./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y --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 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:56:20,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:56:20,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:56:20,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:56:20,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:56:20,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:56:20,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:56:20,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:56:20,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:56:20,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:56:20,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:56:20,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:56:20,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:56:20,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:56:20,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:56:20,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:56:20,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:56:20,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:56:20,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:56:20,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:56:20,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:56:20,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:56:20,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:56:20,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:56:20,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:56:20,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:56:20,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:56:20,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:56:20,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:56:20,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:56:20,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:56:20,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:56:20,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:56:20,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:56:20,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:56:20,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:56:20,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:56:20,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:56:20,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:56:20,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:56:20,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:56:20,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:56:20,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:56:20,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:56:20,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:56:20,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:56:20,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:56:20,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:56:20,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:56:20,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:56:20,296 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:56:20,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:56:20,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:56:20,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:56:20,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:56:20,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:56:20,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:56:20,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:56:20,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:56:20,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:56:20,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:56:20,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:56:20,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:56:20,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:56:20,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:56:20,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:56:20,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:56:20,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:56:20,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:56:20,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:56:20,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:56:20,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:56:20,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:56:20,307 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_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2021-11-13 17:56:20,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:56:20,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:56:20,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:56:20,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:56:20,684 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:56:20,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-11-13 17:56:20,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/data/5e142c3d5/4ff0a11de65b488a8cef071c09de09cb/FLAG7082104aa [2021-11-13 17:56:21,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:56:21,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-11-13 17:56:21,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/data/5e142c3d5/4ff0a11de65b488a8cef071c09de09cb/FLAG7082104aa [2021-11-13 17:56:22,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/data/5e142c3d5/4ff0a11de65b488a8cef071c09de09cb [2021-11-13 17:56:22,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:56:22,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:56:22,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:56:22,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:56:22,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:56:22,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:56:22" (1/1) ... [2021-11-13 17:56:22,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c28d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:22, skipping insertion in model container [2021-11-13 17:56:22,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:56:22" (1/1) ... [2021-11-13 17:56:22,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:56:22,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:56:25,287 WARN L228 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_edda4402-610c-4d17-88ee-bd3b42345965/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-11-13 17:56:25,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:56:25,602 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:56:26,597 WARN L228 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_edda4402-610c-4d17-88ee-bd3b42345965/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-11-13 17:56:26,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:56:26,819 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:56:26,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26 WrapperNode [2021-11-13 17:56:26,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:56:26,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:56:26,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:56:26,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:56:26,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:27,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:27,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:56:27,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:56:27,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:56:27,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:56:27,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:27,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:27,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:27,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:28,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:28,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:28,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:28,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:56:28,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:56:28,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:56:28,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:56:28,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (1/1) ... [2021-11-13 17:56:28,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:56:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:56:28,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:56:28,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:56:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2021-11-13 17:56:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2021-11-13 17:56:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-11-13 17:56:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-11-13 17:56:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-11-13 17:56:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-11-13 