 07:10:31,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3830: assume #t~switch120; [2021-11-20 07:10:31,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3830: assume !#t~switch120;#t~switch120 := true; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3822: assume 0 != ~tmp___0~8;#res := ~ret~3; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3822: assume !(0 != ~tmp___0~8);#res := ~ret~3; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3818: assume #t~switch120; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3818: assume !#t~switch120;#t~switch120 := #t~switch120 || 16 == ~size; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch120;#res := ~ret~3; [2021-11-20 07:10:31,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3814: assume #t~switch120;#res := ~ret~3; [2021-11-20 07:10:31,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3814: assume !#t~switch120;#t~switch120 := #t~switch120 || 10 == ~size; [2021-11-20 07:10:31,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch120;#t~switch120 := #t~switch120 || 2 == ~size; [2021-11-20 07:10:31,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3810: assume #t~switch120;#res := ~ret~3; [2021-11-20 07:10:31,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3810: assume !#t~switch120;#t~switch120 := #t~switch120 || 8 == ~size; [2021-11-20 07:10:31,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3843-1: ~tmp___2~1 := #t~ret123;havoc #t~ret123;#res := (if ~tmp___2~1 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~1 % 18446744073709551616 % 4294967296 else ~tmp___2~1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3843: SUMMARY for call #t~ret123 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3806: assume #t~switch120;#res := ~ret~3; [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3806: assume !#t~switch120;#t~switch120 := #t~switch120 || 4 == ~size; [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3833-1: assume -9223372036854775808 <= #t~ret122 && #t~ret122 <= 9223372036854775807;~tmp___1~2 := #t~ret122;havoc #t~ret122; [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3833: SUMMARY for call #t~ret122 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2021-11-20 07:10:31,165 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3821-1: assume -9223372036854775808 <= #t~ret121 && #t~ret121 <= 9223372036854775807;~tmp___0~8 := #t~ret121;havoc #t~ret121; [2021-11-20 07:10:31,166 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3821: SUMMARY for call #t~ret121 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2021-11-20 07:10:31,166 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3842: assume #t~switch120; [2021-11-20 07:10:31,166 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3842: assume !#t~switch120; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3736: havoc __copy_from_user_#t~switch115#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3742: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3742: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 4 == __copy_from_user_~size#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3747: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3747: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 8 == __copy_from_user_~size#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3752: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,978 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3752: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 10 == __copy_from_user_~size#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3757: assume __copy_from_user_#t~switch115#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3757: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 16 == __copy_from_user_~size#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3761-1: assume -9223372036854775808 <= __copy_from_user_#t~ret116#1 && __copy_from_user_#t~ret116#1 <= 9223372036854775807;__copy_from_user_~tmp___0~7#1 := __copy_from_user_#t~ret116#1;havoc __copy_from_user_#t~ret116#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3761: SUMMARY for call __copy_from_user_#t~ret116#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3762: assume 0 != __copy_from_user_~tmp___0~7#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3762: assume !(0 != __copy_from_user_~tmp___0~7#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3770: assume __copy_from_user_#t~switch115#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3770: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := true; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3774: SUMMARY for call __copy_from_user_#t~ret117#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3774-1: assume -9223372036854775808 <= __copy_from_user_#t~ret117#1 && __copy_from_user_#t~ret117#1 <= 9223372036854775807;__copy_from_user_~tmp___1~1#1 := __copy_from_user_#t~ret117#1;havoc __copy_from_user_#t~ret117#1; [2021-11-20 07:10:40,979 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3775: assume 0 != __copy_from_user_~tmp___1~1#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3775: assume !(0 != __copy_from_user_~tmp___1~1#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3783: assume __copy_from_user_#t~switch115#1; [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3783: assume !__copy_from_user_#t~switch115#1; [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3784: SUMMARY for call __copy_from_user_#t~ret118#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L3784-1: __copy_from_user_~tmp___2~0#1 := __copy_from_user_#t~ret118#1;havoc __copy_from_user_#t~ret118#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##704: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 2 == __copy_from_user_~size#1; [2021-11-20 07:10:40,980 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##703: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2021-11-20 07:10:41,091 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:10:41,137 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:10:41,137 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:10:41,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:41 BoogieIcfgContainer [2021-11-20 07:10:41,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:10:41,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:10:41,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:10:41,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:10:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:10:23" (1/3) ... [2021-11-20 07:10:41,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84f78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:41, skipping insertion in model container [2021-11-20 07:10:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:10:27" (2/3) ... [2021-11-20 07:10:41,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e84f78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:10:41, skipping insertion in model container [2021-11-20 07:10:41,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:10:41" (3/3) ... [2021-11-20 07:10:41,153 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-20 07:10:41,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:10:41,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:10:41,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:10:41,231 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:10:41,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:10:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 3838 states, 2919 states have (on average 1.5022267899965742) internal successors, (4385), 3023 states have internal predecessors, (4385), 781 states have call successors, (781), 137 states have call predecessors, (781), 136 states have return successors, (773), 745 states have call predecessors, (773), 773 states have call successors, (773) [2021-11-20 07:10:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-20 07:10:41,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:10:41,336 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:41,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:10:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1391587723, now seen corresponding path program 1 times [2021-11-20 07:10:41,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:41,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595948046] [2021-11-20 07:10:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:10:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:10:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:10:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:10:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:10:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:10:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:10:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:10:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:10:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:10:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:10:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:10:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:10:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:10:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:10:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-20 07:10:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 07:10:42,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:42,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595948046] [2021-11-20 07:10:42,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595948046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:42,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:42,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:10:42,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307458802] [2021-11-20 07:10:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:42,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:10:42,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:10:42,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:10:42,716 INFO L87 Difference]: Start difference. First operand has 3838 states, 2919 states have (on average 1.5022267899965742) internal successors, (4385), 3023 states have internal predecessors, (4385), 781 states have call successors, (781), 137 states have call predecessors, (781), 136 states have return successors, (773), 745 states have call predecessors, (773), 773 states have call successors, (773) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:10:54,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:56,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:02,826 INFO L93 Difference]: Finished difference Result 8367 states and 13217 transitions. [2021-11-20 07:11:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:11:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2021-11-20 07:11:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:02,905 INFO L225 Difference]: With dead ends: 8367 [2021-11-20 07:11:02,905 INFO L226 Difference]: Without dead ends: 4519 [2021-11-20 07:11:02,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:02,943 INFO L933 BasicCegarLoop]: 5467 mSDtfsCounter, 3639 mSDsluCounter, 7447 mSDsCounter, 0 mSdLazyCounter, 4574 mSolverCounterSat, 2309 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3690 SdHoareTripleChecker+Valid, 12914 SdHoareTripleChecker+Invalid, 6885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2309 IncrementalHoareTripleChecker+Valid, 4574 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:02,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3690 Valid, 12914 Invalid, 6885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2309 Valid, 4574 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2021-11-20 07:11:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2021-11-20 07:11:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 3823. [2021-11-20 07:11:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 2914 states have (on average 1.4989704873026768) internal successors, (4368), 3008 states have internal predecessors, (4368), 773 states have call successors, (773), 136 states have call predecessors, (773), 135 states have return successors, (769), 741 states have call predecessors, (769), 769 states have call successors, (769) [2021-11-20 07:11:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5910 transitions. [2021-11-20 07:11:03,400 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5910 transitions. Word has length 192 [2021-11-20 07:11:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:03,401 INFO L470 AbstractCegarLoop]: Abstraction has 3823 states and 5910 transitions. [2021-11-20 07:11:03,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:11:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5910 transitions. [2021-11-20 07:11:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-20 07:11:03,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:03,413 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:03,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:11:03,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:11:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1053851753, now seen corresponding path program 1 times [2021-11-20 07:11:03,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:03,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943538130] [2021-11-20 