./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 15:11:33,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 15:11:33,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 15:11:33,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 15:11:33,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 15:11:33,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 15:11:33,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 15:11:33,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 15:11:33,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 15:11:33,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 15:11:33,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 15:11:33,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 15:11:33,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 15:11:33,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 15:11:33,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 15:11:33,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 15:11:33,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 15:11:33,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 15:11:33,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 15:11:33,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 15:11:33,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 15:11:33,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 15:11:33,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 15:11:33,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 15:11:33,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 15:11:33,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 15:11:33,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 15:11:33,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 15:11:33,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 15:11:33,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 15:11:33,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 15:11:33,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 15:11:33,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 15:11:33,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 15:11:33,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 15:11:33,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 15:11:33,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 15:11:33,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 15:11:33,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 15:11:33,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 15:11:33,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 15:11:33,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 15:11:33,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 15:11:33,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 15:11:33,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 15:11:33,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 15:11:33,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 15:11:33,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 15:11:33,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 15:11:33,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 15:11:33,382 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 15:11:33,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 15:11:33,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 15:11:33,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 15:11:33,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 15:11:33,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 15:11:33,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 15:11:33,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 15:11:33,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 15:11:33,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 15:11:33,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 15:11:33,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 15:11:33,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 15:11:33,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:11:33,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 15:11:33,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 15:11:33,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 15:11:33,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 15:11:33,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 15:11:33,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 15:11:33,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 15:11:33,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 15:11:33,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 15:11:33,386 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2021-12-18 15:11:33,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 15:11:33,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 15:11:33,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 15:11:33,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 15:11:33,637 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 15:11:33,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:11:33,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f665ffde/476b85d89b3f4b7fb1273e7e7162a008/FLAG1e6a4c2dd [2021-12-18 15:11:34,514 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 15:11:34,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:11:34,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f665ffde/476b85d89b3f4b7fb1273e7e7162a008/FLAG1e6a4c2dd [2021-12-18 15:11:34,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f665ffde/476b85d89b3f4b7fb1273e7e7162a008 [2021-12-18 15:11:34,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 15:11:34,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 15:11:34,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 15:11:34,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 15:11:34,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 15:11:34,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:11:34" (1/1) ... [2021-12-18 15:11:34,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4ca9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:34, skipping insertion in model container [2021-12-18 15:11:34,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:11:34" (1/1) ... [2021-12-18 15:11:34,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 15:11:34,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 15:11:36,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-12-18 15:11:36,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:11:37,048 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 15:11:37,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-12-18 15:11:37,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:11:37,655 INFO L208 MainTranslator]: Completed translation [2021-12-18 15:11:37,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37 WrapperNode [2021-12-18 15:11:37,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 15:11:37,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 15:11:37,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 15:11:37,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 15:11:37,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:37,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,334 INFO L137 Inliner]: procedures = 170, calls = 6771, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 16522 [2021-12-18 15:11:38,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 15:11:38,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 15:11:38,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 15:11:38,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 15:11:38,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:38,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:39,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 15:11:39,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 15:11:39,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 15:11:39,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 15:11:39,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (1/1) ... [2021-12-18 15:11:39,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:11:39,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:11:39,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 15:11:39,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 15:11:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-12-18 15:11:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-12-18 15:11:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-12-18 15:11:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-12-18 15:11:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 15:11:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-18 15:11:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-18 15:11:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-12-18 15:11:39,088 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-12-18 15:11:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-12-18 15:11:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-12-18 15:11:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 15:11:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 