17:56:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:56:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 17:56:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 17:56:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-11-13 17:56:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-11-13 17:56:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2021-11-13 17:56:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2021-11-13 17:56:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-11-13 17:56:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-11-13 17:56:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:56:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:56:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-11-13 17:56:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-11-13 17:56:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:56:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-11-13 17:56:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-11-13 17:56:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-11-13 17:56:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-11-13 17:56:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-11-13 17:56:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-11-13 17:56:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:56:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:56:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-11-13 17:56:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-11-13 17:56:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-11-13 17:56:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-11-13 17:56:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:56:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 17:56:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 17:56:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-11-13 17:56:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-11-13 17:56:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:56:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:56:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-11-13 17:56:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-11-13 17:56:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-11-13 17:56:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-11-13 17:56:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-11-13 17:56:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-11-13 17:56:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-11-13 17:56:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-11-13 17:56:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:56:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:56:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-13 17:56:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-13 17:56:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-11-13 17:56:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-11-13 17:56:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 17:56:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 17:56:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 17:56:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 17:56:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-11-13 17:56:28,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-11-13 17:56:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:56:28,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:56:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-11-13 17:56:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-11-13 17:56:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-11-13 17:56:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-11-13 17:56:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-11-13 17:56:28,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-11-13 17:56:28,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:56:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:56:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:56:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-11-13 17:56:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-11-13 17:56:28,954 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-11-13 17:56:28,954 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-11-13 17:56:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-11-13 17:56:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-11-13 17:56:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-11-13 17:56:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-11-13 17:56:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-11-13 17:56:28,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-11-13 17:56:28,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:56:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:56:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-11-13 17:56:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-11-13 17:56:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-11-13 17:56:28,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-11-13 17:56:28,956 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-11-13 17:56:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-11-13 17:56:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-11-13 17:56:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-11-13 17:56:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 17:56:28,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 17:56:28,957 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-11-13 17:56:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-11-13 17:56:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-11-13 17:56:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-11-13 17:56:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:56:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-13 17:56:28,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-13 17:56:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2021-11-13 17:56:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2021-11-13 17:56:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-11-13 17:56:28,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-11-13 17:56:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:56:28,975 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-11-13 17:56:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-11-13 17:56:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:56:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:56:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-11-13 17:56:28,976 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-11-13 18:00:23,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:00:23,835 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:00:23,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:23 BoogieIcfgContainer [2021-11-13 18:00:23,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:00:23,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:00:23,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:00:23,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:00:23,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:56:22" (1/3) ... [2021-11-13 18:00:23,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1483a107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:23, skipping insertion in model container [2021-11-13 18:00:23,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:56:26" (2/3) ... [2021-11-13 18:00:23,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1483a107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:23, skipping insertion in model container [2021-11-13 18:00:23,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:23" (3/3) ... [2021-11-13 18:00:23,852 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-11-13 18:00:23,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:00:23,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:00:23,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:00:23,937 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 [2021-11-13 18:00:23,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:00:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2021-11-13 18:00:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 18:00:24,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:24,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:24,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1796736915, now seen corresponding path program 1 times [2021-11-13 18:00:24,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:24,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714568077] [2021-11-13 18:00:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:24,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:25,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:25,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714568077] [2021-11-13 18:00:25,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714568077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:25,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:25,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953006689] [2021-11-13 18:00:25,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:25,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:25,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:25,649 INFO L87 Difference]: Start difference. First operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:27,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:28,608 INFO L93 Difference]: Finished difference Result 10596 states and 17366 transitions. [2021-11-13 18:00:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-13 18:00:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:28,714 INFO L225 Difference]: With dead ends: 10596 [2021-11-13 18:00:28,714 INFO L226 Difference]: Without dead ends: 5294 [2021-11-13 18:00:28,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:28,826 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8639 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2297.