07:11:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:03,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:11:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:11:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:11:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:11:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:11:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:11:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:11:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:11:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:11:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:11:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:11:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:11:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:11:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-20 07:11:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 07:11:04,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943538130] [2021-11-20 07:11:04,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943538130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:04,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:04,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:11:04,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238538752] [2021-11-20 07:11:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:04,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:04,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:04,169 INFO L87 Difference]: Start difference. First operand 3823 states and 5910 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:11:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:18,437 INFO L93 Difference]: Finished difference Result 9651 states and 15121 transitions. [2021-11-20 07:11:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2021-11-20 07:11:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:18,494 INFO L225 Difference]: With dead ends: 9651 [2021-11-20 07:11:18,494 INFO L226 Difference]: Without dead ends: 5857 [2021-11-20 07:11:18,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:11:18,515 INFO L933 BasicCegarLoop]: 5654 mSDtfsCounter, 9663 mSDsluCounter, 7687 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 4665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9834 SdHoareTripleChecker+Valid, 13341 SdHoareTripleChecker+Invalid, 8362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4665 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:18,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9834 Valid, 13341 Invalid, 8362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4665 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2021-11-20 07:11:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-11-20 07:11:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 4938. [2021-11-20 07:11:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 3763 states have (on average 1.495083709806006) internal successors, (5626), 3894 states have internal predecessors, (5626), 979 states have call successors, (979), 196 states have call predecessors, (979), 195 states have return successors, (975), 931 states have call predecessors, (975), 975 states have call successors, (975) [2021-11-20 07:11:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7580 transitions. [2021-11-20 07:11:18,795 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7580 transitions. Word has length 192 [2021-11-20 07:11:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:18,799 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 7580 transitions. [2021-11-20 07:11:18,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:11:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7580 transitions. [2021-11-20 07:11:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-20 07:11:18,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:18,804 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:18,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:11:18,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:11:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1833513696, now seen corresponding path program 1 times [2021-11-20 07:11:18,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:18,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880874345] [2021-11-20 07:11:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:18,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:11:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:11:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:11:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:11:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:11:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:11:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:11:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:11:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:11:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:11:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:11:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:11:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:11:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:11:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 07:11:19,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:19,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880874345] [2021-11-20 07:11:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880874345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:19,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:11:19,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757300138] [2021-11-20 07:11:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:19,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:19,529 INFO L87 Difference]: Start difference. First operand 4938 states and 7580 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 07:11:29,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:33,408 INFO L93 Difference]: Finished difference Result 10758 states and 16782 transitions. [2021-11-20 07:11:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:11:33,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 202 [2021-11-20 07:11:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:33,456 INFO L225 Difference]: With dead ends: 10758 [2021-11-20 07:11:33,456 INFO L226 Difference]: Without dead ends: 5849 [2021-11-20 07:11:33,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:11:33,483 INFO L933 BasicCegarLoop]: 5412 mSDtfsCounter, 9793 mSDsluCounter, 4997 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 3167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10296 SdHoareTripleChecker+Valid, 10409 SdHoareTripleChecker+Invalid, 6495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3167 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:33,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10296 Valid, 10409 Invalid, 6495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3167 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2021-11-20 07:11:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2021-11-20 07:11:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 4938. [2021-11-20 07:11:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 3763 states have (on average 1.4945522189742226) internal successors, (5624), 3894 states have internal predecessors, (5624), 979 states have call successors, (979), 196 states have call predecessors, (979), 195 states have return successors, (975), 931 states have call predecessors, (975), 975 states have call successors, (975) [2021-11-20 07:11:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7578 transitions. [2021-11-20 07:11:33,902 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7578 transitions. Word has length 202 [2021-11-20 07:11:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:33,903 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 7578 transitions. [2021-11-20 07:11:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 07:11:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7578 transitions. [2021-11-20 07:11:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-20 07:11:33,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:33,910 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:33,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:11:33,911 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:11:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash 245165794, now seen corresponding path program 1 times [2021-11-20 07:11:33,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101352235] [2021-11-20 07:11:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:33,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:11:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:11:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:11:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:11:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:11:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:11:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:11:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:11:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:11:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:11:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:11:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:11:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:11:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:11:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 07:11:34,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:34,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101352235] [2021-11-20 07:11:34,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101352235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:34,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:34,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:11:34,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69444485] [2021-11-20 07:11:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:34,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:34,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:34,570 INFO L87 Difference]: Start difference. First operand 4938 states and 7578 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:11:46,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:50,394 INFO L93 Difference]: Finished difference Result 5851 states and 9243 transitions. [2021-11-20 07:11:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:11:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 202 [2021-11-20 07:11:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:50,441 INFO L225 Difference]: With dead ends: 5851 [2021-11-20 07:11:50,441 INFO L226 Difference]: Without dead ends: 5848 [2021-11-20 07:11:50,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:11:50,445 INFO L933 BasicCegarLoop]: 5422 mSDtfsCounter, 9336 mSDsluCounter, 7412 mSDsCounter, 0 mSdLazyCounter, 4609 mSolverCounterSat, 3037 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9830 SdHoareTripleChecker+Valid, 12834 SdHoareTripleChecker+Invalid, 7647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3037 IncrementalHoareTripleChecker+Valid, 4609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:50,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9830 Valid, 12834 Invalid, 7647 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3037 Valid, 4609 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2021-11-20 07:11:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2021-11-20 07:11:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4937. [2021-11-20 07:11:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 3763 states have (on average 1.4942864735583312) internal successors, (5623), 3893 states have internal predecessors, (5623), 978 states have call successors, (978), 196 states have call predecessors, (978), 195 states have return successors, (975), 931 states have call predecessors, (975), 975 states have call successors, (975) [2021-11-20 07:11:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 7576 transitions. [2021-11-20 07:11:50,725 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 7576 transitions. Word has length 202 [2021-11-20 07:11:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:50,727 INFO L470 AbstractCegarLoop]: Abstraction has 4937 states and 7576 transitions. [2021-11-20 07:11:50,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:11:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 7576 transitions. [2021-11-20 07:11:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-20 07:11:50,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:50,731 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:50,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:11:50,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:11:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -990907888, now seen corresponding path program 1 times [2021-11-20 07:11:50,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319970211] [2021-11-20 07:11:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:11:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:11:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:11:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:11:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:11:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:11:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:11:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:11:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:11:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:11:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:11:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:11:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:11:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:11:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 07:11:51,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:51,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319970211] [2021-11-20 