15:11:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-12-18 15:11:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-12-18 15:11:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 15:11:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-12-18 15:11:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-12-18 15:11:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-12-18 15:11:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-12-18 15:11:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-12-18 15:11:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-12-18 15:11:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-12-18 15:11:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-12-18 15:11:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 15:11:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 15:11:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-12-18 15:11:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-12-18 15:11:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-12-18 15:11:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-12-18 15:11:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 15:11:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 15:11:39,092 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 15:11:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-12-18 15:11:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-12-18 15:11:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 15:11:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 15:11:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-12-18 15:11:39,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-12-18 15:11:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-12-18 15:11:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-12-18 15:11:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-12-18 15:11:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-12-18 15:11:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-18 15:11:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-18 15:11:39,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 15:11:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 15:11:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-18 15:11:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-18 15:11:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-12-18 15:11:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-12-18 15:11:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-12-18 15:11:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-12-18 15:11:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 15:11:39,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 15:11:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 15:11:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 15:11:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-12-18 15:11:39,097 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-12-18 15:11:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 15:11:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 15:11:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 15:11:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-12-18 15:11:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-12-18 15:11:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-12-18 15:11:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-12-18 15:11:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-12-18 15:11:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-12-18 15:11:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-12-18 15:11:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-12-18 15:11:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 15:11:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 15:11:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 15:11:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-12-18 15:11:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-12-18 15:11:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-12-18 15:11:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-12-18 15:11:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-12-18 15:11:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-12-18 15:11:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-12-18 15:11:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-12-18 15:11:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-12-18 15:11:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-12-18 15:11:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 15:11:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 15:11:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-12-18 15:11:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-12-18 15:11:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-12-18 15:11:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-12-18 15:11:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-12-18 15:11:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-12-18 15:11:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-12-18 15:11:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-12-18 15:11:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 15:11:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 15:11:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-12-18 15:11:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-12-18 15:11:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-12-18 15:11:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-12-18 15:11:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 15:11:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 15:11:39,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 15:11:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-12-18 15:11:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-12-18 15:11:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 15:11:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-12-18 15:11:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-12-18 15:11:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 15:11:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 15:11:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-12-18 15:11:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-12-18 15:11:40,322 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 15:11:40,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 15:11:51,411 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 15:11:51,459 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 15:11:51,459 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 15:11:51,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:11:51 BoogieIcfgContainer [2021-12-18 15:11:51,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 15:11:51,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 15:11:51,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 15:11:51,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 15:11:51,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:11:34" (1/3) ... [2021-12-18 15:11:51,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2f91f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:11:51, skipping insertion in model container [2021-12-18 15:11:51,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:11:37" (2/3) ... [2021-12-18 15:11:51,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2f91f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:11:51, skipping insertion in model container [2021-12-18 15:11:51,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:11:51" (3/3) ... [2021-12-18 15:11:51,491 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-18 15:11:51,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 15:11:51,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 15:11:51,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 15:11:51,597 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 [2021-12-18 15:11:51,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 15:11:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2021-12-18 15:11:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 15:11:51,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:11:51,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:11:51,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:11:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:11:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash 715822238, now seen corresponding path program 1 times [2021-12-18 15:11:51,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:11:51,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109278034] [2021-12-18 15:11:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:11:51,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:11:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:11:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:11:52,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:11:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109278034] [2021-12-18 15:11:52,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109278034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:11:52,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:11:52,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 