./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.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 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:21:15,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:21:15,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:21:15,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:21:15,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:21:15,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:21:15,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:21:15,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:21:15,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:21:15,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:21:15,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:21:15,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:21:15,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:21:15,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:21:15,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:21:15,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:21:15,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:21:15,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:21:15,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:21:15,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:21:15,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:21:15,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:21:15,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:21:15,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:21:15,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:21:15,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:21:15,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:21:15,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:21:15,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:21:15,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:21:15,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:21:15,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:21:15,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:21:15,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:21:15,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:21:15,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:21:15,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:21:15,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:21:15,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:21:15,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:21:15,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:21:15,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:21:15,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:21:15,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:21:15,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:21:15,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:21:15,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:21:15,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:21:15,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:21:15,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:21:15,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:21:15,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:21:15,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:21:15,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:21:15,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:21:15,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:21:15,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2021-12-22 14:21:15,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:21:15,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:21:15,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:21:15,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:21:15,580 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:21:15,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-22 14:21:15,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976bceebb/f96ea1bc531546a7bc50ccb80f026f4c/FLAG0d95c6c9c [2021-12-22 14:21:16,281 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:21:16,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-22 14:21:16,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976bceebb/f96ea1bc531546a7bc50ccb80f026f4c/FLAG0d95c6c9c [2021-12-22 14:21:16,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976bceebb/f96ea1bc531546a7bc50ccb80f026f4c [2021-12-22 14:21:16,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:21:16,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:21:16,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:21:16,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:21:16,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:21:16,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:21:16" (1/1) ... [2021-12-22 14:21:16,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a492f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:16, skipping insertion in model container [2021-12-22 14:21:16,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:21:16" (1/1) ... [2021-12-22 14:21:16,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:21:16,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:21:18,148 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-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-12-22 14:21:18,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:21:18,332 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:21:18,679 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-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-12-22 14:21:18,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:21:18,801 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:21:18,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18 WrapperNode [2021-12-22 14:21:18,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:21:18,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:21:18,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:21:18,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:21:18,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,284 INFO L137 Inliner]: procedures = 189, calls = 6921, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 16566 [2021-12-22 14:21:19,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:21:19,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:21:19,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:21:19,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:21:19,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:21:19,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:21:19,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:21:19,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:21:19,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (1/1) ... [2021-12-22 14:21:19,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:21:19,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:21:19,965 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) [2021-12-22 14:21:20,023 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 [2021-12-22 14:21:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2021-12-22 14:21:20,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2021-12-22 14:21:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-12-22 14:21:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-12-22 14:21:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-12-22 14:21:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-12-22 14:21:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:21:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:21:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:21:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-12-22 14:21:20,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-12-22 14:21:20,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2021-12-22 14:21:20,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2021-12-22 14:21:20,089 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-12-22 14:21:20,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-12-22 14:21:20,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:21:20,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:21:20,089 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-12-22 14:21:20,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-12-22 14:21:20,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:21:20,090 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-12-22 14:21:20,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-12-22 14:21:20,090 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-12-22 14:21:20,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-12-22 14:21:20,090 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-12-22 14:21:20,090 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-12-22 14:21:20,090 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:21:20,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:21:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-12-22 14:21:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-12-22 14:21:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-12-22 14:21:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-12-22 14:21:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:21:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:21:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:21:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-12-22 14:21:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-12-22 14:21:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:21:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:21:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-12-22 14:21:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-12-22 14:21:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-12-22 14:21:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-12-22 14:21:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-12-22 