07:11:51,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319970211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:51,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:51,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:11:51,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730275427] [2021-11-20 07:11:51,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:51,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:51,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:51,294 INFO L87 Difference]: Start difference. First operand 4937 states and 7576 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:12:04,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:10,403 INFO L93 Difference]: Finished difference Result 9115 states and 14234 transitions. [2021-11-20 07:12:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:12:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 203 [2021-11-20 07:12:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:10,475 INFO L225 Difference]: With dead ends: 9115 [2021-11-20 07:12:10,475 INFO L226 Difference]: Without dead ends: 9027 [2021-11-20 07:12:10,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:12:10,484 INFO L933 BasicCegarLoop]: 6032 mSDtfsCounter, 8307 mSDsluCounter, 10019 mSDsCounter, 0 mSdLazyCounter, 5430 mSolverCounterSat, 3715 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8534 SdHoareTripleChecker+Valid, 16051 SdHoareTripleChecker+Invalid, 9146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3715 IncrementalHoareTripleChecker+Valid, 5430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:10,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8534 Valid, 16051 Invalid, 9146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3715 Valid, 5430 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2021-11-20 07:12:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2021-11-20 07:12:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 7623. [2021-11-20 07:12:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7623 states, 5781 states have (on average 1.4871129562359453) internal successors, (8597), 6011 states have internal predecessors, (8597), 1506 states have call successors, (1506), 338 states have call predecessors, (1506), 335 states have return successors, (1505), 1407 states have call predecessors, (1505), 1503 states have call successors, (1505) [2021-11-20 07:12:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7623 states to 7623 states and 11608 transitions. [2021-11-20 07:12:11,018 INFO L78 Accepts]: Start accepts. Automaton has 7623 states and 11608 transitions. Word has length 203 [2021-11-20 07:12:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:11,019 INFO L470 AbstractCegarLoop]: Abstraction has 7623 states and 11608 transitions. [2021-11-20 07:12:11,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:12:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7623 states and 11608 transitions. [2021-11-20 07:12:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-20 07:12:11,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:11,031 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 07:12:11,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:12:11,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:12:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1664573996, now seen corresponding path program 1 times [2021-11-20 07:12:11,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:11,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615573238] [2021-11-20 07:12:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:11,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:12:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:12:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:12:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:12:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:12:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:12:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:12:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:12:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:12:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:12:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:12:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:12:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:12:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:12:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-20 07:12:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-20 07:12:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-20 07:12:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-20 07:12:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-20 07:12:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-11-20 07:12:11,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:11,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615573238] [2021-11-20 07:12:11,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615573238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:11,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:11,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:12:11,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522294767] [2021-11-20 07:12:11,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:12:11,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:12:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:12:11,755 INFO L87 Difference]: Start difference. First operand 7623 states and 11608 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 07:12:16,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:12:19,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:12:39,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:41,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:43,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:46,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:56,102 INFO L93 Difference]: Finished difference Result 16645 states and 25712 transitions. [2021-11-20 07:12:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:12:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2021-11-20 07:12:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:56,155 INFO L225 Difference]: With dead ends: 16645 [2021-11-20 07:12:56,155 INFO L226 Difference]: Without dead ends: 9033 [2021-11-20 07:12:56,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:12:56,191 INFO L933 BasicCegarLoop]: 5185 mSDtfsCounter, 6440 mSDsluCounter, 19691 mSDsCounter, 0 mSdLazyCounter, 19520 mSolverCounterSat, 3639 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6726 SdHoareTripleChecker+Valid, 24876 SdHoareTripleChecker+Invalid, 23165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3639 IncrementalHoareTripleChecker+Valid, 19520 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:56,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6726 Valid, 24876 Invalid, 23165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3639 Valid, 19520 Invalid, 6 Unknown, 0 Unchecked, 43.5s Time] [2021-11-20 07:12:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2021-11-20 07:12:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 7618. [2021-11-20 07:12:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7618 states, 5779 states have (on average 1.4865893753244506) internal successors, (8591), 6008 states have internal predecessors, (8591), 1504 states have call successors, (1504), 336 states have call predecessors, (1504), 334 states have return successors, (1505), 1404 states have call predecessors, (1505), 1501 states have call successors, (1505) [2021-11-20 07:12:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7618 states to 7618 states and 11600 transitions. [2021-11-20 07:12:56,692 INFO L78 Accepts]: Start accepts. Automaton has 7618 states and 11600 transitions. Word has length 268 [2021-11-20 07:12:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:56,693 INFO L470 AbstractCegarLoop]: Abstraction has 7618 states and 11600 transitions. [2021-11-20 07:12:56,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 07:12:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7618 states and 11600 transitions. [2021-11-20 07:12:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-20 07:12:56,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:56,704 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 07:12:56,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:12:56,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:12:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 183155597, now seen corresponding path program 1 times [2021-11-20 07:12:56,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:56,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137325250] [2021-11-20 07:12:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:56,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:12:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:12:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:12:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:12:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:12:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:12:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:12:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:12:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:12:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:12:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:12:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:12:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:12:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:12:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:12:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-20 07:12:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-20 07:12:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-20 07:12:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-20 07:12:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-20 07:12:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-20 07:12:57,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137325250] [2021-11-20 07:12:57,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137325250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:57,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:57,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:12:57,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525827998] [2021-11-20 07:12:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:57,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:12:57,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:12:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:12:57,408 INFO L87 Difference]: Start difference. First operand 7618 states and 11600 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:13:17,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:13:19,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:13:21,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:13:26,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:13:29,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:13:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:36,814 INFO L93 Difference]: Finished difference Result 16792 states and 25986 transitions. [2021-11-20 07:13:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:13:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 273 [2021-11-20 07:13:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:36,850 INFO L225 Difference]: With dead ends: 16792 [2021-11-20 07:13:36,850 INFO L226 Difference]: Without dead ends: 9203 [2021-11-20 07:13:36,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:13:36,872 INFO L933 BasicCegarLoop]: 5487 mSDtfsCounter, 9825 mSDsluCounter, 10687 mSDsCounter, 0 mSdLazyCounter, 13796 mSolverCounterSat, 4358 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10110 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 18159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4358 IncrementalHoareTripleChecker+Valid, 13796 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:36,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10110 Valid, 16174 Invalid, 18159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4358 Valid, 13796 Invalid, 5 Unknown, 0 Unchecked, 38.7s Time] [2021-11-20 07:13:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9203 states. [2021-11-20 07:13:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9203 to 7618. [2021-11-20 07:13:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7618 states, 5779 states have (on average 1.485897214050874) internal successors, (8587), 6008 states have internal predecessors, (8587), 1504 states have call successors, (1504), 336 states have call predecessors, (1504), 334 states have return successors, (1505), 1404 states have call predecessors, (1505), 1501 states have call successors, (1505) [2021-11-20 07:13:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7618 states to 7618 states and 11596 transitions. [2021-11-20 07:13:37,263 INFO L78 Accepts]: Start accepts. Automaton has 7618 states and 11596 transitions. Word has length 273 [2021-11-20 07:13:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:37,264 INFO L470 AbstractCegarLoop]: Abstraction has 7618 states and 11596 transitions. [2021-11-20 07:13:37,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:13:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7618 states and 11596 transitions. [2021-11-20 07:13:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-20 07:13:37,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:37,276 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 07:13:37,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:13:37,277 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 140764322, now seen corresponding path program 1 times [2021-11-20 