15:11:52,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682612708] [2021-12-18 15:11:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:11:52,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:11:52,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:11:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:11:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:11:52,598 INFO L87 Difference]: Start difference. First operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) 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) [2021-12-18 15:11:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:11:53,368 INFO L93 Difference]: Finished difference Result 10704 states and 17477 transitions. [2021-12-18 15:11:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:11:53,371 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 [2021-12-18 15:11:53,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:11:53,439 INFO L225 Difference]: With dead ends: 10704 [2021-12-18 15:11:53,439 INFO L226 Difference]: Without dead ends: 5381 [2021-12-18 15:11:53,511 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 [2021-12-18 15:11:53,514 INFO L933 BasicCegarLoop]: 8652 mSDtfsCounter, 8384 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 9009 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:11:53,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8384 Valid, 9009 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:11:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2021-12-18 15:11:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 5379. [2021-12-18 15:11:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 4031 states have (on average 1.528404862317043) internal successors, (6161), 4039 states have internal predecessors, (6161), 1295 states have call successors, (1295), 53 states have call predecessors, (1295), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-18 15:11:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8745 transitions. [2021-12-18 15:11:54,669 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8745 transitions. Word has length 8 [2021-12-18 15:11:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:11:54,670 INFO L470 AbstractCegarLoop]: Abstraction has 5379 states and 8745 transitions. [2021-12-18 15:11:54,671 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) [2021-12-18 15:11:54,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8745 transitions. [2021-12-18 15:11:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 15:11:54,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:11:54,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:11:54,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 15:11:54,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:11:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:11:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash 713153290, now seen corresponding path program 1 times [2021-12-18 15:11:54,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:11:54,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238898051] [2021-12-18 15:11:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:11:54,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:11:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:11:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:11:55,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:11:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238898051] [2021-12-18 15:11:55,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238898051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:11:55,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:11:55,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 15:11:55,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475780356] [2021-12-18 15:11:55,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:11:55,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:11:55,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:11:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:11:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:11:55,087 INFO L87 Difference]: Start difference. First operand 5379 states and 8745 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) [2021-12-18 15:11:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:11:55,407 INFO L93 Difference]: Finished difference Result 5381 states and 8746 transitions. [2021-12-18 15:11:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:11:55,408 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 [2021-12-18 15:11:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:11:55,464 INFO L225 Difference]: With dead ends: 5381 [2021-12-18 15:11:55,465 INFO L226 Difference]: Without dead ends: 5378 [2021-12-18 15:11:55,482 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 [2021-12-18 15:11:55,484 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8638 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8638 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:11:55,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8638 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:11:55,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2021-12-18 15:11:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2021-12-18 15:11:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 4031 states have (on average 1.528156784916894) internal successors, (6160), 4038 states have internal predecessors, (6160), 1294 states have call successors, (1294), 53 states have call predecessors, (1294), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-18 15:11:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8743 transitions. [2021-12-18 15:11:56,413 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8743 transitions. Word has length 9 [2021-12-18 15:11:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:11:56,414 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8743 transitions. [2021-12-18 15:11:56,414 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) [2021-12-18 15:11:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8743 transitions. [2021-12-18 15:11:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 15:11:56,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:11:56,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:11:56,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 15:11:56,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:11:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:11:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 630420769, now seen corresponding path program 1 times [2021-12-18 15:11:56,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:11:56,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143828940] [2021-12-18 15:11:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:11:56,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:11:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:11:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:11:56,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:11:56,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143828940] [2021-12-18 15:11:56,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143828940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:11:56,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:11:56,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 15:11:56,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089278371] [2021-12-18 15:11:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:11:56,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:11:56,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:11:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:11:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:11:56,764 INFO L87 Difference]: Start difference. First operand 5378 states and 8743 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) [2021-12-18 15:11:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:11:57,027 INFO L93 Difference]: Finished difference Result 5380 states and 8744 transitions. [2021-12-18 15:11:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:11:57,028 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 [2021-12-18 15:11:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:11:57,076 INFO L225 Difference]: With dead ends: 5380 [2021-12-18 15:11:57,077 INFO L226 Difference]: Without dead ends: 5377 [2021-12-18 15:11:57,089 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 [2021-12-18 15:11:57,090 INFO L933 BasicCegarLoop]: 8641 mSDtfsCounter, 8635 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8635 SdHoareTripleChecker+Valid, 8641 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:11:57,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8635 Valid, 8641 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:11:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2021-12-18 15:11:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 5377. [2021-12-18 15:11:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 4031 states have (on average 1.5279087075167452) internal successors, (6159), 4037 states have internal predecessors, (6159), 1293 states have call successors, (1293), 53 states have call predecessors, (1293), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-18 15:11:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 8741 transitions. [2021-12-18 15:11:58,006 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 8741 transitions. Word has length 10 [2021-12-18 15:11:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:11:58,006 INFO L470 AbstractCegarLoop]: Abstraction has 5377 states and 8741 transitions. [2021-12-18 15:11:58,006 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) [2021-12-18 15:11:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 8741 transitions. [2021-12-18 15:11:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 15:11:58,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:11:58,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:11:58,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 15:11:58,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:11:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:11:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1934282515, now seen corresponding path program 1 times [2021-12-18 15:11:58,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:11:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530722008] [2021-12-18 15:11:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:11:58,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:11:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:11:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:11:58,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:11:58,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530722008] [2021-12-18 15:11:58,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530722008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:11:58,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:11:58,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 15:11:58,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171058777] [2021-12-18 15:11:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:11:58,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:11:58,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:11:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:11:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 15:11:58,378 INFO L87 Difference]: Start difference. First operand 5377 states and 8741 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) [2021-12-18 15:11:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:11:58,997 INFO L93 Difference]: Finished difference Result 16109 states and 26329 transitions. [2021-12-18 15:11:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:11:58,997 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 [2021-12-18 15:11:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:11:59,144 INFO L225 Difference]: With dead ends: 16109 [2021-12-18 15:11:59,144 INFO L226 Difference]: Without dead ends: 10731 [2021-12-18 15:11:59,220 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 [2021-12-18 15:11:59,228 INFO L933 BasicCegarLoop]: 10040 mSDtfsCounter, 8663 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8663 SdHoareTripleChecker+Valid, 18703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:11:59,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8663 Valid, 18703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:11:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10731 states. [2021-12-18 15:12:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10731 to 10727. [2021-12-18 15:12:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 8045 states have (on average 1.5286513362336855) internal successors, (12298), 8055 states have internal predecessors, (12298), 2579 states have call successors, (2579), 104 states have call predecessors, (2579), 102 states have return successors, (2653), 2571 states have call predecessors, (2653), 2573 states have call successors, (2653) [2021-12-18 15:12:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 17530 transitions. [2021-12-18 15:12:01,024 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 17530 transitions. Word has length 11 [2021-12-18 15:12:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:12:01,024 INFO L470 AbstractCegarLoop]: Abstraction has 10727 states and 17530 transitions. [2021-12-18 15:12:01,025 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) [2021-12-18 15:12:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 17530 transitions. [2021-12-18 15:12:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 15:12:01,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:12:01,042 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] [2021-12-18 15:12:01,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 15:12:01,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:12:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:12:01,043 INFO L85 PathProgramCache]: Analyzing trace with hash -724196731, now seen corresponding path program 1 times [2021-12-18 15:12:01,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:12:01,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122240311] [2021-12-18 15:12:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:12:01,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:12:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 15:12:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 15:12:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:12:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:12:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:12:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:12:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 15:12:01,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:12:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122240311] [2021-12-18 15:12:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122240311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:12:01,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:12:01,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 15:12:01,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719886708] [2021-12-18 15:12:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:12:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 15:12:01,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:12:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 15:12:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:12:01,818 INFO L87 Difference]: Start difference. First operand 10727 states and 17530 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 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) [2021-12-18 15:12:10,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:12:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:12:11,458 INFO L93 Difference]: Finished difference Result 21759 states and 35777 transitions. [2021-12-18 15:12:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 15:12:11,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 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 [2021-12-18 15:12:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:12:11,543 INFO L225 Difference]: With dead ends: 21759 [2021-12-18 15:12:11,544 INFO L226 Difference]: Without dead ends: 11035 [2021-12-18 15:12:11,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 15:12:11,642 INFO L933 BasicCegarLoop]: 8503 mSDtfsCounter, 660 mSDsluCounter, 30477 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 1369 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 38980 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1369 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:12:11,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 38980 Invalid, 3989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1369 Valid, 2619 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-12-18 15:12:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-12-18 15:12:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 10875. [2021-12-18 15:12:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10875 states, 8166 states have (on average 1.5274308106784227) internal successors, (12473), 8179 states have internal predecessors, (12473), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2021-12-18 15:12:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 17774 transitions. [2021-12-18 15:12:13,199 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 17774 transitions. Word has length 69 [2021-12-18 15:12:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:12:13,200 INFO L470 AbstractCegarLoop]: Abstraction has 10875 states and 17774 transitions. [2021-12-18 15:12:13,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 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) [2021-12-18 15:12:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 17774 transitions. [2021-12-18 15:12:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 15:12:13,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:12:13,210 