14:21:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-12-22 14:21:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-22 14:21:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-22 14:21:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:21:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:21:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-22 14:21:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-22 14:21:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-12-22 14:21:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-12-22 14:21:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:21:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:21:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-22 14:21:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-22 14:21:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-12-22 14:21:20,095 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-12-22 14:21:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-12-22 14:21:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-12-22 14:21:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-12-22 14:21:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-12-22 14:21:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:21:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:21:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:21:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-12-22 14:21:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-12-22 14:21:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-12-22 14:21:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-12-22 14:21:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-12-22 14:21:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-12-22 14:21:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-12-22 14:21:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-12-22 14:21:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-12-22 14:21:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-12-22 14:21:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:21:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:21:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-12-22 14:21:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-12-22 14:21:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-12-22 14:21:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-12-22 14:21:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-12-22 14:21:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-12-22 14:21:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-12-22 14:21:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-12-22 14:21:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:21:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:21:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-12-22 14:21:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-12-22 14:21:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-12-22 14:21:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-12-22 14:21:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:21:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-22 14:21:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-22 14:21:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2021-12-22 14:21:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2021-12-22 14:21:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-12-22 14:21:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-12-22 14:21:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:21:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-12-22 14:21:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-12-22 14:21:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:21:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:21:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-12-22 14:21:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-12-22 14:21:21,222 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:21:21,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:21:35,688 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:21:35,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:21:35,755 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:21:35,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:21:35 BoogieIcfgContainer [2021-12-22 14:21:35,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:21:35,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:21:35,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:21:35,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:21:35,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:21:16" (1/3) ... [2021-12-22 14:21:35,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce5dd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:21:35, skipping insertion in model container [2021-12-22 14:21:35,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:18" (2/3) ... [2021-12-22 14:21:35,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce5dd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:21:35, skipping insertion in model container [2021-12-22 14:21:35,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:21:35" (3/3) ... [2021-12-22 14:21:35,789 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-22 14:21:35,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:21:35,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:21:35,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:21:35,931 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 [2021-12-22 14:21:35,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:21:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2021-12-22 14:21:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 14:21:36,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:36,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:36,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1796736915, now seen corresponding path program 1 times [2021-12-22 14:21:36,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975344719] [2021-12-22 14:21:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:36,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:36,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975344719] [2021-12-22 14:21:36,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975344719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:36,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:36,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:36,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475896631] [2021-12-22 14:21:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:36,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:36,771 INFO L87 Difference]: Start difference. First operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:37,252 INFO L93 Difference]: Finished difference Result 10596 states and 17366 transitions. [2021-12-22 14:21:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:37,254 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 [2021-12-22 14:21:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:37,319 INFO L225 Difference]: With dead ends: 10596 [2021-12-22 14:21:37,319 INFO L226 Difference]: Without dead ends: 5294 [2021-12-22 14:21:37,385 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 [2021-12-22 14:21:37,388 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8639 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8639 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:21:37,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8639 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:21:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-12-22 14:21:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5294. [2021-12-22 14:21:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 3970 states have (on average 1.5357682619647355) internal successors, (6097), 3981 states have internal predecessors, (6097), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2021-12-22 14:21:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8640 transitions. [2021-12-22 14:21:38,128 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8640 transitions. Word has length 8 [2021-12-22 14:21:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:38,128 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 8640 transitions. [2021-12-22 14:21:38,128 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) [2021-12-22 14:21:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8640 transitions. [2021-12-22 14:21:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 14:21:38,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:38,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:38,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:21:38,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -138225567, now seen corresponding path program 1 times [2021-12-22 14:21:38,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:38,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623301491] [2021-12-22 14:21:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:38,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:38,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:38,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623301491] [2021-12-22 14:21:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623301491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:38,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:38,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:38,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527838951] [2021-12-22 14:21:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:38,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:38,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:38,428 INFO L87 Difference]: Start difference. First operand 5294 states and 8640 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:38,741 INFO L93 