07:13:37,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:37,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440724604] [2021-11-20 07:13:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:37,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:13:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:13:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:13:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:13:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:13:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:13:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:13:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:13:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:13:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:13:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:13:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:13:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:13:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:13:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:13:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:13:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:13:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 07:13:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-20 07:13:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-20 07:13:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-20 07:13:37,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440724604] [2021-11-20 07:13:37,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440724604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:37,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:37,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:13:37,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619499996] [2021-11-20 07:13:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:37,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:13:37,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:37,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:13:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:13:37,899 INFO L87 Difference]: Start difference. First operand 7618 states and 11596 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 07:13:47,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:13:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:51,488 INFO L93 Difference]: Finished difference Result 16611 states and 25658 transitions. [2021-11-20 07:13:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:13:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 276 [2021-11-20 07:13:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:51,533 INFO L225 Difference]: With dead ends: 16611 [2021-11-20 07:13:51,533 INFO L226 Difference]: Without dead ends: 9022 [2021-11-20 07:13:51,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:13:51,557 INFO L933 BasicCegarLoop]: 5177 mSDtfsCounter, 13639 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 3749 mSolverCounterSat, 6422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14075 SdHoareTripleChecker+Valid, 9016 SdHoareTripleChecker+Invalid, 10171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6422 IncrementalHoareTripleChecker+Valid, 3749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:51,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14075 Valid, 9016 Invalid, 10171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6422 Valid, 3749 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2021-11-20 07:13:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2021-11-20 07:13:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 7618. [2021-11-20 07:13:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7618 states, 5779 states have (on average 1.485205052777297) internal successors, (8583), 6008 states have internal predecessors, (8583), 1504 states have call successors, (1504), 336 states have call predecessors, (1504), 334 states have return successors, (1505), 1404 states have call predecessors, (1505), 1501 states have call successors, (1505) [2021-11-20 07:13:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7618 states to 7618 states and 11592 transitions. [2021-11-20 07:13:51,979 INFO L78 Accepts]: Start accepts. Automaton has 7618 states and 11592 transitions. Word has length 276 [2021-11-20 07:13:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:51,980 INFO L470 AbstractCegarLoop]: Abstraction has 7618 states and 11592 transitions. [2021-11-20 07:13:51,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 07:13:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7618 states and 11592 transitions. [2021-11-20 07:13:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-20 07:13:51,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:51,991 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 07:13:51,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:13:51,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:51,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1027987168, now seen corresponding path program 1 times [2021-11-20 07:13:51,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583070321] [2021-11-20 07:13:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:51,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:13:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:13:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:13:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:13:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:13:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:13:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:13:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:13:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:13:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:13:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:13:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:13:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:13:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:13:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:13:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:13:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:13:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:13:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 07:13:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-20 07:13:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-20 07:13:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-20 07:13:52,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:52,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583070321] [2021-11-20 07:13:52,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583070321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:52,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:52,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:13:52,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772015520] [2021-11-20 07:13:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:52,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:13:52,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:13:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:13:52,650 INFO L87 Difference]: Start difference. First operand 7618 states and 11592 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 07:14:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:20,258 INFO L93 Difference]: Finished difference Result 21052 states and 32464 transitions. [2021-11-20 07:14:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:14:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 276 [2021-11-20 07:14:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:20,322 INFO L225 Difference]: With dead ends: 21052 [2021-11-20 07:14:20,322 INFO L226 Difference]: Without dead ends: 13463 [2021-11-20 07:14:20,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:14:20,346 INFO L933 BasicCegarLoop]: 6891 mSDtfsCounter, 11293 mSDsluCounter, 8795 mSDsCounter, 0 mSdLazyCounter, 11169 mSolverCounterSat, 6369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11792 SdHoareTripleChecker+Valid, 15686 SdHoareTripleChecker+Invalid, 17538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6369 IncrementalHoareTripleChecker+Valid, 11169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:20,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11792 Valid, 15686 Invalid, 17538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6369 Valid, 11169 Invalid, 0 Unknown, 0 Unchecked, 26.7s Time] [2021-11-20 07:14:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13463 states. [2021-11-20 07:14:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13463 to 11231. [2021-11-20 07:14:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11231 states, 8457 states have (on average 1.4730992077568879) internal successors, (12458), 8812 states have internal predecessors, (12458), 2250 states have call successors, (2250), 526 states have call predecessors, (2250), 523 states have return successors, (2251), 2091 states have call predecessors, (2251), 2247 states have call successors, (2251) [2021-11-20 07:14:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11231 states to 11231 states and 16959 transitions. [2021-11-20 07:14:20,979 INFO L78 Accepts]: Start accepts. Automaton has 11231 states and 16959 transitions. Word has length 276 [2021-11-20 07:14:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:20,981 INFO L470 AbstractCegarLoop]: Abstraction has 11231 states and 16959 transitions. [2021-11-20 07:14:20,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 07:14:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11231 states and 16959 transitions. [2021-11-20 07:14:20,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-20 07:14:20,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:20,992 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 07:14:20,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:14:20,993 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:14:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash -508392981, now seen corresponding path program 1 times [2021-11-20 07:14:20,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:20,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343580068] [2021-11-20 07:14:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:20,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:14:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:14:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:14:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:14:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:14:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:14:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:14:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:14:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:14:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:14:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:14:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:14:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:14:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:14:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:14:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:14:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:14:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-20 07:14:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-20 07:14:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-20 07:14:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-20 07:14:21,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:21,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343580068] [2021-11-20 07:14:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343580068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:21,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:21,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:14:21,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984844109] [2021-11-20 07:14:21,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:14:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:14:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:14:21,573 INFO L87 Difference]: Start difference. First operand 11231 states and 16959 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:14:38,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:14:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:44,104 INFO L93 Difference]: Finished difference Result 24650 states and 37788 transitions. [2021-11-20 07:14:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:14:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 275 [2021-11-20 07:14:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:44,173 INFO L225 Difference]: With dead ends: 24650 [2021-11-20 07:14:44,173 INFO L226 Difference]: Without dead ends: 13448 [2021-11-20 07:14:44,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:14:44,205 INFO L933 BasicCegarLoop]: 6438 mSDtfsCounter, 14576 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 7541 mSolverCounterSat, 7490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15139 SdHoareTripleChecker+Valid, 11263 SdHoareTripleChecker+Invalid, 15032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7490 IncrementalHoareTripleChecker+Valid, 7541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:44,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15139 Valid, 11263 Invalid, 15032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7490 Valid, 7541 Invalid, 1 Unknown, 0 Unchecked, 21.6s Time] [2021-11-20 07:14:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13448 states. [2021-11-20 07:14:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13448 to 11221. [2021-11-20 