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8639 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2389.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:28,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8639 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 52.68ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2389.13ms Time] [2021-11-13 18:00:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-11-13 18:00:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5294. [2021-11-13 18:00:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 3970 states have (on average 1.5357682619647355) internal successors, (6097), 3981 states have internal predecessors, (6097), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2021-11-13 18:00:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8640 transitions. [2021-11-13 18:00:29,997 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8640 transitions. Word has length 8 [2021-11-13 18:00:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:29,998 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 8640 transitions. [2021-11-13 18:00:29,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8640 transitions. [2021-11-13 18:00:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:00:30,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:30,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:30,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:00:30,002 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:30,006 INFO L85 PathProgramCache]: Analyzing trace with hash -138225567, now seen corresponding path program 1 times [2021-11-13 18:00:30,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:30,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308448164] [2021-11-13 18:00:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:30,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:30,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:30,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308448164] [2021-11-13 18:00:30,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308448164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:30,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:30,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:30,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727849980] [2021-11-13 18:00:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:30,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:30,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:31,001 INFO L87 Difference]: Start difference. First operand 5294 states and 8640 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:33,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:33,803 INFO L93 Difference]: Finished difference Result 10658 states and 17395 transitions. [2021-11-13 18:00:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 18:00:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:33,874 INFO L225 Difference]: With dead ends: 10658 [2021-11-13 18:00:33,874 INFO L226 Difference]: Without dead ends: 5367 [2021-11-13 18:00:33,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:33,924 INFO L933 BasicCegarLoop]: 8640 mSDtfsCounter, 8370 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2350.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8370 SdHoareTripleChecker+Valid, 9007 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.13ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2428.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:33,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8370 Valid, 9007 Invalid, 10 Unknown, 0 Unchecked, 30.13ms Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2428.04ms Time] [2021-11-13 18:00:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-11-13 18:00:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5364. [2021-11-13 18:00:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 4032 states have (on average 1.5364583333333333) internal successors, (6195), 4041 states have internal predecessors, (6195), 1279 states have call successors, (1279), 54 states have call predecessors, (1279), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-11-13 18:00:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 8745 transitions. [2021-11-13 18:00:35,064 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 8745 transitions. Word has length 9 [2021-11-13 18:00:35,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:35,064 INFO L470 AbstractCegarLoop]: Abstraction has 5364 states and 8745 transitions. [2021-11-13 18:00:35,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 8745 transitions. [2021-11-13 18:00:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:00:35,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:35,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:35,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:00:35,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 7484502, now seen corresponding path program 1 times [2021-11-13 18:00:35,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:35,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385538423] [2021-11-13 18:00:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:35,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:35,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:35,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385538423] [2021-11-13 18:00:35,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385538423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:35,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:35,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:35,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131394504] [2021-11-13 18:00:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:35,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:35,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:35,970 INFO L87 Difference]: Start difference. First operand 5364 states and 8745 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:38,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:38,701 INFO L93 Difference]: Finished difference Result 5366 states and 8746 transitions. [2021-11-13 18:00:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 18:00:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:38,765 INFO L225 Difference]: With dead ends: 5366 [2021-11-13 18:00:38,766 INFO L226 Difference]: Without dead ends: 5363 [2021-11-13 18:00:38,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:38,779 INFO L933 BasicCegarLoop]: 8633 mSDtfsCounter, 8627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2321.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8627 SdHoareTripleChecker+Valid, 8633 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2387.