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] [2021-12-18 15:12:13,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 15:12:13,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:12:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:12:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash 412085355, now seen corresponding path program 1 times [2021-12-18 15:12:13,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:12:13,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211627814] [2021-12-18 15:12:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:12:13,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:12:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 15:12:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:12:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:12:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:12:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:12:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:12:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 15:12:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 15:12:14,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:12:14,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211627814] [2021-12-18 15:12:14,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211627814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:12:14,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:12:14,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:12:14,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905793443] [2021-12-18 15:12:14,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:12:14,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:12:14,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:12:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:12:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:12:14,301 INFO L87 Difference]: Start difference. First operand 10875 states and 17774 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:12:22,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:12:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:12:22,999 INFO L93 Difference]: Finished difference Result 21877 states and 37622 transitions. [2021-12-18 15:12:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 15:12:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 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 78 [2021-12-18 15:12:23,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:12:23,100 INFO L225 Difference]: With dead ends: 21877 [2021-12-18 15:12:23,100 INFO L226 Difference]: Without dead ends: 11005 [2021-12-18 15:12:23,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:12:23,244 INFO L933 BasicCegarLoop]: 8531 mSDtfsCounter, 347 mSDsluCounter, 13910 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 1299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 22441 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-18 15:12:23,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 22441 Invalid, 3258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1299 Valid, 1958 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-12-18 15:12:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2021-12-18 15:12:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 10879. [2021-12-18 15:12:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10879 states, 8170 states have (on average 1.527172582619339) internal successors, (12477), 8183 states have internal predecessors, (12477), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2021-12-18 15:12:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10879 states to 10879 states and 17778 transitions. [2021-12-18 15:12:24,726 INFO L78 Accepts]: Start accepts. Automaton has 10879 states and 17778 transitions. Word has length 78 [2021-12-18 15:12:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:12:24,731 INFO L470 AbstractCegarLoop]: Abstraction has 10879 states and 17778 transitions. [2021-12-18 15:12:24,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:12:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10879 states and 17778 transitions. [2021-12-18 15:12:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-18 15:12:24,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:12:24,738 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] [2021-12-18 15:12:24,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 15:12:24,738 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:12:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:12:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1296644681, now seen corresponding path program 1 times [2021-12-18 15:12:24,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:12:24,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423603115] [2021-12-18 15:12:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:12:24,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:12:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:12:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:12:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:12:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:12:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:12:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 15:12:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 15:12:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 15:12:26,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:12:26,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423603115] [2021-12-18 15:12:26,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423603115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:12:26,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:12:26,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:12:26,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473005311] [2021-12-18 15:12:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:12:26,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:12:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:12:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:12:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:12:26,298 INFO L87 Difference]: Start difference. First operand 10879 states and 17778 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:12:34,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:12:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:12:34,434 INFO L93 Difference]: Finished difference Result 21885 states and 37630 transitions. [2021-12-18 15:12:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:12:34,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 3 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 79 [2021-12-18 15:12:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:12:34,548 INFO L225 Difference]: With dead ends: 21885 [2021-12-18 15:12:34,548 INFO L226 Difference]: Without dead ends: 11009 [2021-12-18 15:12:34,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:12:34,700 INFO L933 BasicCegarLoop]: 8526 mSDtfsCounter, 384 mSDsluCounter, 13902 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 1301 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 22428 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 15:12:34,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 22428 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1301 Valid, 1965 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 15:12:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11009 states. [2021-12-18 15:12:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11009 to 10883. [2021-12-18 15:12:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10883 states, 8174 states have (on average 1.5269146072914117) internal successors, (12481), 8187 states have internal predecessors, (12481), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2021-12-18 15:12:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 17782 transitions. [2021-12-18 15:12:36,251 INFO L78 Accepts]: Start accepts. Automaton has 10883 states and 17782 transitions. Word has length 79 [2021-12-18 15:12:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:12:36,253 INFO L470 AbstractCegarLoop]: Abstraction has 10883 states and 17782 transitions. [2021-12-18 15:12:36,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 15:12:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10883 states and 17782 transitions. [2021-12-18 15:12:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-18 15:12:36,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:12:36,259 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] [2021-12-18 15:12:36,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 15:12:36,260 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:12:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:12:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 413538329, now seen corresponding path program 1 times [2021-12-18 15:12:36,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:12:36,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527327532] [2021-12-18 15:12:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:12:36,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:12:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:12:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:12:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:12:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:12:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:12:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:12:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:12:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:12:38,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:12:38,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527327532] [2021-12-18 15:12:38,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527327532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:12:38,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:12:38,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:12:38,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513125512] [2021-12-18 15:12:38,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:12:38,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:12:38,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:12:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:12:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:12:38,971 INFO L87 Difference]: Start difference. First operand 10883 states and 17782 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:12:47,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:12:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:12:48,086 INFO L93 Difference]: Finished difference Result 21919 states and 37664 transitions. [2021-12-18 15:12:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:12:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 80 [2021-12-18 15:12:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:12:48,191 INFO L225 Difference]: With dead ends: 21919 [2021-12-18 15:12:48,191 INFO L226 Difference]: Without dead ends: 11039 [2021-12-18 15:12:48,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:12:48,291 INFO L933 BasicCegarLoop]: 8546 mSDtfsCounter, 352 mSDsluCounter, 39290 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 1300 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 47836 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-18 15:12:48,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 47836 Invalid, 3950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 2649 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-12-18 15:12:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2021-12-18 15:12:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 10902. [2021-12-18 15:12:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10902 states, 8189 states have (on average 1.5259494443766028) internal successors, (12496), 8202 states have internal predecessors, (12496), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 113 states have return successors, (4295), 2597 states have call predecessors, (4295), 2593 states have call successors, (4295) [2021-12-18 15:12:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10902 states to 10902 states and 19390 transitions. [2021-12-18 15:12:51,158 INFO L78 Accepts]: Start accepts. Automaton has 10902 states and 19390 transitions. Word has length 80 [2021-12-18 15:12:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:12:51,159 INFO L470 AbstractCegarLoop]: Abstraction has 10902 states and 19390 transitions. [2021-12-18 15:12:51,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:12:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 10902 states and 19390 transitions. [2021-12-18 15:12:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-18 15:12:51,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:12:51,165 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] [2021-12-18 15:12:51,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 15:12:51,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:12:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:12:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2116752541, now seen corresponding path program 1 times [2021-12-18 15:12:51,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:12:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458741305] [2021-12-18 15:12:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:12:51,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:12:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:12:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:12:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:12:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:12:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:12:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:12:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:12:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:12:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:12:52,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:12:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458741305] [2021-12-18 15:12:52,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458741305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:12:52,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:12:52,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:12:52,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998071353] [2021-12-18 15:12:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:12:52,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:12:52,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:12:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:12:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:12:52,867 INFO L87 Difference]: Start difference. First operand 10902 states and 19390 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:13:01,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:13:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:13:01,832 INFO L93 Difference]: Finished difference Result 21946 states and 39280 transitions. [2021-12-18 15:13:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:13:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 80 [2021-12-18 15:13:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:13:01,937 INFO L225 Difference]: With dead ends: 21946 [2021-12-18 15:13:01,937 INFO L226 Difference]: Without dead ends: 11047 [2021-12-18 15:13:02,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:13:02,059 INFO L933 BasicCegarLoop]: 8546 mSDtfsCounter, 353 mSDsluCounter, 39291 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 1300 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 47837 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:13:02,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 47837 Invalid, 3950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 2649 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-12-18 15:13:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2021-12-18 15:13:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 10906. [2021-12-18 15:13:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10906 states, 8193 states have (on average 1.5256926644696693) internal successors, (12500), 8202 states have internal predecessors, (12500), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 113 states have return successors, (4295), 2601 states have call predecessors, (4295), 2593 states have call successors, (4295) [2021-12-18 15:13:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10906 states to 10906 states and 19394 transitions. [2021-12-18 15:13:04,648 INFO L78 Accepts]: Start accepts. Automaton has 10906 states and 19394 transitions. Word has length 80 [2021-12-18 15:13:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:13:04,649 INFO L470 AbstractCegarLoop]: Abstraction has 10906 states and 19394 transitions. [2021-12-18 15:13:04,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:13:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10906 states and 19394 transitions. [2021-12-18 15:13:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-18 15:13:04,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:13:04,658 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] [2021-12-18 15:13:04,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 15:13:04,659 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:13:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:13:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1234235597, now seen corresponding path program 1 times [2021-12-18 15:13:04,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:13:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048576251] [2021-12-18 15:13:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:13:04,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:13:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 15:13:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 15:13:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 15:13:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 