07:14:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11221 states, 8452 states have (on average 1.4729058211074302) internal successors, (12449), 8804 states have internal predecessors, (12449), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 521 states have return successors, (2237), 2090 states have call predecessors, (2237), 2237 states have call successors, (2237) [2021-11-20 07:14:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11221 states to 11221 states and 16933 transitions. [2021-11-20 07:14:44,968 INFO L78 Accepts]: Start accepts. Automaton has 11221 states and 16933 transitions. Word has length 275 [2021-11-20 07:14:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:44,969 INFO L470 AbstractCegarLoop]: Abstraction has 11221 states and 16933 transitions. [2021-11-20 07:14:44,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (26), 7 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:14:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11221 states and 16933 transitions. [2021-11-20 07:14:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-20 07:14:45,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:45,007 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 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] [2021-11-20 07:14:45,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:14:45,008 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:14:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1227622379, now seen corresponding path program 1 times [2021-11-20 07:14:45,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:45,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342183362] [2021-11-20 07:14:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:45,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:14:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:14:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:14:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:14:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:14:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:14:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:14:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:14:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:14:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:14:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:14:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:14:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:14:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:14:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:14:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:14:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:14:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:14:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-20 07:14:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-20 07:14:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-20 07:14:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-11-20 07:14:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-20 07:14:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-11-20 07:14:45,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:45,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342183362] [2021-11-20 07:14:45,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342183362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:45,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:45,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:14:45,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489604536] [2021-11-20 07:14:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:45,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:14:45,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:14:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:14:45,589 INFO L87 Difference]: Start difference. First operand 11221 states and 16933 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:15:11,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:15:13,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:15:16,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:15:19,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:15:26,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:15:28,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 07:15:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:36,181 INFO L93 Difference]: Finished difference Result 29593 states and 45379 transitions. [2021-11-20 07:15:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:15:36,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 316 [2021-11-20 07:15:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:36,275 INFO L225 Difference]: With dead ends: 29593 [2021-11-20 07:15:36,275 INFO L226 Difference]: Without dead ends: 18401 [2021-11-20 07:15:36,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:15:36,311 INFO L933 BasicCegarLoop]: 8413 mSDtfsCounter, 10445 mSDsluCounter, 15441 mSDsCounter, 0 mSdLazyCounter, 17879 mSolverCounterSat, 6121 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10867 SdHoareTripleChecker+Valid, 23854 SdHoareTripleChecker+Invalid, 24004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6121 IncrementalHoareTripleChecker+Valid, 17879 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:36,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10867 Valid, 23854 Invalid, 24004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6121 Valid, 17879 Invalid, 4 Unknown, 0 Unchecked, 49.2s Time] [2021-11-20 07:15:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18401 states. [2021-11-20 07:15:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18401 to 11223. [2021-11-20 07:15:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11223 states, 8454 states have (on average 1.4726756564939674) internal successors, (12450), 8806 states have internal predecessors, (12450), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 521 states have return successors, (2237), 2090 states have call predecessors, (2237), 2237 states have call successors, (2237) [2021-11-20 07:15:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11223 states to 11223 states and 16934 transitions. [2021-11-20 07:15:37,128 INFO L78 Accepts]: Start accepts. Automaton has 11223 states and 16934 transitions. Word has length 316 [2021-11-20 07:15:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:37,129 INFO L470 AbstractCegarLoop]: Abstraction has 11223 states and 16934 transitions. [2021-11-20 07:15:37,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:15:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 11223 states and 16934 transitions. [2021-11-20 07:15:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-20 07:15:37,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:37,171 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:15:37,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:15:37,171 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1512775099, now seen corresponding path program 1 times [2021-11-20 07:15:37,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:37,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167421623] [2021-11-20 07:15:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:37,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:15:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:15:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:15:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:15:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:15:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:15:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:15:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:15:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:15:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:15:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:15:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:15:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:15:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:15:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:15:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:15:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:15:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-20 07:15:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-20 07:15:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-20 07:15:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-11-20 07:15:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-20 07:15:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-20 07:15:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-11-20 07:15:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-11-20 07:15:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-11-20 07:15:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2021-11-20 07:15:37,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167421623] [2021-11-20 07:15:37,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167421623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:37,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:37,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:15:37,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536301104] [2021-11-20 07:15:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:37,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:15:37,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:15:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:15:37,875 INFO L87 Difference]: Start difference. First operand 11223 states and 16934 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:15:49,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:15:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:55,543 INFO L93 Difference]: Finished difference Result 24640 states and 37745 transitions. [2021-11-20 07:15:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:15:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 345 [2021-11-20 07:15:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:55,607 INFO L225 Difference]: With dead ends: 24640 [2021-11-20 07:15:55,607 INFO L226 Difference]: Without dead ends: 13446 [2021-11-20 07:15:55,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:15:55,638 INFO L933 BasicCegarLoop]: 5208 mSDtfsCounter, 8428 mSDsluCounter, 6974 mSDsCounter, 0 mSdLazyCounter, 6758 mSolverCounterSat, 4823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8717 SdHoareTripleChecker+Valid, 12182 SdHoareTripleChecker+Invalid, 11581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4823 IncrementalHoareTripleChecker+Valid, 6758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:55,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8717 Valid, 12182 Invalid, 11581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4823 Valid, 6758 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2021-11-20 07:15:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13446 states. [2021-11-20 07:15:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13446 to 11224. [2021-11-20 07:15:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11224 states, 8455 states have (on average 1.4726197516262567) internal successors, (12451), 8807 states have internal predecessors, (12451), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 521 states have return successors, (2237), 2090 states have call predecessors, (2237), 2237 states have call successors, (2237) [2021-11-20 07:15:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11224 states to 11224 states and 16935 transitions. [2021-11-20 07:15:56,425 INFO L78 Accepts]: Start accepts. Automaton has 11224 states and 16935 transitions. Word has length 345 [2021-11-20 07:15:56,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:56,426 INFO L470 AbstractCegarLoop]: Abstraction has 11224 states and 16935 transitions. [2021-11-20 07:15:56,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:15:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11224 states and 16935 transitions. [2021-11-20 07:15:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-20 07:15:56,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:56,485 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:15:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:15:56,486 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:15:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash -847793526, now seen corresponding path program 1 times [2021-11-20 07:15:56,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:56,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482657535] [2021-11-20 07:15:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:56,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:15:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:15:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:15:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:15:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:15:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:15:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:15:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:15:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:15:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:15:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:15:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:15:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:15:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:15:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:15:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:15:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:15:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:15:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-20 