./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--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:36:47,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:36:47,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:36:47,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:36:47,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:36:47,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:36:47,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:36:47,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:36:47,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:36:48,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:36:48,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:36:48,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:36:48,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:36:48,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:36:48,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:36:48,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:36:48,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:36:48,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:36:48,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:36:48,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:36:48,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:36:48,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:36:48,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:36:48,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:36:48,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:36:48,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:36:48,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:36:48,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:36:48,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:36:48,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:36:48,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:36:48,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:36:48,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:36:48,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:36:48,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:36:48,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:36:48,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:36:48,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:36:48,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:36:48,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:36:48,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:36:48,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:36:48,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:36:48,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:36:48,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:36:48,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:36:48,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:36:48,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:36:48,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:36:48,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:36:48,134 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:36:48,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:36:48,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:36:48,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:36:48,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:36:48,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:36:48,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:36:48,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:36:48,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:36:48,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:36:48,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:36:48,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:36:48,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:36:48,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:36:48,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:36:48,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:36:48,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:36:48,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:36:48,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:36:48,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:36:48,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:36:48,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:36:48,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:36:48,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-11-13 18:36:48,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:36:48,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:36:48,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:36:48,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:36:48,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:36:48,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-11-13 18:36:48,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/data/f5b49276d/4bcfdd84f7c44a4d91cd47917e303f3f/FLAGd7c79d0a4 [2021-11-13 18:36:49,643 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:36:49,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-11-13 18:36:49,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/data/f5b49276d/4bcfdd84f7c44a4d91cd47917e303f3f/FLAGd7c79d0a4 [2021-11-13 18:36:50,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/data/f5b49276d/4bcfdd84f7c44a4d91cd47917e303f3f [2021-11-13 18:36:50,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:36:50,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:36:50,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:36:50,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:36:50,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:36:50,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:50" (1/1) ... [2021-11-13 18:36:50,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518d36a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:50, skipping insertion in model container [2021-11-13 18:36:50,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:50" (1/1) ... [2021-11-13 18:36:50,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:36:50,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:36:51,905 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-11-13 18:36:52,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:36:52,202 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:36:52,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-11-13 18:36:52,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:36:52,905 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:36:52,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52 WrapperNode [2021-11-13 18:36:52,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:36:52,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:36:52,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:36:52,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:36:52,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:36:53,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:36:53,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:36:53,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:36:53,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:36:53,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:36:53,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:36:53,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:36:53,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (1/1) ... [2021-11-13 18:36:53,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:36:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:53,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:36:53,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3fbae5-9da3-4acf-8b9e-b0e3204a9e67/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:36:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-13 18:36:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-13 18:36:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 18:36:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 18:36:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-11-13 18:36:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-11-13 18:36:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-11-13 18:36:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-11-13 18:36:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-13 18:36:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-13 18:36:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-11-13 18:36:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-11-13 18:36:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-11-13 18:36:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-11-13 18:36:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:36:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-11-13 18:36:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-11-13 18:36:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-13 18:36:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-13 18:36:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-13 18:36:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-13 18:36:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-13 18:36:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-13 18:36:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-11-13 18:36:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-11-13 18:36:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-11-13 18:36:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-11-13 18:36:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:36:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:36:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-11-13 18:36:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-11-13 18:36:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-11-13 18:36:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-11-13 18:36:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-11-13 18:36:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-11-13 18:36:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-13 18:36:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-13 18:36:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-11-13 18:36:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-11-13 18:36:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-11-13 18:36:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-11-13 18:36:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:36:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:36:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:36:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:36:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:36:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-11-13 