./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:24:47,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:24:47,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:24:47,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:24:47,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:24:47,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:24:47,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:24:47,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:24:47,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:24:47,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:24:47,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:24:47,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:24:47,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:24:47,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:24:47,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:24:47,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:24:47,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:24:47,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:24:47,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:24:47,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:24:47,256 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:24:47,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:24:47,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:24:47,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:24:47,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:24:47,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:24:47,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:24:47,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:24:47,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:24:47,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:24:47,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:24:47,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:24:47,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:24:47,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:24:47,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:24:47,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:24:47,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:24:47,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:24:47,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:24:47,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:24:47,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:24:47,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:24:47,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:24:47,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:24:47,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:24:47,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:24:47,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:24:47,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:24:47,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:24:47,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:24:47,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:24:47,299 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:24:47,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:24:47,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:24:47,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:24:47,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:24:47,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:24:47,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:24:47,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:24:47,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:24:47,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:24:47,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:24:47,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:24:47,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:24:47,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:24:47,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:24:47,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:24:47,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:24:47,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-07-22 23:24:47,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:24:47,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:24:47,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:24:47,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:24:47,473 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:24:47,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-22 23:24:47,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06d5b290/57769dab0cdb44ed88683d5ef8dc1f9b/FLAGa70a80e25 [2022-07-22 23:24:48,080 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:24:48,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-22 23:24:48,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06d5b290/57769dab0cdb44ed88683d5ef8dc1f9b/FLAGa70a80e25 [2022-07-22 23:24:48,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06d5b290/57769dab0cdb44ed88683d5ef8dc1f9b [2022-07-22 23:24:48,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:24:48,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:24:48,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:24:48,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:24:48,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:24:48,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:48" (1/1) ... [2022-07-22 23:24:48,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e29e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:48, skipping insertion in model container [2022-07-22 23:24:48,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:48" (1/1) ... [2022-07-22 23:24:48,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:24:48,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:24:49,512 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-07-22 23:24:49,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:24:49,625 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:24:49,831 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-07-22 23:24:49,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:24:50,009 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:24:50,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50 WrapperNode [2022-07-22 23:24:50,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:24:50,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:24:50,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:24:50,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:24:50,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,319 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7953 [2022-07-22 23:24:50,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:24:50,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:24:50,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:24:50,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:24:50,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:24:50,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:24:50,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:24:50,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:24:50,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (1/1) ... [2022-07-22 23:24:50,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:24:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:24:50,594 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) [2022-07-22 23:24:50,596 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 [2022-07-22 23:24:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-07-22 23:24:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-07-22 23:24:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-22 23:24:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-22 23:24:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-07-22 23:24:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-07-22 23:24:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-22 23:24:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-22 23:24:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-07-22 23:24:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-07-22 23:24:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:24:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:24:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-07-22 23:24:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-07-22 23:24:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-07-22 23:24:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-07-22 23:24:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-07-22 23:24:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-07-22 23:24:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-07-22 23:24:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-07-22 23:24:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:24:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:24:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:24:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:24:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-22 