07:15:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-20 07:15:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-20 07:15:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-20 07:15:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-20 07:15:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-20 07:15:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-20 07:15:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-11-20 07:15:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-20 07:15:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-11-20 07:15:57,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:57,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482657535] [2021-11-20 07:15:57,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482657535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:15:57,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:15:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:15:57,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708075678] [2021-11-20 07:15:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:15:57,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:15:57,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:15:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:15:57,052 INFO L87 Difference]: Start difference. First operand 11224 states and 16935 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:16:09,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:16:11,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:16:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:22,243 INFO L93 Difference]: Finished difference Result 26652 states and 41185 transitions. [2021-11-20 07:16:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:16:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 347 [2021-11-20 07:16:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:22,323 INFO L225 Difference]: With dead ends: 26652 [2021-11-20 07:16:22,324 INFO L226 Difference]: Without dead ends: 15457 [2021-11-20 07:16:22,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:16:22,362 INFO L933 BasicCegarLoop]: 6519 mSDtfsCounter, 8068 mSDsluCounter, 10663 mSDsCounter, 0 mSdLazyCounter, 9625 mSolverCounterSat, 3673 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8717 SdHoareTripleChecker+Valid, 17182 SdHoareTripleChecker+Invalid, 13299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3673 IncrementalHoareTripleChecker+Valid, 9625 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:22,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8717 Valid, 17182 Invalid, 13299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3673 Valid, 9625 Invalid, 1 Unknown, 0 Unchecked, 24.1s Time] [2021-11-20 07:16:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15457 states. [2021-11-20 07:16:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15457 to 11230. [2021-11-20 07:16:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11230 states, 8461 states have (on average 1.4722845999290863) internal successors, (12457), 8813 states have internal predecessors, (12457), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 521 states have return successors, (2237), 2090 states have call predecessors, (2237), 2237 states have call successors, (2237) [2021-11-20 07:16:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 16941 transitions. [2021-11-20 07:16:23,148 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 16941 transitions. Word has length 347 [2021-11-20 07:16:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:23,148 INFO L470 AbstractCegarLoop]: Abstraction has 11230 states and 16941 transitions. [2021-11-20 07:16:23,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:16:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 16941 transitions. [2021-11-20 07:16:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-20 07:16:23,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:23,176 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:16:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:16:23,176 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:16:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1357266616, now seen corresponding path program 1 times [2021-11-20 07:16:23,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:23,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453194583] [2021-11-20 07:16:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:23,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:16:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:16:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:16:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:16:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:16:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:16:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:16:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:16:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:16:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:16:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:16:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:16:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:16:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:16:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:16:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:16:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-20 07:16:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-20 07:16:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-20 07:16:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-20 07:16:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-20 07:16:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-20 07:16:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-20 07:16:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-20 07:16:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-11-20 07:16:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-20 07:16:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2021-11-20 07:16:23,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:23,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453194583] [2021-11-20 07:16:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453194583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:23,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:23,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:16:23,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971884426] [2021-11-20 07:16:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:16:23,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:16:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:16:23,789 INFO L87 Difference]: Start difference. First operand 11230 states and 16941 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:16:34,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:16:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:41,392 INFO L93 Difference]: Finished difference Result 24695 states and 37817 transitions. [2021-11-20 07:16:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:16:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 347 [2021-11-20 07:16:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:41,436 INFO L225 Difference]: With dead ends: 24695 [2021-11-20 07:16:41,436 INFO L226 Difference]: Without dead ends: 13494 [2021-11-20 07:16:41,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:16:41,464 INFO L933 BasicCegarLoop]: 5198 mSDtfsCounter, 8441 mSDsluCounter, 6963 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 4836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8729 SdHoareTripleChecker+Valid, 12161 SdHoareTripleChecker+Invalid, 11607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4836 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:41,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8729 Valid, 12161 Invalid, 11607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4836 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2021-11-20 07:16:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13494 states. [2021-11-20 07:16:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13494 to 11236. [2021-11-20 07:16:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 8467 states have (on average 1.4719499232313689) internal successors, (12463), 8819 states have internal predecessors, (12463), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 521 states have return successors, (2237), 2090 states have call predecessors, (2237), 2237 states have call successors, (2237) [2021-11-20 07:16:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 16947 transitions. [2021-11-20 07:16:42,132 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 16947 transitions. Word has length 347 [2021-11-20 07:16:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:42,133 INFO L470 AbstractCegarLoop]: Abstraction has 11236 states and 16947 transitions. [2021-11-20 07:16:42,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (31), 6 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 07:16:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 16947 transitions. [2021-11-20 07:16:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-20 07:16:42,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:42,156 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:16:42,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:16:42,157 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:16:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2113661729, now seen corresponding path program 1 times [2021-11-20 07:16:42,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288553826] [2021-11-20 07:16:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:42,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:16:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:16:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:16:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:16:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:16:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:16:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:16:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:16:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:16:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:16:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:16:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:16:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:16:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:16:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:16:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-20 07:16:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-20 07:16:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 07:16:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-20 07:16:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-20 07:16:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-20 07:16:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-20 07:16:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-20 07:16:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-11-20 07:16:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-11-20 07:16:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-11-20 07:16:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2021-11-20 07:16:42,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288553826] [2021-11-20 07:16:42,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288553826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797381285] [2021-11-20 07:16:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:42,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:16:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:42,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:16:42,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:16:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:44,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 5159 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 07:16:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-11-20 07:16:45,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:16:45,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797381285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:45,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:16:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-20 07:16:45,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992191001] [2021-11-20 07:16:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:45,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:16:45,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:16:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:16:45,210 INFO L87 Difference]: Start difference. First operand 11236 states and 16947 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 07:16:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:46,402 INFO L93 Difference]: Finished difference Result 22492 states and 34052 transitions. [2021-11-20 07:16:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:16:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 351 [2021-11-20 07:16:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:46,456 INFO L225 Difference]: With dead ends: 22492 [2021-11-20 07:16:46,456 INFO L226 Difference]: Without dead ends: 11250 [2021-11-20 07:16:46,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:16:46,483 INFO L933 BasicCegarLoop]: 5868 mSDtfsCounter, 6 mSDsluCounter, 23404 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29272 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:46,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 29272 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:16:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2021-11-20 