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:38,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8627 Valid, 8633 Invalid, 2 Unknown, 0 Unchecked, 21.88ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2387.66ms Time] [2021-11-13 18:00:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-11-13 18:00:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5363. [2021-11-13 18:00:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 4032 states have (on average 1.5362103174603174) internal successors, (6194), 4040 states have internal predecessors, (6194), 1278 states have call successors, (1278), 54 states have call predecessors, (1278), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-11-13 18:00:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 8743 transitions. [2021-11-13 18:00:39,823 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 8743 transitions. Word has length 10 [2021-11-13 18:00:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:39,823 INFO L470 AbstractCegarLoop]: Abstraction has 5363 states and 8743 transitions. [2021-11-13 18:00:39,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 8743 transitions. [2021-11-13 18:00:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:00:39,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:39,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:39,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:00:39,826 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 229534212, now seen corresponding path program 1 times [2021-11-13 18:00:39,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:39,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125067168] [2021-11-13 18:00:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:39,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:40,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:40,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125067168] [2021-11-13 18:00:40,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125067168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:40,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:40,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:40,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512729851] [2021-11-13 18:00:40,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:40,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:40,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:40,700 INFO L87 Difference]: Start difference. First operand 5363 states and 8743 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:43,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:43,349 INFO L93 Difference]: Finished difference Result 5365 states and 8744 transitions. [2021-11-13 18:00:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 18:00:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:43,407 INFO L225 Difference]: With dead ends: 5365 [2021-11-13 18:00:43,407 INFO L226 Difference]: Without dead ends: 5362 [2021-11-13 18:00:43,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:43,424 INFO L933 BasicCegarLoop]: 8631 mSDtfsCounter, 8624 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2342.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8624 SdHoareTripleChecker+Valid, 8631 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2431.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:43,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8624 Valid, 8631 Invalid, 2 Unknown, 0 Unchecked, 20.69ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2431.25ms Time] [2021-11-13 18:00:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-11-13 18:00:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5362. [2021-11-13 18:00:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5362 states, 4032 states have (on average 1.5359623015873016) internal successors, (6193), 4039 states have internal predecessors, (6193), 1277 states have call successors, (1277), 54 states have call predecessors, (1277), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-11-13 18:00:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 8741 transitions. [2021-11-13 18:00:44,343 INFO L78 Accepts]: Start accepts. Automaton has 5362 states and 8741 transitions. Word has length 11 [2021-11-13 18:00:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:44,344 INFO L470 AbstractCegarLoop]: Abstraction has 5362 states and 8741 transitions. [2021-11-13 18:00:44,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5362 states and 8741 transitions. [2021-11-13 18:00:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:00:44,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:44,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:44,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:00:44,347 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1476854503, now seen corresponding path program 1 times [2021-11-13 18:00:44,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:44,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660193996] [2021-11-13 18:00:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:44,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:45,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:45,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660193996] [2021-11-13 18:00:45,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660193996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:45,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:45,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:45,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055058427] [2021-11-13 18:00:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:45,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:45,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:45,292 INFO L87 Difference]: Start difference. First operand 5362 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:47,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:47,852 INFO L93 Difference]: Finished difference Result 5364 states and 8742 transitions. [2021-11-13 18:00:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:47,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 18:00:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:47,908 INFO L225 Difference]: With dead ends: 5364 [2021-11-13 18:00:47,908 INFO L226 Difference]: Without dead ends: 5361 [2021-11-13 18:00:47,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:47,917 INFO L933 BasicCegarLoop]: 8629 mSDtfsCounter, 8621 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2254.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8621 SdHoareTripleChecker+Valid, 8629 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2342.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:47,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8621 Valid, 8629 Invalid, 2 Unknown, 0 Unchecked, 20.77ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2342.63ms Time] [2021-11-13 18:00:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-11-13 18:00:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 5361. [2021-11-13 18:00:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4032 states have (on average 1.5357142857142858) internal successors, (6192), 4038 states have internal predecessors, (6192), 1276 states have call successors, (1276), 54 states have call predecessors, (1276), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-11-13 18:00:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8739 transitions. [2021-11-13 18:00:48,862 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8739 transitions. Word has length 12 [2021-11-13 18:00:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:48,862 INFO L470 AbstractCegarLoop]: Abstraction has 5361 states and 8739 transitions. [2021-11-13 18:00:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8739 transitions. [2021-11-13 18:00:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:00:48,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:48,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:48,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:00:48,865 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:48,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:48,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1459675047, now seen corresponding path program 1 times [2021-11-13 18:00:48,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:48,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511681443] [2021-11-13 18:00:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:48,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:49,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:49,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511681443] [2021-11-13 18:00:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511681443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:49,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:49,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180956337] [2021-11-13 18:00:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:49,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:49,607 INFO L87 Difference]: Start difference. First operand 5361 states and 8739 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:51,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:00:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:52,595 INFO L93 Difference]: Finished difference Result 16061 states and 26323 transitions. [2021-11-13 18:00:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 18:00:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:52,704 INFO L225 Difference]: With dead ends: 16061 [2021-11-13 18:00:52,707 INFO L226 Difference]: Without dead ends: 10697 [2021-11-13 18:00:52,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:52,768 INFO L933 BasicCegarLoop]: 10012 mSDtfsCounter, 8649 mSDsluCounter, 8651 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2315.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8649 SdHoareTripleChecker+Valid, 18663 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.91ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2393.