23:24:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-22 23:24:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-07-22 23:24:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-07-22 23:24:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:24:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:24:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-22 23:24:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-22 23:24:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:24:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-07-22 23:24:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-07-22 23:24:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-22 23:24:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-22 23:24:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-22 23:24:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-22 23:24:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-22 23:24:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-22 23:24:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-07-22 23:24:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-07-22 23:24:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-22 23:24:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-22 23:24:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:24:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-07-22 23:24:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-07-22 23:24:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-22 23:24:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-22 23:24:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:24:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:24:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-22 23:24:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-22 23:24:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 23:24:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-07-22 23:24:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-07-22 23:24:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:24:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-22 23:24:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:24:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-22 23:24:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:24:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:24:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:24:51,370 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:24:51,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:24:56,141 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:24:56,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:24:56,161 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:24:56,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:56 BoogieIcfgContainer [2022-07-22 23:24:56,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:24:56,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:24:56,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:24:56,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:24:56,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:24:48" (1/3) ... [2022-07-22 23:24:56,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1354af32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:56, skipping insertion in model container [2022-07-22 23:24:56,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:50" (2/3) ... [2022-07-22 23:24:56,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1354af32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:56, skipping insertion in model container [2022-07-22 23:24:56,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:56" (3/3) ... [2022-07-22 23:24:56,173 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-22 23:24:56,182 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:24:56,183 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:24:56,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:24:56,261 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7583d7a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15fbe288 [2022-07-22 23:24:56,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:24:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 1970 states, 1484 states have (on average 1.5269541778975741) internal successors, (2266), 1495 states have internal predecessors, (2266), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2022-07-22 23:24:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 23:24:56,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:56,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:24:56,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash 100309635, now seen corresponding path program 1 times [2022-07-22 23:24:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:56,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502018770] [2022-07-22 23:24:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:24:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:56,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502018770] [2022-07-22 23:24:56,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502018770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:56,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:56,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:56,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691707178] [2022-07-22 23:24:56,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:56,983 INFO L87 Difference]: Start difference. First operand has 1970 states, 1484 states have (on average 1.5269541778975741) internal successors, (2266), 1495 states have internal predecessors, (2266), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:59,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:02,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:03,660 INFO L93 Difference]: Finished difference Result 5910 states and 9983 transitions. [2022-07-22 23:25:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-07-22 23:25:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:03,695 INFO L225 Difference]: With dead ends: 5910 [2022-07-22 23:25:03,695 INFO L226 Difference]: Without dead ends: 3935 [2022-07-22 23:25:03,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:03,726 INFO L413 NwaCegarLoop]: 3790 mSDtfsCounter, 3075 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 938 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 9000 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:03,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 9000 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:25:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-07-22 23:25:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3899. [2022-07-22 23:25:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 2942 states have (on average 1.5159755268524813) internal successors, (4460), 2953 states have internal predecessors, (4460), 844 states have call successors, (844), 113 states have call predecessors, (844), 112 states have return successors, (835), 834 states have call predecessors, (835), 835 states have call successors, (835) [2022-07-22 23:25:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6139 transitions. [2022-07-22 23:25:03,954 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6139 transitions. Word has length 28 [2022-07-22 23:25:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:03,955 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 6139 transitions. [2022-07-22 23:25:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6139 transitions. [2022-07-22 23:25:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 23:25:03,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:03,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:03,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:25:03,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1655363240, now seen corresponding path program 1 times [2022-07-22 23:25:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:03,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105804976] [2022-07-22 23:25:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:25:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105804976] [2022-07-22 23:25:04,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105804976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:04,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734259346] [2022-07-22 23:25:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:04,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:04,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:04,389 INFO L87 Difference]: Start difference. First operand 3899 states and 6139 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:06,762 INFO L93 Difference]: Finished difference Result 11703 states and 18485 transitions. [2022-07-22 23:25:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-22 23:25:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:06,802 INFO L225 Difference]: With dead ends: 11703 [2022-07-22 23:25:06,803 INFO L226 Difference]: Without dead ends: 7807 [2022-07-22 23:25:06,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:06,824 INFO L413 NwaCegarLoop]: 3963 mSDtfsCounter, 3057 mSDsluCounter, 5295 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 9258 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:06,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 9258 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 23:25:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-07-22 23:25:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7755. [2022-07-22 23:25:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7755 states, 5855 states have (on average 1.515798462852263) internal successors, (8875), 5870 states have internal predecessors, (8875), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2022-07-22 23:25:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12216 transitions. [2022-07-22 23:25:07,108 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12216 transitions. Word has length 32 [2022-07-22 23:25:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:07,109 INFO L495 AbstractCegarLoop]: Abstraction has 7755 states and 12216 transitions. [2022-07-22 23:25:07,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12216 transitions. [2022-07-22 23:25:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 23:25:07,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:07,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:07,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:25:07,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash 441483741, now seen corresponding path program 1 times [2022-07-22 23:25:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:07,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059855434] [2022-07-22 23:25:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:07,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:25:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:07,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059855434] [2022-07-22 23:25:07,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059855434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:07,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:07,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:07,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848844626] [2022-07-22 23:25:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:07,403 INFO L87 Difference]: Start difference. First operand 7755 states and 12216 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:09,814 INFO L93 Difference]: Finished difference Result 23299 states and 36818 transitions. [2022-07-22 23:25:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-22 23:25:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:09,899 INFO L225 Difference]: With dead ends: 23299 [2022-07-22 23:25:09,899 INFO L226 Difference]: Without dead ends: 15547 [2022-07-22 23:25:09,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:09,933 INFO L413 NwaCegarLoop]: 3949 mSDtfsCounter, 3107 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 9286 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:09,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 9286 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 23:25:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15547 states. [2022-07-22 23:25:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15547 to 15463. [2022-07-22 23:25:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15463 states, 11677 states have (on average 1.515543375867089) internal successors, (17697), 11700 states have internal predecessors, (17697), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2022-07-22 23:25:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 24362 transitions. [2022-07-22 23:25:10,394 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 24362 transitions. Word has length 29 [2022-07-22 23:25:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:10,395 INFO L495 AbstractCegarLoop]: Abstraction has 15463 states and 24362 transitions. [2022-07-22 23:25:10,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 24362 transitions. [2022-07-22 23:25:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 23:25:10,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:10,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:10,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:25:10,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1843634687, now seen corresponding path program 1 times [2022-07-22 23:25:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:10,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105447721] [2022-07-22 23:25:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:25:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105447721] [2022-07-22 23:25:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105447721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:10,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:10,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540221598] [2022-07-22 23:25:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:10,746 INFO L87 Difference]: Start difference. First operand 15463 states and 24362 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:13,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:13,374 INFO L93 Difference]: Finished difference Result 46463 states and 73432 transitions. [2022-07-22 23:25:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:13,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-22 23:25:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:13,494 INFO L225 Difference]: With dead ends: 46463 [2022-07-22 23:25:13,494 INFO L226 Difference]: Without dead ends: 31003 [2022-07-22 23:25:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:13,561 INFO L413 NwaCegarLoop]: 3969 mSDtfsCounter, 3104 mSDsluCounter, 5370 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 9339 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:13,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 9339 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 23:25:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31003 states. [2022-07-22 23:25:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31003 to 30855. [2022-07-22 23:25:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30855 states, 23301 states have (on average 1.5151710227028883) internal successors, (35305), 23340 states have internal predecessors, (35305), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-07-22 23:25:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 48610 transitions. [2022-07-22 23:25:14,583 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 48610 transitions. Word has length 32 [2022-07-22 23:25:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:14,583 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 48610 transitions. [2022-07-22 23:25:14,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 48610 transitions. [2022-07-22 23:25:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:25:14,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:14,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:25:14,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash 153779286, now seen corresponding path program 1 times [2022-07-22 23:25:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:14,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796194042] [2022-07-22 23:25:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:14,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:14,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796194042] [2022-07-22 23:25:14,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796194042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:14,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:14,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64136575] [2022-07-22 23:25:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:14,812 INFO L87 Difference]: Start difference. First operand 30855 states and 48610 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:17,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:19,773 INFO L93 Difference]: Finished difference Result 92655 states and 146416 transitions. [2022-07-22 23:25:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 23:25:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:20,027 INFO L225 Difference]: With dead ends: 92655 [2022-07-22 23:25:20,028 INFO L226 Difference]: Without dead ends: 61803 [2022-07-22 23:25:20,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:20,158 INFO L413 NwaCegarLoop]: 3964 mSDtfsCounter, 3098 mSDsluCounter, 5364 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 898 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 9328 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:20,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 9328 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1111 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 23:25:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61803 states. [2022-07-22 23:25:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61803 to 61527. [2022-07-22 23:25:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61527 states, 46461 states have (on average 1.514582122640494) internal successors, (70369), 46532 states have internal predecessors, (70369), 13273 states have call successors, (13273), 1793 states have call predecessors, (13273), 1792 states have return successors, (13264), 13233 states have call predecessors, (13264), 13264 states have call successors, (13264) [2022-07-22 23:25:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61527 states to 61527 states and 96906 transitions. [2022-07-22 23:25:22,049 INFO L78 Accepts]: Start accepts. Automaton has 61527 states and 96906 transitions. Word has length 34 [2022-07-22 23:25:22,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:22,050 INFO L495 AbstractCegarLoop]: Abstraction has 61527 states and 96906 transitions. [2022-07-22 23:25:22,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61527 states and 96906 transitions. [2022-07-22 23:25:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-22 23:25:22,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:22,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:22,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:25:22,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash -17277589, now seen corresponding path program 1 times [2022-07-22 23:25:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:22,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964898084] [2022-07-22 23:25:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:22,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 23:25:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964898084] [2022-07-22 23:25:22,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964898084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:22,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:22,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123029922] [2022-07-22 23:25:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:22,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:22,561 INFO L87 Difference]: Start difference. First operand 61527 states and 96906 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:26,573 INFO L93 Difference]: Finished difference Result 184767 states and 291896 transitions. [2022-07-22 23:25:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:26,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-07-22 23:25:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:27,364 INFO L225 Difference]: With dead ends: 184767 [2022-07-22 23:25:27,364 INFO L226 Difference]: Without dead ends: 123243 [2022-07-22 23:25:27,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:27,567 INFO L413 NwaCegarLoop]: 3852 mSDtfsCounter, 3019 mSDsluCounter, 5167 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:27,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 9019 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 23:25:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123243 states. [2022-07-22 23:25:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123243 to 122711. [2022-07-22 23:25:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122711 states, 92653 states have (on average 1.5139606920445101) internal successors, (140273), 92788 states have internal predecessors, (140273), 26473 states have call successors, (26473), 3585 states have call predecessors, (26473), 3584 states have return successors, (26464), 26401 states have call predecessors, (26464), 26464 states have call successors, (26464) [2022-07-22 23:25:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 193210 transitions. [2022-07-22 23:25:31,498 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 193210 transitions. Word has length 31 [2022-07-22 23:25:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:31,498 INFO L495 AbstractCegarLoop]: Abstraction has 122711 states and 193210 transitions. [2022-07-22 23:25:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 193210 transitions. [2022-07-22 23:25:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:25:31,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:31,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:25:31,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1511922726, now seen corresponding path program 1 times [2022-07-22 23:25:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:31,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149460787] [2022-07-22 23:25:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:25:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:31,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:31,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149460787] [2022-07-22 23:25:31,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149460787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:31,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:31,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676208484] [2022-07-22 23:25:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:31,793 INFO L87 Difference]: Start difference. First operand 122711 states and 193210 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:38,541 INFO L93 Difference]: Finished difference Result 368767 states and 582440 transitions. [2022-07-22 23:25:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:25:38,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 23:25:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:39,938 INFO L225 Difference]: With dead ends: 368767 [2022-07-22 23:25:39,938 INFO L226 Difference]: Without dead ends: 246059 [2022-07-22 23:25:40,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:25:40,483 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 3058 mSDsluCounter, 5552 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 9850 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:40,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 9850 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 23:25:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246059 states. [2022-07-22 23:25:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246059 to 245015. [2022-07-22 23:25:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245015 states, 184973 states have (on average 1.5134803457801949) internal successors, (279953), 185236 states have internal predecessors, (279953), 52873 states have call successors, (52873), 7169 states have call predecessors, (52873), 7168 states have return successors, (52864), 52737 states have call predecessors, (52864), 52864 states have call successors, (52864) [2022-07-22 23:25:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245015 states to 245015 states and 385690 transitions. [2022-07-22 23:25:48,604 INFO L78 Accepts]: Start accepts. Automaton has 245015 states and 385690 transitions. Word has length 34 [2022-07-22 23:25:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 245015 states and 385690 transitions. [2022-07-22 23:25:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:25:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 245015 states and 385690 transitions. [2022-07-22 23:25:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:25:48,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:48,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:25:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:25:48,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1384382779, now seen corresponding path program 1 times [2022-07-22 23:25:48,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:48,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682179188] [2022-07-22 23:25:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:48,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:25:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:25:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:48,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682179188] [2022-07-22 23:25:48,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682179188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:48,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:48,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:25:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146776689] [2022-07-22 23:25:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:25:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:25:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:25:48,887 INFO L87 Difference]: Start difference. First operand 245015 states and 385690 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)