18:36:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-11-13 18:36:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-11-13 18:36:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-11-13 18:36:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:36:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:36:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-11-13 18:36:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-11-13 18:36:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-11-13 18:36:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-11-13 18:36:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-11-13 18:36:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-11-13 18:36:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-11-13 18:36:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-11-13 18:36:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:36:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:36:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:36:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-13 18:36:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-13 18:36:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:36:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-11-13 18:36:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-11-13 18:36:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-13 18:36:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-13 18:36:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:36:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-11-13 18:36:53,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-11-13 18:36:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-11-13 18:36:53,742 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-11-13 18:36:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-13 18:36:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-13 18:36:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-13 18:36:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-13 18:36:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-13 18:36:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-13 18:36:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-13 18:36:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-13 18:36:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:36:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-13 18:36:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-13 18:36:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:36:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-11-13 18:36:53,746 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-11-13 18:36:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-13 18:36:53,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-13 18:36:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:36:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-13 18:36:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-13 18:36:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-11-13 18:36:53,748 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-11-13 18:36:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-11-13 18:36:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-11-13 18:36:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 18:36:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 18:36:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-11-13 18:36:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-11-13 18:36:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 18:36:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 18:36:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-11-13 18:36:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-11-13 18:36:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:36:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-13 18:36:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-13 18:36:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:36:53,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:36:53,754 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:36:53,754 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:37:10,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:37:10,382 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:37:10,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:37:10 BoogieIcfgContainer [2021-11-13 18:37:10,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:37:10,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:37:10,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:37:10,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:37:10,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:36:50" (1/3) ... [2021-11-13 18:37:10,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d30a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:37:10, skipping insertion in model container [2021-11-13 18:37:10,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:52" (2/3) ... [2021-11-13 18:37:10,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d30a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:37:10, skipping insertion in model container [2021-11-13 18:37:10,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:37:10" (3/3) ... [2021-11-13 18:37:10,405 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-11-13 18:37:10,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:37:10,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:37:10,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:37:10,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:37:10,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:37:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-13 18:37:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 18:37:10,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:10,623 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:10,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-11-13 18:37:10,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:10,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857534776] [2021-11-13 18:37:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:10,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:37:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:12,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:12,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857534776] [2021-11-13 18:37:12,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857534776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:12,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:12,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:12,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674264029] [2021-11-13 18:37:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:12,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:12,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:12,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:12,087 INFO L87 Difference]: Start difference. First operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:14,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:18,244 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-11-13 18:37:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:18,249 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-11-13 18:37:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:18,310 INFO L225 Difference]: With dead ends: 3995 [2021-11-13 18:37:18,310 INFO L226 Difference]: Without dead ends: 2701 [2021-11-13 18:37:18,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:18,345 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2186 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 657 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4674.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.81ms SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5548.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:18,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 5742 Invalid, 1306 Unknown, 0 Unchecked, 93.81ms Time], IncrementalHoareTripleChecker [657 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 5548.05ms Time] [2021-11-13 18:37:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-11-13 18:37:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-11-13 18:37:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1890 states have (on average 1.4804232804232804) internal successors, (2798), 1906 states have internal predecessors, (2798), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2021-11-13 18:37:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-11-13 18:37:18,666 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-11-13 18:37:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:18,667 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-11-13 18:37:18,667 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-11-13 18:37:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:37:18,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:18,674 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:18,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:37:18,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-11-13 18:37:18,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:18,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276105136] [2021-11-13 18:37:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:18,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:37:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:19,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:19,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276105136] [2021-11-13 18:37:19,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276105136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:19,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:19,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:19,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794753031] [2021-11-13 18:37:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:19,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:19,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:19,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:19,307 INFO L87 Difference]: Start difference. First operand 2534 states and 3875 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:21,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:24,972 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-11-13 18:37:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-11-13 18:37:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:25,034 INFO L225 Difference]: With dead ends: 7872 [2021-11-13 18:37:25,035 INFO L226 Difference]: Without dead ends: 5341 [2021-11-13 18:37:25,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:25,057 INFO L933 BasicCegarLoop]: 2400 mSDtfsCounter, 2128 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 655 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4587.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.57ms SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5216.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:25,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2291 Valid, 5794 Invalid, 1304 Unknown, 0 Unchecked, 57.57ms Time], IncrementalHoareTripleChecker [655 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 5216.59ms Time] [2021-11-13 18:37:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-11-13 18:37:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-11-13 18:37:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 3752 states have (on average 1.4797441364605544) internal successors, (5552), 3776 states have internal predecessors, (5552), 1073 states have call successors, (1073), 201 states have call predecessors, (1073), 200 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2021-11-13 18:37:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-11-13 18:37:25,420 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-11-13 18:37:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:25,420 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-11-13 18:37:25,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-11-13 18:37:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 18:37:25,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:25,428 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:25,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:37:25,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-11-13 18:37:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:25,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029203420] [2021-11-13 18:37:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:37:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:25,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:25,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029203420] [2021-11-13 18:37:26,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029203420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:26,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:26,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444130182] [2021-11-13 18:37:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:26,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:26,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:26,017 INFO L87 Difference]: Start difference. First operand 5026 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:28,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:31,325 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-11-13 18:37:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:31,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-11-13 18:37:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:31,427 INFO L225 Difference]: With dead ends: 15564 [2021-11-13 18:37:31,428 INFO L226 Difference]: Without dead ends: 10541 [2021-11-13 18:37:31,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:31,471 INFO L933 BasicCegarLoop]: 2233 mSDtfsCounter, 2213 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 693 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4260.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 5577 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.64ms SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4788.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:31,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 5577 Invalid, 1333 Unknown, 0 Unchecked, 40.64ms Time], IncrementalHoareTripleChecker [693 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 4788.93ms Time] [2021-11-13 18:37:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-11-13 18:37:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-11-13 18:37:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 7424 states have (on average 1.4800646551724137) internal successors, (10988), 7464 states have internal predecessors, (10988), 2105 states have call successors, (2105), 401 states have call predecessors, (2105), 400 states have return successors, (2096), 2080 states have call predecessors, (2096), 2096 states have call successors, (2096) [2021-11-13 18:37:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-11-13 18:37:32,262 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-11-13 18:37:32,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:32,263 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-11-13 18:37:32,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-11-13 18:37:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:37:32,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:32,268 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:32,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:37:32,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-11-13 18:37:32,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:32,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701003470] [2021-11-13 18:37:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:32,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:37:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:32,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:32,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701003470] [2021-11-13 18:37:32,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701003470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:32,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:32,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:32,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14100298] [2021-11-13 18:37:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:32,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:32,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:32,773 INFO L87 Difference]: Start difference. First operand 9930 states and 15189 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:34,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:38,807 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-11-13 18:37:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-11-13 18:37:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:38,966 INFO L225 Difference]: With dead ends: 30888 [2021-11-13 18:37:38,966 INFO L226 Difference]: Without dead ends: 20961 [2021-11-13 18:37:39,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:39,034 INFO L933 BasicCegarLoop]: 2468 mSDtfsCounter, 2169 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 632 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4777.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 5962 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.33ms SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5243.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:39,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 5962 Invalid, 1284 Unknown, 0 Unchecked, 37.33ms Time], IncrementalHoareTripleChecker [632 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 5243.49ms Time] [2021-11-13 18:37:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-11-13 18:37:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-11-13 18:37:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19758 states, 14772 states have (on average 1.479014351475765) internal successors, (21848), 14844 states have internal predecessors, (21848), 4185 states have call successors, (4185), 801 states have call predecessors, (4185), 800 states have return successors, (4176), 4144 states have call predecessors, (4176), 4176 states have call successors, (4176) [2021-11-13 18:37:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-11-13 18:37:40,178 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-11-13 18:37:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-11-13 18:37:40,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-11-13 18:37:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:37:40,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:40,182 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:40,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:37:40,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-11-13 18:37:40,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:40,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678291988] [2021-11-13 18:37:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:40,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:37:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:40,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:40,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678291988] [2021-11-13 18:37:40,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678291988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:40,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:40,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:40,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745341425] [2021-11-13 18:37:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:40,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:40,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:40,548 INFO L87 Difference]: Start difference. First operand 19758 states and 30209 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:42,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:47,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:48,494 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-11-13 18:37:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-11-13 18:37:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:48,824 INFO L225 Difference]: With dead ends: 61204 [2021-11-13 18:37:48,824 INFO L226 Difference]: Without dead ends: 41449 [2021-11-13 18:37:48,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:48,923 INFO L933 BasicCegarLoop]: 2578 mSDtfsCounter, 2090 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 609 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6115.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 6101 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.79ms SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6745.02ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:48,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 6101 Invalid, 1255 Unknown, 0 Unchecked, 31.79ms Time], IncrementalHoareTripleChecker [609 Valid, 644 Invalid, 2 Unknown, 0 Unchecked, 6745.02ms Time] [2021-11-13 18:37:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-11-13 18:37:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-11-13 18:37:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39062 states, 29244 states have (on average 1.4799617015456161) internal successors, (43280), 29380 states have internal predecessors, (43280), 8217 states have call successors, (8217), 1601 states have call predecessors, (8217), 1600 states have return successors, (8208), 8144 states have call predecessors, (8208), 8208 states have call successors, (8208) [2021-11-13 18:37:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-11-13 18:37:51,074 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-11-13 18:37:51,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:51,075 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-11-13 18:37:51,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-11-13 18:37:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 18:37:51,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:51,077 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:37:51,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:37:51,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-11-13 18:37:51,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:51,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935233878] [2021-11-13 18:37:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:51,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:37:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:37:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:51,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:51,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935233878] [2021-11-13 18:37:51,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935233878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:51,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:51,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:51,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625706726] [2021-11-13 18:37:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:51,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:51,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:51,398 INFO L87 Difference]: Start difference. First operand 39062 states and 59705 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:37:53,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:58,285 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-11-13 18:37:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:58,286 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-11-13 18:37:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:58,926 INFO L225 Difference]: With dead ends: 121724 [2021-11-13 18:37:58,926 INFO L226 Difference]: Without dead ends: 82665 [2021-11-13 18:37:59,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:59,103 INFO L933 BasicCegarLoop]: 2499 mSDtfsCounter, 2149 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 641 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4012.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5913 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.60ms SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4534.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:59,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5913 Invalid, 1294 Unknown, 0 Unchecked, 27.60ms Time], IncrementalHoareTripleChecker [641 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 4534.22ms Time] [2021-11-13 18:37:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-11-13 18:38:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-11-13 18:38:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 58316 states have (on average 1.4791137938130188) internal successors, (86256), 58580 states have internal predecessors, (86256), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2021-11-13 18:38:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-11-13 18:38:03,542 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-11-13 18:38:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:03,545 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-11-13 18:38:03,545 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:38:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-11-13 18:38:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 18:38:03,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:03,553 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:38:03,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:38:03,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:38:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-11-13 18:38:03,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:38:03,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756015776] [2021-11-13 18:38:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:03,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:38:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 18:38:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:38:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:38:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:38:03,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:38:03,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756015776] [2021-11-13 18:38:03,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756015776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:03,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:03,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:38:03,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212981043] [2021-11-13 18:38:03,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:03,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:38:03,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:38:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:38:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:38:03,931 INFO L87 Difference]: Start difference. First operand 77910 states and 119033 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:38:06,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:12,464 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-11-13 18:38:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:38:12,464 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-11-13 18:38:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:13,680 INFO L225 Difference]: With dead ends: 242556 [2021-11-13 18:38:13,680 INFO L226 Difference]: Without dead ends: 164649 [2021-11-13 18:38:13,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:38:13,993 INFO L933 BasicCegarLoop]: 2445 mSDtfsCounter, 2179 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 658 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4003.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.55ms SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4525.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:13,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 5889 Invalid, 1310 Unknown, 0 Unchecked, 23.55ms Time], IncrementalHoareTripleChecker [658 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 4525.43ms Time] [2021-11-13 18:38:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-11-13 18:38:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-11-13 18:38:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155158 states, 116108 states have (on average 1.4779343369965894) internal successors, (171600), 116628 states have internal predecessors, (171600), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2021-11-13 18:38:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-11-13 18:38:21,133 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-11-13 18:38:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:21,133 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-11-13 18:38:21,134 INFO L471 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:38:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-11-13 18:38:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 18:38:21,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:21,136 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:38:21,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:38:21,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:38:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-11-13 18:38:21,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:38:21,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287447162] [2021-11-13 18:38:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:21,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:38:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:38:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:38:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:38:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:38:21,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:38:21,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287447162] [2021-11-13 18:38:21,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287447162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:21,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:38:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574889915] [2021-11-13 18:38:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:38:21,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:38:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:38:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:38:21,450 INFO L87 Difference]: Start difference. First operand 155158 states and 236889 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:38:23,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:34,328 INFO L93 Difference]: Finished difference Result 483132 states and 749189 transitions. [2021-11-13 18:38:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:38:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-11-13 18:38:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:36,490 INFO L225 Difference]: With dead ends: 483132 [2021-11-13 18:38:36,490 INFO L226 Difference]: Without dead ends: 327977 [2021-11-13 18:38:37,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:38:37,087 INFO L933 BasicCegarLoop]: 2802 mSDtfsCounter, 2105 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 584 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3652.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.70ms SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4188.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:37,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 6422 Invalid, 1248 Unknown, 0 Unchecked, 20.70ms Time], IncrementalHoareTripleChecker [584 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4188.74ms Time] [2021-11-13 18:38:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327977 states.