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:52,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8649 Valid, 18663 Invalid, 12 Unknown, 0 Unchecked, 53.91ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2393.40ms Time] [2021-11-13 18:00:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-11-13 18:00:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10688. [2021-11-13 18:00:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10688 states, 8041 states have (on average 1.5368735231936326) internal successors, (12358), 8052 states have internal predecessors, (12358), 2544 states have call successors, (2544), 105 states have call predecessors, (2544), 102 states have return successors, (2617), 2534 states have call predecessors, (2617), 2537 states have call successors, (2617) [2021-11-13 18:00:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 17519 transitions. [2021-11-13 18:00:54,691 INFO L78 Accepts]: Start accepts. Automaton has 10688 states and 17519 transitions. Word has length 13 [2021-11-13 18:00:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:54,691 INFO L470 AbstractCegarLoop]: Abstraction has 10688 states and 17519 transitions. [2021-11-13 18:00:54,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 10688 states and 17519 transitions. [2021-11-13 18:00:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:00:54,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:54,709 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:00:54,709 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -836050860, now seen corresponding path program 1 times [2021-11-13 18:00:54,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:54,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522437262] [2021-11-13 18:00:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:54,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:00:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:00:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:00:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:00:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:00:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:00:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:00:55,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:55,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522437262] [2021-11-13 18:00:55,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522437262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:55,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:55,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:00:55,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757857873] [2021-11-13 18:00:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:55,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:00:55,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:00:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:00:55,838 INFO L87 Difference]: Start difference. First operand 10688 states and 17519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:00:58,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:08,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:01:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:01:09,030 INFO L93 Difference]: Finished difference Result 21624 states and 35542 transitions. [2021-11-13 18:01:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:01:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2021-11-13 18:01:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:01:09,133 INFO L225 Difference]: With dead ends: 21624 [2021-11-13 18:01:09,133 INFO L226 Difference]: Without dead ends: 10939 [2021-11-13 18:01:09,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:01:09,256 INFO L933 BasicCegarLoop]: 8509 mSDtfsCounter, 509 mSDsluCounter, 22191 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 1325 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10821.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 30700 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.26ms SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12307.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:01:09,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 30700 Invalid, 3660 Unknown, 0 Unchecked, 102.26ms Time], IncrementalHoareTripleChecker [1325 Valid, 2333 Invalid, 2 Unknown, 0 Unchecked, 12307.30ms Time] [2021-11-13 18:01:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-11-13 18:01:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10805. [2021-11-13 18:01:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 8137 states have (on average 1.5363155954282905) internal successors, (12501), 8150 states have internal predecessors, (12501), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2021-11-13 18:01:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 17702 transitions. [2021-11-13 18:01:11,632 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 17702 transitions. Word has length 69 [2021-11-13 18:01:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:01:11,633 INFO L470 AbstractCegarLoop]: Abstraction has 10805 states and 17702 transitions. [2021-11-13 18:01:11,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:01:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 17702 transitions. [2021-11-13 18:01:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 18:01:11,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:01:11,643 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:01:11,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:01:11,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:01:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 122332334, now seen corresponding path program 1 times [2021-11-13 18:01:11,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:11,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502714619] [2021-11-13 18:01:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:11,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:01:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:01:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:01:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:01:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 18:01:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:01:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:01:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:01:29,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:29,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502714619] [2021-11-13 18:01:29,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502714619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:29,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:29,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:01:29,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027953210] [2021-11-13 18:01:29,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:29,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:01:29,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:29,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:01:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:01:29,378 INFO L87 Difference]: Start difference. First operand 10805 states and 17702 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 18:01:31,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:33,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:35,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:38,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:01:40,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:06,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:08,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:02:38,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:02:41,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:02:43,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:02:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:02:46,448 INFO L93 Difference]: Finished difference Result 22513 states and 37048 transitions. [2021-11-13 18:02:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:02:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 78 [2021-11-13 18:02:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:02:46,576 INFO L225 Difference]: With dead ends: 22513 [2021-11-13 18:02:46,577 INFO L226 Difference]: Without dead ends: 11711 [2021-11-13 18:02:46,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:02:46,724 INFO L933 BasicCegarLoop]: 8418 mSDtfsCounter, 1619 mSDsluCounter, 45025 mSDsCounter, 0 mSdLazyCounter, 15968 mSolverCounterSat, 1737 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66559.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 53443 SdHoareTripleChecker+Invalid, 17714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 203.21ms SdHoareTripleChecker+Time, 1737 IncrementalHoareTripleChecker+Valid, 15968 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75475.