15:13:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:13:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:13:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:13:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:13:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:13:05,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:13:05,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048576251] [2021-12-18 15:13:05,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048576251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:13:05,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:13:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 15:13:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331237293] [2021-12-18 15:13:05,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:13:05,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 15:13:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:13:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 15:13:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 15:13:05,156 INFO L87 Difference]: Start difference. First operand 10906 states and 19394 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:13:30,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:13:34,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:13:37,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:13:38,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:13:38,635 INFO L93 Difference]: Finished difference Result 28121 states and 50471 transitions. [2021-12-18 15:13:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 15:13:38,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2021-12-18 15:13:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:13:38,776 INFO L225 Difference]: With dead ends: 28121 [2021-12-18 15:13:38,776 INFO L226 Difference]: Without dead ends: 17218 [2021-12-18 15:13:38,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:13:38,901 INFO L933 BasicCegarLoop]: 8685 mSDtfsCounter, 6236 mSDsluCounter, 36128 mSDsCounter, 0 mSdLazyCounter, 17259 mSolverCounterSat, 4110 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8156 SdHoareTripleChecker+Valid, 44813 SdHoareTripleChecker+Invalid, 21372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4110 IncrementalHoareTripleChecker+Valid, 17259 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:13:38,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8156 Valid, 44813 Invalid, 21372 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4110 Valid, 17259 Invalid, 3 Unknown, 0 Unchecked, 32.2s Time] [2021-12-18 15:13:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17218 states. [2021-12-18 15:13:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17218 to 10916. [2021-12-18 15:13:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10916 states, 8201 states have (on average 1.525179856115108) internal successors, (12508), 8210 states have internal predecessors, (12508), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 115 states have return successors, (4335), 2603 states have call predecessors, (4335), 2593 states have call successors, (4335) [2021-12-18 15:13:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 19442 transitions. [2021-12-18 15:13:43,060 INFO L78 Accepts]: Start accepts. Automaton has 10916 states and 19442 transitions. Word has length 76 [2021-12-18 15:13:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:13:43,061 INFO L470 AbstractCegarLoop]: Abstraction has 10916 states and 19442 transitions. [2021-12-18 15:13:43,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 15:13:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10916 states and 19442 transitions. [2021-12-18 15:13:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 15:13:43,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:13:43,070 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] [2021-12-18 15:13:43,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 15:13:43,071 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:13:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:13:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash 838528791, now seen corresponding path program 1 times [2021-12-18 15:13:43,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:13:43,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348243733] [2021-12-18 15:13:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:13:43,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:13:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:13:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:13:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:13:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:13:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:13:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:13:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:13:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:13:43,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:13:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348243733] [2021-12-18 15:13:43,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348243733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:13:43,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:13:43,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:13:43,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852914831] [2021-12-18 15:13:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:13:43,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:13:43,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:13:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:13:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:13:43,525 INFO L87 Difference]: Start difference. First operand 10916 states and 19442 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:13:52,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:13:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:13:52,528 INFO L93 Difference]: Finished difference Result 21975 states and 42603 transitions. [2021-12-18 15:13:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 15:13:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 83 [2021-12-18 15:13:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:13:52,642 INFO L225 Difference]: With dead ends: 21975 [2021-12-18 15:13:52,642 INFO L226 Difference]: Without dead ends: 11062 [2021-12-18 15:13:52,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:13:52,794 INFO L933 BasicCegarLoop]: 9329 mSDtfsCounter, 351 mSDsluCounter, 15475 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 1299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 24804 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-18 15:13:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 24804 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1299 Valid, 1987 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-12-18 15:13:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11062 states. [2021-12-18 15:13:56,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 10920. [2021-12-18 15:13:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 8205 states have (on average 1.5249238269347958) internal successors, (12512), 8214 states have internal predecessors, (12512), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 115 states have return successors, (4335), 2603 states have call predecessors, (4335), 2593 states have call successors, (4335) [2021-12-18 15:13:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 19446 transitions. [2021-12-18 15:13:56,756 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 19446 transitions. Word has length 83 [2021-12-18 15:13:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:13:56,757 INFO L470 AbstractCegarLoop]: Abstraction has 10920 states and 19446 transitions. [2021-12-18 15:13:56,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 15:13:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 19446 transitions. [2021-12-18 15:13:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 15:13:56,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:13:56,764 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] [2021-12-18 15:13:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 15:13:56,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:13:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:13:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1868090603, now seen corresponding path program 1 times [2021-12-18 15:13:56,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:13:56,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754136487] [2021-12-18 15:13:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:13:56,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:13:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:59,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:13:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 15:13:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:13:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 15:13:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:14:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:14:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:14:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:14:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:14:00,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:14:00,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754136487] [2021-12-18 15:14:00,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754136487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:14:00,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:14:00,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 15:14:00,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664492175] [2021-12-18 15:14:00,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:14:00,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 15:14:00,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:14:00,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 15:14:00,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-18 15:14:00,122 INFO L87 Difference]: Start difference. First operand 10920 states and 19446 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-12-18 15:14:29,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:14:31,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:14:34,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:14:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:14:36,235 INFO L93 Difference]: Finished difference Result 22691 states and 40308 transitions. [2021-12-18 15:14:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 15:14:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 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) Word has length 83 [2021-12-18 15:14:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:14:36,362 INFO L225 Difference]: With dead ends: 22691 [2021-12-18 15:14:36,363 INFO L226 Difference]: Without dead ends: 11774 [2021-12-18 15:14:36,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-12-18 15:14:36,467 INFO L933 BasicCegarLoop]: 8450 mSDtfsCounter, 2026 mSDsluCounter, 20750 mSDsCounter, 0 mSdLazyCounter, 7996 mSolverCounterSat, 3084 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 29200 SdHoareTripleChecker+Invalid, 11083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3084 IncrementalHoareTripleChecker+Valid, 7996 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:14:36,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 29200 Invalid, 11083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3084 Valid, 7996 Invalid, 3 Unknown, 0 Unchecked, 34.7s Time] [2021-12-18 15:14:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11774 states. [2021-12-18 15:14:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11774 to 11377. [2021-12-18 15:14:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11377 states, 8536 states have (on average 1.522610121836926) internal successors, (12997), 8578 states have internal predecessors, (12997), 2690 states have call successors, (2690), 146 states have call predecessors, (2690), 150 states have return successors, (4458), 2656 states have call predecessors, (4458), 2684 states have call successors, (4458) [2021-12-18 15:14:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11377 states to 11377 states and 20145 transitions. [2021-12-18 15:14:39,156 INFO L78 Accepts]: Start accepts. Automaton has 11377 states and 20145 transitions. Word has length 83 [2021-12-18 15:14:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:14:39,157 INFO L470 AbstractCegarLoop]: Abstraction has 11377 states and 20145 transitions. [2021-12-18 15:14:39,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-12-18 15:14:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 11377 states and 20145 transitions. [2021-12-18 15:14:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-18 15:14:39,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:14:39,167 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] [2021-12-18 15:14:39,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 15:14:39,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:14:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:14:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1078299869, now seen corresponding path program 1 times [2021-12-18 15:14:39,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:14:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071815553] [2021-12-18 15:14:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:14:39,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:14:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 15:14:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 15:14:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 15:14:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 15:14:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:14:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:14:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:14:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 15:14:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:14:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 15:14:39,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:14:39,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071815553] [2021-12-18 15:14:39,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071815553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:14:39,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:14:39,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:14:39,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643451278] [2021-12-18 15:14:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:14:39,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:14:39,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:14:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:14:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:14:39,697 INFO L87 Difference]: Start difference. First operand 11377 states and 20145 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 15:15:00,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:15:04,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 15:15:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:15:06,110 INFO L93 Difference]: Finished difference Result 16196 states and 29030 transitions. [2021-12-18 15:15:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 15:15:06,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2021-12-18 15:15:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:15:06,273 INFO L225 Difference]: With dead ends: 16196 [2021-12-18 15:15:06,274 INFO L226 Difference]: Without dead ends: 16193 [2021-12-18 15:15:06,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:15:06,308 INFO L933 BasicCegarLoop]: 8142 mSDtfsCounter, 5698 mSDsluCounter, 12150 mSDsCounter, 0 mSdLazyCounter, 10484 mSolverCounterSat, 3910 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6716 SdHoareTripleChecker+Valid, 20292 SdHoareTripleChecker+Invalid, 14396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3910 IncrementalHoareTripleChecker+Valid, 10484 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-12-18 15:15:06,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6716 Valid, 20292 Invalid, 14396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3910 Valid, 10484 Invalid, 2 Unknown, 0 Unchecked, 25.5s Time] [2021-12-18 15:15:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16193 states. [2021-12-18 15:15:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16193 to 11376. [2021-12-18 15:15:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11376 states, 8536 states have (on average 1.5223758200562325) internal successors, (12995), 8577 states have internal predecessors, (12995), 2689 states have call successors, (2689), 146 states have call predecessors, (2689), 150 states have return successors, (4458), 2656 states have call predecessors, (4458), 2684 states have call successors, (4458) [2021-12-18 15:15:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11376 states to 11376 states and 20142 transitions. [2021-12-18 15:15:10,085 INFO L78 Accepts]: Start accepts. Automaton has 11376 states and 20142 transitions. Word has length 79 [2021-12-18 15:15:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:15:10,085 INFO L470 AbstractCegarLoop]: Abstraction has 11376 states and 20142 transitions. [2021-12-18 15:15:10,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 15:15:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 11376 states and 20142 transitions. [2021-12-18 15:15:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-18 15:15:10,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:15:10,095 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, 1, 1, 1, 1, 1] [2021-12-18 15:15:10,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 15:15:10,095 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:15:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:15:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash -196360421, now seen corresponding path program 1 times [2021-12-18 15:15:10,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:15:10,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840298346] [2021-12-18 15:15:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:15:10,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15