07:16:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 11250. [2021-11-20 07:16:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11250 states, 8477 states have (on average 1.4718650465966734) internal successors, (12477), 8833 states have internal predecessors, (12477), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 525 states have return successors, (2250), 2090 states have call predecessors, (2250), 2237 states have call successors, (2250) [2021-11-20 07:16:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11250 states to 11250 states and 16974 transitions. [2021-11-20 07:16:46,988 INFO L78 Accepts]: Start accepts. Automaton has 11250 states and 16974 transitions. Word has length 351 [2021-11-20 07:16:46,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:46,989 INFO L470 AbstractCegarLoop]: Abstraction has 11250 states and 16974 transitions. [2021-11-20 07:16:46,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 07:16:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11250 states and 16974 transitions. [2021-11-20 07:16:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-20 07:16:47,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:47,009 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:16:47,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:47,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 07:16:47,223 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:16:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 644474568, now seen corresponding path program 1 times [2021-11-20 07:16:47,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116493634] [2021-11-20 07:16:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:47,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:16:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:16:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:16:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:16:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:16:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:16:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:16:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:16:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:16:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:16:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:16:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 07:16:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-20 07:16:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-20 07:16:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-20 07:16:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-20 07:16:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-20 07:16:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:16:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-20 07:16:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-11-20 07:16:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-20 07:16:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-20 07:16:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-20 07:16:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-11-20 07:16:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-11-20 07:16:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-11-20 07:16:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-11-20 07:16:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2021-11-20 07:16:47,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:47,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116493634] [2021-11-20 07:16:47,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116493634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532619553] [2021-11-20 07:16:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:47,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:16:47,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:47,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:16:47,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:16:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:49,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 5201 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:16:49,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 174 proven. 1 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2021-11-20 07:16:50,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2021-11-20 07:16:51,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532619553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:16:51,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:16:51,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-11-20 07:16:51,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940610068] [2021-11-20 07:16:51,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:16:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:16:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:16:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:16:51,025 INFO L87 Difference]: Start difference. First operand 11250 states and 16974 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (64), 6 states have call predecessors, (64), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-20 07:17:14,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:17:16,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:17:18,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:17:19,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:17:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:33,763 INFO L93 Difference]: Finished difference Result 24719 states and 37729 transitions. [2021-11-20 07:17:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:17:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (64), 6 states have call predecessors, (64), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 358 [2021-11-20 07:17:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:33,810 INFO L225 Difference]: With dead ends: 24719 [2021-11-20 07:17:33,810 INFO L226 Difference]: Without dead ends: 13498 [2021-11-20 07:17:33,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:17:33,839 INFO L933 BasicCegarLoop]: 5194 mSDtfsCounter, 6404 mSDsluCounter, 19672 mSDsCounter, 0 mSdLazyCounter, 19507 mSolverCounterSat, 3589 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 24866 SdHoareTripleChecker+Invalid, 23098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3589 IncrementalHoareTripleChecker+Valid, 19507 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:33,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 24866 Invalid, 23098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3589 Valid, 19507 Invalid, 2 Unknown, 0 Unchecked, 41.7s Time] [2021-11-20 07:17:33,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13498 states. [2021-11-20 07:17:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13498 to 11292. [2021-11-20 07:17:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11292 states, 8519 states have (on average 1.4709472942833666) internal successors, (12531), 8875 states have internal predecessors, (12531), 2247 states have call successors, (2247), 525 states have call predecessors, (2247), 525 states have return successors, (2250), 2090 states have call predecessors, (2250), 2237 states have call successors, (2250) [2021-11-20 07:17:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11292 states to 11292 states and 17028 transitions. [2021-11-20 07:17:34,515 INFO L78 Accepts]: Start accepts. Automaton has 11292 states and 17028 transitions. Word has length 358 [2021-11-20 07:17:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:34,516 INFO L470 AbstractCegarLoop]: Abstraction has 11292 states and 17028 transitions. [2021-11-20 07:17:34,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (64), 6 states have call predecessors, (64), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-20 07:17:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 11292 states and 17028 transitions. [2021-11-20 07:17:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-20 07:17:34,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:34,535 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:17:34,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:34,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 07:17:34,744 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:34,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash -574795615, now seen corresponding path program 2 times [2021-11-20 07:17:34,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:34,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022479533] [2021-11-20 07:17:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:34,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:17:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:17:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:17:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:17:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:17:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:17:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:17:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:17:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:17:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:17:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:17:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 07:17:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-20 07:17:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-20 07:17:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-20 07:17:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-20 07:17:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-20 07:17:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:17:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-20 07:17:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-20 07:17:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-20 07:17:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-20 07:17:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-20 07:17:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-11-20 07:17:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-20 07:17:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-20 07:17:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-11-20 07:17:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-20 07:17:36,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:36,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022479533] [2021-11-20 07:17:36,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022479533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:36,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757177410] [2021-11-20 07:17:36,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:17:36,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:36,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:36,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:17:49,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:17:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:49,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 5210 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:17:49,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 240 proven. 1 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2021-11-20 07:17:49,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-20 07:17:51,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757177410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:51,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:17:51,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-11-20 07:17:51,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158233249] [2021-11-20 07:17:51,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:51,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:17:51,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:17:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:17:51,280 INFO L87 Difference]: Start difference. First operand 11292 states and 17028 transitions. Second operand has 17 states, 15 states have (on average 12.333333333333334) internal successors, (185), 13 states have internal predecessors, (185), 4 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-20 07:18:23,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:25,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:28,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:29,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:31,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:50,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:18:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:59,797 INFO L93 Difference]: Finished difference Result 24804 states and 37967 transitions. [2021-11-20 07:18:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:18:59,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 12.333333333333334) internal successors, (185), 13 states have internal predecessors, (185), 4 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 362 [2021-11-20 07:18:59,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:59,971 INFO L225 Difference]: With dead ends: 24804 [2021-11-20 07:18:59,971 INFO L226 Difference]: Without dead ends: 13506 [2021-11-20 07:18:59,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 811 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2021-11-20 07:18:59,999 INFO L933 BasicCegarLoop]: 5147 mSDtfsCounter, 8431 mSDsluCounter, 25311 mSDsCounter, 0 mSdLazyCounter, 25107 mSolverCounterSat, 4890 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8720 SdHoareTripleChecker+Valid, 30458 SdHoareTripleChecker+Invalid, 29999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4890 IncrementalHoareTripleChecker+Valid, 25107 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:59,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8720 Valid, 30458 Invalid, 29999 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4890 Valid, 25107 Invalid, 2 Unknown, 0 Unchecked, 67.0s Time] [2021-11-20 07:19:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2021-11-20 07:19:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 11328. [2021-11-20 07:19:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11328 states, 8543 states have (on average 1.4700924733700105) internal successors, (12559), 8899 states have internal predecessors, (12559), 2253 states have call successors, (2253), 531 states have call predecessors, (2253), 531 states have return successors, (2256), 2096 states have call predecessors, (2256), 2243 states have call successors, (2256) [2021-11-20 07:19:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11328 states to 11328 states and 17068 transitions. [2021-11-20 07:19:00,586 INFO L78 Accepts]: Start accepts. Automaton has 11328 states and 17068 transitions. Word has length 362 [2021-11-20 07:19:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:00,587 INFO L470 AbstractCegarLoop]: Abstraction has 11328 states and 17068 transitions. [2021-11-20 07:19:00,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 12.333333333333334) internal successors, (185), 13 states have internal predecessors, (185), 4 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-20 07:19:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 11328 states and 17068 transitions. [2021-11-20 07:19:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-20 07:19:00,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:00,609 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:19:00,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:00,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:00,824 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:19:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1417433446, now seen corresponding path program 3 times [2021-11-20 07:19:00,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018563009] [2021-11-20 07:19:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:00,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:19:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:19:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:19:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:19:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:19:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:19:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:19:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-20 07:19:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 07:19:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-20 07:19:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 07:19:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 07:19:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-20 07:19:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-20 07:19:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-20 07:19:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-20 07:19:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-20 07:19:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-20 07:19:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-20 07:19:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-11-20 07:19:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-20 07:19:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-20 07:19:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-20 07:19:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-11-20 07:19:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-11-20 07:19:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2021-11-20 07:19:02,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:02,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018563009] [2021-11-20 07:19:02,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018563009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:19:02,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081919180] [2021-11-20 07:19:02,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:19:02,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:02,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:02,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:19:02,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:19:17,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 07:19:17,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:19:17,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 4598 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:19:17,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:19:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 258 proven. 3 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-20 07:19:18,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:19:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2021-11-20 07:19:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081919180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:19:20,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:19:20,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2021-11-20 07:19:20,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027400053] [2021-11-20 07:19:20,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:19:20,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:19:20,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:19:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:19:20,077 INFO L87 Difference]: Start difference. First operand 11328 states and 17068 transitions. Second operand has 20 states, 18 states have (on average 10.38888888888889) internal successors, (187), 16 states have internal predecessors, (187), 4 states have call successors, (69), 6 states have call predecessors, (69), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-20 07:20:11,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:13,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:16,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:17,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:19,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:21,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:22,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:48,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:50,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:20:52,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:21:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:07,499 INFO L93 Difference]: Finished difference Result 24872 states and 38048 transitions. [2021-11-20 07:21:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:21:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 10.38888888888889) internal successors, (187), 16 states have internal predecessors, (187), 4 states have call successors, (69), 6 states have call predecessors, (69), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 369 [2021-11-20 07:21:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:07,545 INFO L225 Difference]: With dead ends: 24872 [2021-11-20 07:21:07,545 INFO L226 Difference]: Without dead ends: 13520 [2021-11-20 07:21:07,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 824 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 07:21:07,573 INFO L933 BasicCegarLoop]: 5144 mSDtfsCounter, 6849 mSDsluCounter, 33112 mSDsCounter, 0 mSdLazyCounter, 33020 mSolverCounterSat, 3775 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7142 SdHoareTripleChecker+Valid, 38256 SdHoareTripleChecker+Invalid, 36801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3775 IncrementalHoareTripleChecker+Valid, 33020 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:07,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7142 Valid, 38256 Invalid, 36801 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3775 Valid, 33020 Invalid, 6 Unknown, 0 Unchecked, 105.1s Time] [2021-11-20 07:21:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13520 states. [2021-11-20 07:21:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13520 to 11334. [2021-11-20 07:21:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11334 states, 8549 states have (on average 1.47023043630834) internal successors, (12569), 8905 states have internal predecessors, (12569), 2253 states have call successors, (2253), 531 states have call predecessors, (2253), 531 states have return successors, (2256), 2096 states have call predecessors, (2256), 2243 states have call successors, (2256) [2021-11-20 07:21:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 17078 transitions. [2021-11-20 07:21:08,133 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 17078 transitions. Word has length 369 [2021-11-20 07:21:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:08,133 INFO L470 AbstractCegarLoop]: Abstraction has 11334 states and 17078 transitions. [2021-11-20 07:21:08,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 10.38888888888889) internal successors, (187), 16 states have internal predecessors, (187), 4 states have call successors, (69), 6 states have call predecessors, (69), 6 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-20 07:21:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 17078 transitions. [2021-11-20 07:21:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-20 07:21:08,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:08,147 INFO L514 BasicCegarLoop]: trace histogram [21, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:21:08,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:08,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:21:08,347 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 311542913, now seen corresponding path program 4 times [2021-11-20 07:21:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218371248] [2021-11-20 07:21:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:08,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:21:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:21:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:21:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:21:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:21:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:21:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:21:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:21:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:21:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 07:21:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-20 07:21:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-20 07:21:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-20 07:21:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-20 07:21:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-20 07:21:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 07:21:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-20 07:21:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-11-20 07:21:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-20 07:21:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-20 07:21:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-20 07:21:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-20 07:21:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-11-20 07:21:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-11-20 07:21:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-11-20 07:21:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 4 proven. 138 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2021-11-20 07:21:09,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218371248] [2021-11-20 07:21:09,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218371248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352080024] [2021-11-20 07:21:09,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:21:09,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:21:09,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:09,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:21:09,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144f24d7-2bcd-4036-a907-f1c283385f37/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:21:12,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:21:12,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:21:12,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 5294 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 07:21:12,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 478 proven. 52 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-20 07:21:13,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2021-11-20 07:21:15,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352080024] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:21:15,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:21:15,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2021-11-20 07:21:15,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036152076] [2021-11-20 07:21:15,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:15,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 07:21:15,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:15,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 07:21:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:21:15,290 INFO L87 Difference]: Start difference. First operand 11334 states and 17078 transitions. Second operand has 25 states, 23 states have (on average 8.608695652173912) internal successors, (198), 21 states have internal predecessors, (198), 4 states have call successors, (74), 6 states have call predecessors, (74), 8 states have return successors, (58), 5 states have call predecessors, (58), 4 states have call successors, (58)