./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 eb692b52 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-?-eb692b5 [2022-07-19 23:10:47,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:10:47,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:10:47,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:10:47,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:10:47,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:10:47,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:10:47,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:10:47,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:10:47,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:10:47,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:10:47,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:10:47,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:10:47,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:10:47,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:10:47,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:10:47,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:10:47,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:10:47,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:10:47,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:10:47,567 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:10:47,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:10:47,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:10:47,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:10:47,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:10:47,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:10:47,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:10:47,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:10:47,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:10:47,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:10:47,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:10:47,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:10:47,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:10:47,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:10:47,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:10:47,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:10:47,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:10:47,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:10:47,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:10:47,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:10:47,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:10:47,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:10:47,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:10:47,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:10:47,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:10:47,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:10:47,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:10:47,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:10:47,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:10:47,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:10:47,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:10:47,615 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:10:47,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:10:47,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:10:47,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:10:47,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:10:47,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:10:47,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:10:47,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:10:47,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:10:47,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:10:47,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:10:47,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:10:47,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:10:47,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:10:47,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:10:47,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:10:47,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:10:47,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:10:47,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:10:47,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:10:47,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:10:47,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:10:47,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-07-19 23:10:47,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:10:47,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:10:47,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:10:47,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:10:47,892 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:10:47,893 INFO L432 ainManager$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 [2022-07-19 23:10:47,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4878e5ef0/2f4f2937e2b045e29937d597524592cb/FLAG421ad5cbd [2022-07-19 23:10:48,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:10:48,642 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 [2022-07-19 23:10:48,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4878e5ef0/2f4f2937e2b045e29937d597524592cb/FLAG421ad5cbd [2022-07-19 23:10:48,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4878e5ef0/2f4f2937e2b045e29937d597524592cb [2022-07-19 23:10:48,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:10:48,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:10:48,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:10:48,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:10:48,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:10:48,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:10:48" (1/1) ... [2022-07-19 23:10:48,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c7547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:48, skipping insertion in model container [2022-07-19 23:10:48,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:10:48" (1/1) ... [2022-07-19 23:10:48,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:10:48,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:10:49,949 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] [2022-07-19 23:10:50,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:10:50,122 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:10:50,377 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] [2022-07-19 23:10:50,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:10:50,608 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:10:50,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50 WrapperNode [2022-07-19 23:10:50,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:10:50,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:10:50,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:10:50,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:10:50,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:50,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:50,990 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7953 [2022-07-19 23:10:50,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:10:50,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:10:50,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:10:50,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:10:51,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:10:51,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:10:51,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:10:51,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:10:51,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (1/1) ... [2022-07-19 23:10:51,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:10:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:10:51,441 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) [2022-07-19 23:10:51,471 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 [2022-07-19 23:10:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-07-19 23:10:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-07-19 23:10:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-07-19 23:10:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-07-19 23:10:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-07-19 23:10:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-07-19 23:10:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-07-19 23:10:51,485 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-07-19 23:10:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-07-19 23:10:51,485 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-07-19 23:10:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:10:51,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:10:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-07-19 23:10:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-07-19 23:10:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-07-19 23:10:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-07-19 23:10:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-07-19 23:10:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-07-19 23:10:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-07-19 23:10:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-07-19 23:10:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:10:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:10:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:10:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:10:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-19 23:10:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-19 23:10:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-07-19 23:10:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-07-19 23:10:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:10:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:10:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-07-19 23:10:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-07-19 23:10:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:10:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-07-19 23:10:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-07-19 