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:02:46,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 53443 Invalid, 17714 Unknown, 0 Unchecked, 203.21ms Time], IncrementalHoareTripleChecker [1737 Valid, 15968 Invalid, 9 Unknown, 0 Unchecked, 75475.35ms Time] [2021-11-13 18:02:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11711 states. [2021-11-13 18:02:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11711 to 11276. [2021-11-13 18:02:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11276 states, 8482 states have (on average 1.5338363593492101) internal successors, (13010), 8528 states have internal predecessors, (13010), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 143 states have return successors, (2761), 2604 states have call predecessors, (2761), 2643 states have call successors, (2761) [2021-11-13 18:02:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11276 states to 11276 states and 18421 transitions. [2021-11-13 18:02:49,186 INFO L78 Accepts]: Start accepts. Automaton has 11276 states and 18421 transitions. Word has length 78 [2021-11-13 18:02:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:02:49,189 INFO L470 AbstractCegarLoop]: Abstraction has 11276 states and 18421 transitions. [2021-11-13 18:02:49,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 18:02:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11276 states and 18421 transitions. [2021-11-13 18:02:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 18:02:49,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:02:49,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:02:49,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:02:49,206 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:02:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:02:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 702555912, now seen corresponding path program 1 times [2021-11-13 18:02:49,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:02:49,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786453106] [2021-11-13 18:02:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:02:49,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:02:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:03:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:03:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:03:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:03:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:03:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:03:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:03:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:03:04,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:04,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786453106] [2021-11-13 18:03:04,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786453106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:04,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:04,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:03:04,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546190151] [2021-11-13 18:03:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:04,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:03:04,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:03:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:03:04,196 INFO L87 Difference]: Start difference. First operand 11276 states and 18421 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 18:03:06,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:08,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:10,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:12,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:14,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:03:57,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:04:40,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:42,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:45,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:47,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:49,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:51,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:54,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:04:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:57,603 INFO L93 Difference]: Finished difference Result 22545 states and 37088 transitions. [2021-11-13 18:04:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:04:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2021-11-13 18:04:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:57,709 INFO L225 Difference]: With dead ends: 22545 [2021-11-13 18:04:57,710 INFO L226 Difference]: Without dead ends: 11715 [2021-11-13 18:04:57,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:04:57,820 INFO L933 BasicCegarLoop]: 8414 mSDtfsCounter, 1814 mSDsluCounter, 64561 mSDsCounter, 0 mSdLazyCounter, 22846 mSolverCounterSat, 3051 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94449.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 72975 SdHoareTripleChecker+Invalid, 25910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 263.89ms SdHoareTripleChecker+Time, 3051 IncrementalHoareTripleChecker+Valid, 22846 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111546.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:57,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 72975 Invalid, 25910 Unknown, 0 Unchecked, 263.89ms Time], IncrementalHoareTripleChecker [3051 Valid, 22846 Invalid, 13 Unknown, 0 Unchecked, 111546.64ms Time] [2021-11-13 18:04:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11715 states. [2021-11-13 18:04:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11715 to 11284. [2021-11-13 18:04:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 8490 states have (on average 1.5333333333333334) internal successors, (13018), 8536 states have internal predecessors, (13018), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 143 states have return successors, (2761), 2604 states have call predecessors, (2761), 2643 states have call successors, (2761) [2021-11-13 18:04:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 18429 transitions. [2021-11-13 18:04:59,833 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 18429 transitions. Word has length 80 [2021-11-13 18:04:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:59,835 INFO L470 AbstractCegarLoop]: Abstraction has 11284 states and 18429 transitions. [2021-11-13 18:04:59,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 18:04:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 18429 transitions. [2021-11-13 18:04:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 18:04:59,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:59,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:04:59,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:04:59,852 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:04:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1731862929, now seen corresponding path program 1 times [2021-11-13 18:04:59,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:59,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787890453] [2021-11-13 18:04:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:59,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:05:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:00,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 18:05:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:05:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:05:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:05:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:05:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:05:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:05:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:05:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:05:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 18:05:01,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:01,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787890453] [2021-11-13 18:05:01,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787890453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:05:01,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:05:01,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:05:01,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594097783] [2021-11-13 18:05:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:05:01,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:05:01,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:05:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:05:01,295 INFO L87 Difference]: Start difference. First operand 11284 states and 18429 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:05:03,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:05:05,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:05:34,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:06:08,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:06:10,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:06:17,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:06:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:19,511 INFO L93 Difference]: Finished difference Result 28300 states and 49160 transitions. [2021-11-13 18:06:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:06:19,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 89 [2021-11-13 18:06:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:19,679 INFO L225 Difference]: With dead ends: 28300 [2021-11-13 18:06:19,680 INFO L226 Difference]: Without dead ends: 17466 [2021-11-13 18:06:19,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:06:19,795 INFO L933 BasicCegarLoop]: 9091 mSDtfsCounter, 6361 mSDsluCounter, 43491 mSDsCounter, 0 mSdLazyCounter, 20312 mSolverCounterSat, 3938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64719.