Difference]: Finished difference Result 10658 states and 17395 transitions. [2021-12-22 14:21:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:38,741 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 [2021-12-22 14:21:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:38,783 INFO L225 Difference]: With dead ends: 10658 [2021-12-22 14:21:38,783 INFO L226 Difference]: Without dead ends: 5367 [2021-12-22 14:21:38,825 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 [2021-12-22 14:21:38,827 INFO L933 BasicCegarLoop]: 8640 mSDtfsCounter, 8370 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8370 SdHoareTripleChecker+Valid, 9007 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:21:38,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8370 Valid, 9007 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:21:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-12-22 14:21:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5364. [2021-12-22 14:21:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 4032 states have (on average 1.5364583333333333) internal successors, (6195), 4041 states have internal predecessors, (6195), 1279 states have call successors, (1279), 54 states have call predecessors, (1279), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-22 14:21:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 8745 transitions. [2021-12-22 14:21:39,644 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 8745 transitions. Word has length 9 [2021-12-22 14:21:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 5364 states and 8745 transitions. [2021-12-22 14:21:39,645 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) [2021-12-22 14:21:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 8745 transitions. [2021-12-22 14:21:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 14:21:39,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:39,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:39,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:21:39,646 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash 7484502, now seen corresponding path program 1 times [2021-12-22 14:21:39,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:39,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109571973] [2021-12-22 14:21:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:39,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:40,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:40,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109571973] [2021-12-22 14:21:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109571973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:40,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:40,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:40,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940215548] [2021-12-22 14:21:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:40,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:40,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:40,013 INFO L87 Difference]: Start difference. First operand 5364 states and 8745 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:40,232 INFO L93 Difference]: Finished difference Result 5366 states and 8746 transitions. [2021-12-22 14:21:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:40,233 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 [2021-12-22 14:21:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:40,278 INFO L225 Difference]: With dead ends: 5366 [2021-12-22 14:21:40,278 INFO L226 Difference]: Without dead ends: 5363 [2021-12-22 14:21:40,287 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 [2021-12-22 14:21:40,291 INFO L933 BasicCegarLoop]: 8633 mSDtfsCounter, 8627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8627 SdHoareTripleChecker+Valid, 8633 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 [2021-12-22 14:21:40,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8627 Valid, 8633 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:21:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-12-22 14:21:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5363. [2021-12-22 14:21:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 4032 states have (on average 1.5362103174603174) internal successors, (6194), 4040 states have internal predecessors, (6194), 1278 states have call successors, (1278), 54 states have call predecessors, (1278), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-22 14:21:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 8743 transitions. [2021-12-22 14:21:40,963 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 8743 transitions. Word has length 10 [2021-12-22 14:21:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:40,963 INFO L470 AbstractCegarLoop]: Abstraction has 5363 states and 8743 transitions. [2021-12-22 14:21:40,963 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) [2021-12-22 14:21:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 8743 transitions. [2021-12-22 14:21:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 14:21:40,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:40,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:40,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:21:40,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 229534212, now seen corresponding path program 1 times [2021-12-22 14:21:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776531760] [2021-12-22 14:21:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:40,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:41,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776531760] [2021-12-22 14:21:41,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776531760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:41,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:41,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56619940] [2021-12-22 14:21:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:41,199 INFO L87 Difference]: Start difference. First operand 5363 states and 8743 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:41,391 INFO L93 Difference]: Finished difference Result 5365 states and 8744 transitions. [2021-12-22 14:21:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:41,392 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 [2021-12-22 14:21:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:41,430 INFO L225 Difference]: With dead ends: 5365 [2021-12-22 14:21:41,431 INFO L226 Difference]: Without dead ends: 5362 [2021-12-22 14:21:41,439 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 [2021-12-22 14:21:41,440 INFO L933 BasicCegarLoop]: 8631 mSDtfsCounter, 8624 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8624 SdHoareTripleChecker+Valid, 8631 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 [2021-12-22 14:21:41,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8624 Valid, 8631 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:21:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-12-22 14:21:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5362. [2021-12-22 14:21:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5362 states, 4032 states have (on average 1.5359623015873016) internal successors, (6193), 4039 states have internal predecessors, (6193), 1277 states have call successors, (1277), 54 states have call predecessors, (1277), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-22 14:21:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 8741 transitions. [2021-12-22 14:21:42,109 INFO L78 Accepts]: Start accepts. Automaton has 5362 states and 8741 transitions. Word has length 11 [2021-12-22 14:21:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 5362 states and 8741 transitions. [2021-12-22 14:21:42,109 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) [2021-12-22 14:21:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5362 states and 8741 transitions. [2021-12-22 14:21:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 14:21:42,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:42,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:42,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:21:42,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1476854503, now seen corresponding path program 1 times [2021-12-22 14:21:42,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687439882] [2021-12-22 14:21:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:42,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:42,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687439882] [2021-12-22 14:21:42,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687439882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:42,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:42,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:42,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849068732] [2021-12-22 14:21:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:42,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:42,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:42,351 INFO L87 Difference]: Start difference. First operand 5362 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:42,683 INFO L93 Difference]: Finished difference Result 5364 states and 8742 transitions. [2021-12-22 14:21:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 14:21:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:42,769 INFO L225 Difference]: With dead ends: 5364 [2021-12-22 14:21:42,769 INFO L226 Difference]: Without dead ends: 5361 [2021-12-22 14:21:42,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:42,791 INFO L933 BasicCegarLoop]: 8629 mSDtfsCounter, 8621 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8621 SdHoareTripleChecker+Valid, 8629 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 [2021-12-22 14:21:42,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8621 Valid, 8629 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:21:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-12-22 14:21:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 5361. [2021-12-22 14:21:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4032 states have (on average 1.5357142857142858) internal successors, (6192), 4038 states have internal predecessors, (6192), 1276 states have call successors, (1276), 54 states have call predecessors, (1276), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-22 14:21:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8739 transitions. [2021-12-22 14:21:43,505 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8739 transitions. Word has length 12 [2021-12-22 14:21:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:43,506 INFO L470 AbstractCegarLoop]: Abstraction has 5361 states and 8739 transitions. [2021-12-22 14:21:43,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8739 transitions. [2021-12-22 14:21:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 14:21:43,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:43,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:21:43,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:21:43,508 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1459675047, now seen corresponding path program 1 times [2021-12-22 14:21:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092571793] [2021-12-22 14:21:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:43,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:21:43,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092571793] [2021-12-22 14:21:43,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092571793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:43,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:43,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:21:43,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086954919] [2021-12-22 14:21:43,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:43,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:21:43,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:21:43,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:21:43,814 INFO L87 Difference]: Start difference. First operand 5361 states and 8739 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:44,267 INFO L93 Difference]: Finished difference Result 16061 states and 26323 transitions. [2021-12-22 14:21:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:21:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 14:21:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:44,356 INFO L225 Difference]: With dead ends: 16061 [2021-12-22 14:21:44,357 INFO L226 Difference]: Without dead ends: 10697 [2021-12-22 14:21:44,408 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 [2021-12-22 14:21:44,410 INFO L933 BasicCegarLoop]: 10012 mSDtfsCounter, 8649 mSDsluCounter, 8651 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8649 SdHoareTripleChecker+Valid, 18663 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 [2021-12-22 14:21:44,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8649 Valid, 18663 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:21:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-12-22 14:21:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10688. [2021-12-22 14:21:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10688 states, 8041 states have (on average 1.5368735231936326) internal successors, (12358), 8052 states have internal predecessors, (12358), 2544 states have call successors, (2544), 105 states have call predecessors, (2544), 102 states have return successors, (2617), 2534 states have call predecessors, (2617), 2537 states have call successors, (2617) [2021-12-22 14:21:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 17519 transitions. [2021-12-22 14:21:45,795 INFO L78 Accepts]: Start accepts. Automaton has 10688 states and 17519 transitions. Word has length 13 [2021-12-22 14:21:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:45,796 INFO L470 AbstractCegarLoop]: Abstraction has 10688 states and 17519 transitions. [2021-12-22 14:21:45,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:21:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10688 states and 17519 transitions. [2021-12-22 14:21:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 14:21:45,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:45,808 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] [2021-12-22 14:21:45,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:21:45,808 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -836050860, now seen corresponding path program 1 times [2021-12-22 14:21:45,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:45,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488693567] [2021-12-22 14:21:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:45,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:21:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:21:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:21:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:21:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:21:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:21:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:21:46,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488693567] [2021-12-22 14:21:46,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488693567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:46,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:46,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:21:46,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845523160] [2021-12-22 14:21:46,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:46,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:21:46,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:46,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:21:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:21:46,332 INFO L87 Difference]: Start difference. First operand 10688 states and 17519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:21:54,100 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 [] [2021-12-22 14:21:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:54,492 INFO L93 Difference]: Finished difference Result 21624 states and 35542 transitions. [2021-12-22 14:21:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:21:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2021-12-22 14:21:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:54,565 INFO L225 Difference]: With dead ends: 21624 [2021-12-22 14:21:54,566 INFO L226 Difference]: Without dead ends: 10939 [2021-12-22 14:21:54,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:21:54,634 INFO L933 BasicCegarLoop]: 8509 mSDtfsCounter, 509 mSDsluCounter, 22191 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 1325 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 30700 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:21:54,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 30700 Invalid, 3660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1325 Valid, 2334 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-12-22 14:21:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-12-22 14:21:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10805. [2021-12-22 14:21:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 8137 states have (on average 1.5363155954282905) internal successors, (12501), 8150 states have internal predecessors, (12501), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2021-12-22 14:21:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 17702 transitions. [2021-12-22 14:21:55,919 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 17702 transitions. Word has length 69 [2021-12-22 14:21:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:55,919 INFO L470 AbstractCegarLoop]: Abstraction has 10805 states and 17702 transitions. [2021-12-22 14:21:55,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:21:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 17702 transitions. [2021-12-22 14:21:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 14:21:55,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:55,926 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] [2021-12-22 14:21:55,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:21:55,926 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash 122332334, now seen corresponding path program 1 times [2021-12-22 14:21:55,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778407622] [2021-12-22 14:21:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:55,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:21:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:21:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:21:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:21:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:21:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:21:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:21:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:21:57,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778407622] [2021-12-22 14:21:57,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778407622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:57,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:57,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 14:21:57,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841272008] [2021-12-22 14:21:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:57,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 14:21:57,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 14:21:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:21:57,137 INFO L87 Difference]: Start difference. First operand 10805 states and 17702 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)