23:10:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-07-19 23:10:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-07-19 23:10:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-19 23:10:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-19 23:10:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-19 23:10:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-19 23:10:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-07-19 23:10:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-07-19 23:10:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-07-19 23:10:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-07-19 23:10:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:10:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-07-19 23:10:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-07-19 23:10:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-19 23:10:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-19 23:10:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:10:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:10:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-19 23:10:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-19 23:10:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-19 23:10:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-19 23:10:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-07-19 23:10:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-07-19 23:10:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-07-19 23:10:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-07-19 23:10:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-19 23:10:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-19 23:10:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-07-19 23:10:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-07-19 23:10:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-07-19 23:10:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-07-19 23:10:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-07-19 23:10:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-07-19 23:10:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-07-19 23:10:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-07-19 23:10:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-19 23:10:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-19 23:10:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-07-19 23:10:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-07-19 23:10:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-07-19 23:10:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-07-19 23:10:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-19 23:10:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-19 23:10:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-19 23:10:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-07-19 23:10:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:10:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-19 23:10:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-19 23:10:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-19 23:10:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-19 23:10:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-07-19 23:10:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-07-19 23:10:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-07-19 23:10:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-07-19 23:10:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-07-19 23:10:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-07-19 23:10:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:10:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-19 23:10:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-07-19 23:10:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-07-19 23:10:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-07-19 23:10:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:10:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:10:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-19 23:10:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-07-19 23:10:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-07-19 23:10:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-07-19 23:10:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-07-19 23:10:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-07-19 23:10:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:10:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-07-19 23:10:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-07-19 23:10:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:10:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-07-19 23:10:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-07-19 23:10:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:10:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-19 23:10:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-07-19 23:10:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-07-19 23:10:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-07-19 23:10:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-07-19 23:10:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-07-19 23:10:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-07-19 23:10:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-07-19 23:10:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:10:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-19 23:10:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-19 23:10:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:10:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:10:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:10:51,510 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:10:52,254 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:10:52,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:10:58,064 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:10:58,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:10:58,089 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:10:58,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:10:58 BoogieIcfgContainer [2022-07-19 23:10:58,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:10:58,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:10:58,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:10:58,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:10:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:10:48" (1/3) ... [2022-07-19 23:10:58,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a323b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:10:58, skipping insertion in model container [2022-07-19 23:10:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:10:50" (2/3) ... [2022-07-19 23:10:58,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a323b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:10:58, skipping insertion in model container [2022-07-19 23:10:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:10:58" (3/3) ... [2022-07-19 23:10:58,103 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-07-19 23:10:58,116 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:10:58,116 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:10:58,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:10:58,224 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@43089086, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d7ba54b [2022-07-19 23:10:58,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:10:58,234 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) [2022-07-19 23:10:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 23:10:58,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:58,257 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] [2022-07-19 23:10:58,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash 100309635, now seen corresponding path program 1 times [2022-07-19 23:10:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224836924] [2022-07-19 23:10:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:58,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:10:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:10:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:10:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:59,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224836924] [2022-07-19 23:10:59,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224836924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:59,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:59,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318821061] [2022-07-19 23:10:59,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:59,225 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) [2022-07-19 23:11:01,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:04,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:06,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:08,389 INFO L93 Difference]: Finished difference Result 5910 states and 9983 transitions. [2022-07-19 23:11:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:08,393 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 [2022-07-19 23:11:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:08,450 INFO L225 Difference]: With dead ends: 5910 [2022-07-19 23:11:08,451 INFO L226 Difference]: Without dead ends: 3935 [2022-07-19 23:11:08,489 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 [2022-07-19 23:11:08,492 INFO L413 NwaCegarLoop]: 3790 mSDtfsCounter, 3075 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 938 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 9000 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 9000 Invalid, 2035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 1094 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2022-07-19 23:11:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-07-19 23:11:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3899. [2022-07-19 23:11:08,693 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) [2022-07-19 23:11:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6139 transitions. [2022-07-19 23:11:08,722 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6139 