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8243 SdHoareTripleChecker+Valid, 52582 SdHoareTripleChecker+Invalid, 24256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 275.94ms SdHoareTripleChecker+Time, 3938 IncrementalHoareTripleChecker+Valid, 20312 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76731.33ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:19,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8243 Valid, 52582 Invalid, 24256 Unknown, 0 Unchecked, 275.94ms Time], IncrementalHoareTripleChecker [3938 Valid, 20312 Invalid, 6 Unknown, 0 Unchecked, 76731.33ms Time] [2021-11-13 18:06:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17466 states. [2021-11-13 18:06:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17466 to 11294. [2021-11-13 18:06:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11294 states, 8498 states have (on average 1.532831254412803) internal successors, (13026), 8544 states have internal predecessors, (13026), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2021-11-13 18:06:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11294 states to 11294 states and 18477 transitions. [2021-11-13 18:06:23,916 INFO L78 Accepts]: Start accepts. Automaton has 11294 states and 18477 transitions. Word has length 89 [2021-11-13 18:06:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:23,917 INFO L470 AbstractCegarLoop]: Abstraction has 11294 states and 18477 transitions. [2021-11-13 18:06:23,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:06:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11294 states and 18477 transitions. [2021-11-13 18:06:23,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 18:06:23,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:23,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:23,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:06:23,930 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:06:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 515870327, now seen corresponding path program 1 times [2021-11-13 18:06:23,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:23,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853078908] [2021-11-13 18:06:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:23,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:06:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:06:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:06:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:06:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:06:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:06:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:06:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:06:24,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:24,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853078908] [2021-11-13 18:06:24,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853078908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:24,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:24,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:06:24,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294226121] [2021-11-13 18:06:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:24,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:06:24,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:06:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:24,967 INFO L87 Difference]: Start difference. First operand 11294 states and 18477 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:06:27,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:06:43,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:06:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:43,986 INFO L93 Difference]: Finished difference Result 22261 states and 36667 transitions. [2021-11-13 18:06:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:06:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2021-11-13 18:06:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:44,063 INFO L225 Difference]: With dead ends: 22261 [2021-11-13 18:06:44,063 INFO L226 Difference]: Without dead ends: 11417 [2021-11-13 18:06:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:06:44,162 INFO L933 BasicCegarLoop]: 8514 mSDtfsCounter, 358 mSDsluCounter, 13837 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 1282 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14715.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.49ms SdHoareTripleChecker+Time, 1282 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18128.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:44,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 22351 Invalid, 3307 Unknown, 0 Unchecked, 59.49ms Time], IncrementalHoareTripleChecker [1282 Valid, 2023 Invalid, 2 Unknown, 0 Unchecked, 18128.62ms Time] [2021-11-13 18:06:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2021-11-13 18:06:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 11298. [2021-11-13 18:06:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11298 states, 8502 states have (on average 1.532580569277817) internal successors, (13030), 8548 states have internal predecessors, (13030), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2021-11-13 18:06:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11298 states to 11298 states and 18481 transitions. [2021-11-13 18:06:46,038 INFO L78 Accepts]: Start accepts. Automaton has 11298 states and 18481 transitions. Word has length 82 [2021-11-13 18:06:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:46,039 INFO L470 AbstractCegarLoop]: Abstraction has 11298 states and 18481 transitions. [2021-11-13 18:06:46,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:06:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 11298 states and 18481 transitions. [2021-11-13 18:06:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:06:46,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:46,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:46,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:06:46,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:06:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1235873313, now seen corresponding path program 1 times [2021-11-13 18:06:46,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:46,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63562605] [2021-11-13 18:06:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:46,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:06:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 18:06:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:06:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:06:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:06:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:06:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:06:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 18:06:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:06:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 18:06:58,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:58,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63562605] [2021-11-13 18:06:58,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63562605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:58,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:06:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806196406] [2021-11-13 18:06:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:06:58,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:06:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:06:58,589 INFO L87 Difference]: Start difference. First operand 11298 states and 18481 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:07:00,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:07:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:07,072 INFO L93 Difference]: Finished difference Result 22295 states and 38408 transitions. [2021-11-13 18:07:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:07:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2021-11-13 18:07:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:07,141 INFO L225 Difference]: With dead ends: 22295 [2021-11-13 18:07:07,141 INFO L226 Difference]: Without dead ends: 11447 [2021-11-13 18:07:07,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:07,257 INFO L933 BasicCegarLoop]: 8516 mSDtfsCounter, 815 mSDsluCounter, 15222 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 2592 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6954.