transitions. Word has length 28 [2022-07-19 23:11:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:08,723 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 6139 transitions. [2022-07-19 23:11:08,723 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) [2022-07-19 23:11:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6139 transitions. [2022-07-19 23:11:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 23:11:08,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:08,726 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] [2022-07-19 23:11:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:11:08,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1655363240, now seen corresponding path program 1 times [2022-07-19 23:11:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:08,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952311364] [2022-07-19 23:11:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:08,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:11:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:09,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:09,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952311364] [2022-07-19 23:11:09,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952311364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:09,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:09,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:09,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886143003] [2022-07-19 23:11:09,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:09,205 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) [2022-07-19 23:11:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:11,896 INFO L93 Difference]: Finished difference Result 11703 states and 18485 transitions. [2022-07-19 23:11:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:11,897 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 [2022-07-19 23:11:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:11,944 INFO L225 Difference]: With dead ends: 11703 [2022-07-19 23:11:11,944 INFO L226 Difference]: Without dead ends: 7807 [2022-07-19 23:11:11,968 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 [2022-07-19 23:11:11,969 INFO L413 NwaCegarLoop]: 3964 mSDtfsCounter, 3057 mSDsluCounter, 5297 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 9261 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:11,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 9261 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 23:11:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-07-19 23:11:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7755. [2022-07-19 23:11:12,344 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) [2022-07-19 23:11:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12216 transitions. [2022-07-19 23:11:12,386 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12216 transitions. Word has length 32 [2022-07-19 23:11:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:12,387 INFO L495 AbstractCegarLoop]: Abstraction has 7755 states and 12216 transitions. [2022-07-19 23:11:12,387 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) [2022-07-19 23:11:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12216 transitions. [2022-07-19 23:11:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 23:11:12,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:12,393 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] [2022-07-19 23:11:12,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:11:12,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash 441483741, now seen corresponding path program 1 times [2022-07-19 23:11:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534335928] [2022-07-19 23:11:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:11:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:12,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534335928] [2022-07-19 23:11:12,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534335928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:12,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:12,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:12,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287351649] [2022-07-19 23:11:12,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:12,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:12,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:12,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:12,823 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) [2022-07-19 23:11:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:15,470 INFO L93 Difference]: Finished difference Result 23299 states and 36818 transitions. [2022-07-19 23:11:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:15,470 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 [2022-07-19 23:11:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:15,661 INFO L225 Difference]: With dead ends: 23299 [2022-07-19 23:11:15,661 INFO L226 Difference]: Without dead ends: 15547 [2022-07-19 23:11:15,695 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 [2022-07-19 23:11:15,696 INFO L413 NwaCegarLoop]: 3959 mSDtfsCounter, 3107 mSDsluCounter, 5360 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 9319 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:15,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3356 Valid, 9319 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:11:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15547 states. [2022-07-19 23:11:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15547 to 15463. [2022-07-19 23:11:16,233 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) [2022-07-19 23:11:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15463 states to 15463 states and 24362 transitions. [2022-07-19 23:11:16,307 INFO L78 Accepts]: Start accepts. Automaton has 15463 states and 24362 transitions. Word has length 29 [2022-07-19 23:11:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:16,308 INFO L495 AbstractCegarLoop]: Abstraction has 15463 states and 24362 transitions. [2022-07-19 23:11:16,309 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) [2022-07-19 23:11:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 15463 states and 24362 transitions. [2022-07-19 23:11:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 23:11:16,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:16,311 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] [2022-07-19 23:11:16,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:11:16,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1843634687, now seen corresponding path program 1 times [2022-07-19 23:11:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:16,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599093261] [2022-07-19 23:11:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:11:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599093261] [2022-07-19 23:11:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599093261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:16,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:16,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020374294] [2022-07-19 23:11:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:16,658 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) [2022-07-19 23:11:20,600 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 [] [2022-07-19 23:11:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:21,530 INFO L93 Difference]: Finished difference Result 46463 states and 73432 transitions. [2022-07-19 23:11:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:21,531 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 [2022-07-19 23:11:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:21,695 INFO L225 Difference]: With dead ends: 46463 [2022-07-19 23:11:21,695 INFO L226 Difference]: Without dead ends: 31003 [2022-07-19 23:11:21,784 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 [2022-07-19 23:11:21,790 INFO L413 NwaCegarLoop]: 3957 mSDtfsCounter, 3104 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 899 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 9301 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:21,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 9301 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1109 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 23:11:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31003 states. [2022-07-19 23:11:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31003 to 30855. [2022-07-19 23:11:22,956 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) [2022-07-19 23:11:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 48610 transitions. [2022-07-19 23:11:23,125 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 48610 transitions. Word has length 32 [2022-07-19 23:11:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:23,126 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 48610 transitions. [2022-07-19 23:11:23,126 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) [2022-07-19 23:11:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 48610 transitions. [2022-07-19 23:11:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 23:11:23,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:23,129 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] [2022-07-19 23:11:23,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:11:23,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 153779286, now seen corresponding path program 1 times [2022-07-19 23:11:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:23,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084015395] [2022-07-19 23:11:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:11:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:23,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:23,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084015395] [2022-07-19 23:11:23,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084015395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:23,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:23,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446294065] [2022-07-19 23:11:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:23,470 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) [2022-07-19 23:11:26,165 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 [] [2022-07-19 23:11:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:28,991 INFO L93 Difference]: Finished difference Result 92655 states and 146416 transitions. [2022-07-19 23:11:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:28,992 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 [2022-07-19 23:11:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:29,427 INFO L225 Difference]: With dead ends: 92655 [2022-07-19 23:11:29,428 INFO L226 Difference]: Without dead ends: 61803 [2022-07-19 23:11:29,592 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 [2022-07-19 23:11:29,593 INFO L413 NwaCegarLoop]: 3979 mSDtfsCounter, 3096 mSDsluCounter, 5377 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 897 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 9356 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:29,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 9356 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 1112 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-07-19 23:11:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61803 states. [2022-07-19 23:11:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61803 to 61527. [2022-07-19 23:11:31,781 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) [2022-07-19 23:11:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61527 states to 61527 states and 96906 transitions. [2022-07-19 23:11:32,210 INFO L78 Accepts]: Start accepts. Automaton has 61527 states and 96906 transitions. Word has length 34 [2022-07-19 23:11:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:32,211 INFO L495 AbstractCegarLoop]: Abstraction has 61527 states and 96906 transitions. [2022-07-19 23:11:32,211 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) [2022-07-19 23:11:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 61527 states and 96906 transitions. [2022-07-19 23:11:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 23:11:32,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:32,213 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] [2022-07-19 23:11:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:11:32,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -17277589, now seen corresponding path program 1 times [2022-07-19 23:11:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:32,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893726394] [2022-07-19 23:11:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:32,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:11:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:32,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893726394] [2022-07-19 23:11:32,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893726394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:32,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:32,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:32,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504250529] [2022-07-19 23:11:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:32,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:32,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:32,780 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) [2022-07-19 23:11:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:37,309 INFO L93 Difference]: Finished difference Result 184767 states and 291896 transitions. [2022-07-19 23:11:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:37,311 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 [2022-07-19 23:11:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:38,365 INFO L225 Difference]: With dead ends: 184767 [2022-07-19 23:11:38,366 INFO L226 Difference]: Without dead ends: 123243 [2022-07-19 23:11:38,682 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 [2022-07-19 23:11:38,683 INFO L413 NwaCegarLoop]: 3851 mSDtfsCounter, 3021 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 9033 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:38,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 9033 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 23:11:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123243 states. [2022-07-19 23:11:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123243 to 122711. [2022-07-19 23:11:41,689 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) [2022-07-19 23:11:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122711 states to 122711 states and 193210 transitions. [2022-07-19 23:11:42,618 INFO L78 Accepts]: Start accepts. Automaton has 122711 states and 193210 transitions. Word has length 31 [2022-07-19 23:11:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:42,619 INFO L495 AbstractCegarLoop]: Abstraction has 122711 states and 193210 transitions. [2022-07-19 23:11:42,619 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) [2022-07-19 23:11:42,619 INFO L276 IsEmpty]: Start isEmpty. Operand 122711 states and 193210 transitions. [2022-07-19 23:11:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 23:11:42,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:42,621 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] [2022-07-19 23:11:42,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:11:42,621 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1511922726, now seen corresponding path program 1 times [2022-07-19 23:11:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:42,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376812640] [2022-07-19 23:11:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:11:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:11:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376812640] [2022-07-19 23:11:42,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376812640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:42,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:42,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:11:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658737905] [2022-07-19 23:11:42,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:42,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:11:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:11:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:11:42,923 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) [2022-07-19 23:11:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:49,702 INFO L93 Difference]: Finished difference Result 368767 states and 582440 transitions. [2022-07-19 23:11:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:11:49,702 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 [2022-07-19 23:11:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:51,389 INFO L225 Difference]: With dead ends: 368767 [2022-07-19 23:11:51,390 INFO L226 Difference]: Without dead ends: 246059 [2022-07-19 23:11:51,929 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 [2022-07-19 23:11:51,931 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 3058 mSDsluCounter, 5577 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 9887 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:51,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 9887 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 23:11:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246059 states. [2022-07-19 23:11:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246059 to 245015. [2022-07-19 23:11:58,920 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) [2022-07-19 23:12:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245015 states to 245015 states and 385690 transitions. [2022-07-19 23:12:00,210 INFO L78 Accepts]: Start accepts. Automaton has 245015 states and 385690 transitions. Word has length 34 [2022-07-19 23:12:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:12:00,210 INFO L495 AbstractCegarLoop]: Abstraction has 245015 states and 385690 transitions. [2022-07-19 23:12:00,211 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) [2022-07-19 23:12:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 245015 states and 385690 transitions. [2022-07-19 23:12:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 23:12:00,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:12:00,212 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] [2022-07-19 23:12:00,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:12:00,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:12:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:12:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1384382779, now seen corresponding path program 1 times [2022-07-19 23:12:00,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:12:00,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368631737] [2022-07-19 23:12:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:12:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:12:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:12:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:12:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:12:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:12:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:12:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:12:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:12:01,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368631737] [2022-07-19 23:12:01,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368631737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:12:01,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:12:01,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:12:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788677850] [2022-07-19 23:12:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:12:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:12:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:12:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:12:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:12:01,046 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)