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 23738 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.04ms SdHoareTripleChecker+Time, 2592 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7900.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:07,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 23738 Invalid, 3249 Unknown, 0 Unchecked, 36.04ms Time], IncrementalHoareTripleChecker [2592 Valid, 656 Invalid, 1 Unknown, 0 Unchecked, 7900.22ms Time] [2021-11-13 18:07:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2021-11-13 18:07:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11302. [2021-11-13 18:07:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11302 states, 8506 states have (on average 1.5323301199153538) internal successors, (13034), 8552 states have internal predecessors, (13034), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2021-11-13 18:07:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11302 states to 11302 states and 18485 transitions. [2021-11-13 18:07:08,823 INFO L78 Accepts]: Start accepts. Automaton has 11302 states and 18485 transitions. Word has length 93 [2021-11-13 18:07:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:08,825 INFO L470 AbstractCegarLoop]: Abstraction has 11302 states and 18485 transitions. [2021-11-13 18:07:08,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:07:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 11302 states and 18485 transitions. [2021-11-13 18:07:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:07:08,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:08,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:08,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:07:08,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:07:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2123346062, now seen corresponding path program 1 times [2021-11-13 18:07:08,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:08,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266188869] [2021-11-13 18:07:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:08,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:07:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:07:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:07:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:07:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:07:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:07:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:21,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:07:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:07:21,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:21,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266188869] [2021-11-13 18:07:21,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266188869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:07:21,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632858619] [2021-11-13 18:07:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:21,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:21,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:07:21,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:07:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:28,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 9229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:07:28,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:07:29,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632858619] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:07:29,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:07:29,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2021-11-13 18:07:29,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69464034] [2021-11-13 18:07:29,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:29,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:07:29,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:07:29,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:07:29,011 INFO L87 Difference]: Start difference. First operand 11302 states and 18485 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:07:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:29,845 INFO L93 Difference]: Finished difference Result 22158 states and 38159 transitions. [2021-11-13 18:07:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:07:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2021-11-13 18:07:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:30,106 INFO L225 Difference]: With dead ends: 22158 [2021-11-13 18:07:30,106 INFO L226 Difference]: Without dead ends: 11306 [2021-11-13 18:07:30,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:07:30,195 INFO L933 BasicCegarLoop]: 8626 mSDtfsCounter, 39 mSDsluCounter, 8623 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 17249 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:30,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 17249 Invalid, 12 Unknown, 0 Unchecked, 21.63ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 167.26ms Time] [2021-11-13 18:07:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11306 states. [2021-11-13 18:07:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 11306. [2021-11-13 18:07:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11306 states, 8510 states have (on average 1.5320799059929495) internal successors, (13038), 8556 states have internal predecessors, (13038), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2021-11-13 18:07:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11306 states to 11306 states and 18489 transitions. [2021-11-13 18:07:31,597 INFO L78 Accepts]: Start accepts. Automaton has 11306 states and 18489 transitions. Word has length 83 [2021-11-13 18:07:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:31,598 INFO L470 AbstractCegarLoop]: Abstraction has 11306 states and 18489 transitions. [2021-11-13 18:07:31,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:07:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11306 states and 18489 transitions. [2021-11-13 18:07:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 18:07:31,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:31,612 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:31,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:31,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edda4402-610c-4d17-88ee-bd3b42345965/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 18:07:31,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:07:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1064086359, now seen corresponding path program 1 times [2021-11-13 18:07:31,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:31,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700402267] [2021-11-13 18:07:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:31,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:07:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:07:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:07:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:07:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:07:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:07:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 18:07:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:07:47,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:47,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700402267] [2021-11-13 18:07:47,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700402267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:47,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:47,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:07:47,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508989051] [2021-11-13 18:07:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:47,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:07:47,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:07:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:07:47,563 INFO L87 Difference]: Start difference. First operand 11306 states and 18489 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 11 states have internal predecessors, (64), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-13 18:07:49,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:07:52,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:07:54,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:07:56,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:07:58,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:08:39,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []