./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa --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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:39:39,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:39:39,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:39:39,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:39:39,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:39:39,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:39:39,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:39:39,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:39:39,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:39:39,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:39:39,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:39:39,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:39:39,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:39:39,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:39:39,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:39:39,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:39:39,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:39:39,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:39:39,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:39:39,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:39:39,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:39:39,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:39:39,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:39:39,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:39:39,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:39:39,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:39:39,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:39:39,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:39:39,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:39:39,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:39:39,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:39:39,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:39:39,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:39:39,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:39:39,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:39:39,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:39:39,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:39:39,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:39:39,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:39:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:39:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:39:39,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 00:39:39,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:39:39,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:39:39,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:39:39,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:39:39,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:39:39,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:39:39,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:39:39,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:39:39,711 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:39:39,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:39:39,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:39:39,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:39:39,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:39:39,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:39:39,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:39:39,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:39:39,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:39:39,714 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_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2021-12-07 00:39:39,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:39:39,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:39:39,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:39:39,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:39:39,900 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:39:39,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2021-12-07 00:39:39,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/data/471fc319f/da0f96cba7af4fa2aa834da839e69b9d/FLAG9dd076360 [2021-12-07 00:39:40,569 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:39:40,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2021-12-07 00:39:40,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/data/471fc319f/da0f96cba7af4fa2aa834da839e69b9d/FLAG9dd076360 [2021-12-07 00:39:40,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/data/471fc319f/da0f96cba7af4fa2aa834da839e69b9d [2021-12-07 00:39:41,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:39:41,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:39:41,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:39:41,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:39:41,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:39:41,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:41,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0737aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41, skipping insertion in model container [2021-12-07 00:39:41,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:41,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:39:41,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:39:41,644 WARN L230 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_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2021-12-07 00:39:41,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:39:41,728 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:39:41,885 WARN L230 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_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2021-12-07 00:39:41,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:39:41,964 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:39:41,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41 WrapperNode [2021-12-07 00:39:41,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:39:41,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:39:41,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:39:41,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:39:41,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,132 INFO L137 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3523 [2021-12-07 00:39:42,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:39:42,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:39:42,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:39:42,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:39:42,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:39:42,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:39:42,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:39:42,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:39:42,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (1/1) ... [2021-12-07 00:39:42,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:39:42,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:42,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:39:42,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ff8bc7-48c8-4ec9-9045-2eb27b0a55cc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2021-12-07 00:39:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2021-12-07 00:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-07 00:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-07 00:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-07 00:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2021-12-07 00:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-07 00:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2021-12-07 00:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2021-12-07 00:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2021-12-07 00:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2021-12-07 00:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-07 00:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-07 00:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2021-12-07 00:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-07 00:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2021-12-07 00:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2021-12-07 00:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2021-12-07 00:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2021-12-07 00:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-07 00:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-07 00:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2021-12-07 00:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2021-12-07 00:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2021-12-07 00:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2021-12-07 00:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-07 00:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-07 00:39:42,624 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:39:42,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:39:44,577 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:39:44,592 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:39:44,592 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 00:39:44,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:39:44 BoogieIcfgContainer [2021-12-07 00:39:44,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:39:44,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:39:44,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:39:44,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:39:44,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:39:41" (1/3) ... [2021-12-07 00:39:44,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c08f592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:39:44, skipping insertion in model container [2021-12-07 00:39:44,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:39:41" (2/3) ... [2021-12-07 00:39:44,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c08f592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:39:44, skipping insertion in model container [2021-12-07 00:39:44,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:39:44" (3/3) ... [2021-12-07 00:39:44,600 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2021-12-07 00:39:44,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:39:44,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:39:44,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:39:44,650 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:39:44,650 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:39:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 816 states, 619 states have (on average 1.505654281098546) internal successors, (932), 626 states have internal predecessors, (932), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2021-12-07 00:39:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 00:39:44,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:44,690 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] [2021-12-07 00:39:44,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash 562547104, now seen corresponding path program 1 times [2021-12-07 00:39:44,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:44,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520632680] [2021-12-07 00:39:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:44,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:39:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:45,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:45,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520632680] [2021-12-07 00:39:45,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520632680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:45,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:45,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:45,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198115234] [2021-12-07 00:39:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:45,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:45,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:45,115 INFO L87 Difference]: Start difference. First operand has 816 states, 619 states have (on average 1.505654281098546) internal successors, (932), 626 states have internal predecessors, (932), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:46,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:46,213 INFO L93 Difference]: Finished difference Result 2562 states and 4203 transitions. [2021-12-07 00:39:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-12-07 00:39:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:46,239 INFO L225 Difference]: With dead ends: 2562 [2021-12-07 00:39:46,239 INFO L226 Difference]: Without dead ends: 1741 [2021-12-07 00:39:46,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:46,253 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1343 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:46,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 3787 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:39:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-12-07 00:39:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1594. [2021-12-07 00:39:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1212 states have (on average 1.504950495049505) internal successors, (1824), 1217 states have internal predecessors, (1824), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2021-12-07 00:39:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2484 transitions. [2021-12-07 00:39:46,384 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2484 transitions. Word has length 29 [2021-12-07 00:39:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:46,384 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 2484 transitions. [2021-12-07 00:39:46,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2484 transitions. [2021-12-07 00:39:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 00:39:46,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:46,387 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] [2021-12-07 00:39:46,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:39:46,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1256835525, now seen corresponding path program 1 times [2021-12-07 00:39:46,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:46,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605120879] [2021-12-07 00:39:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:46,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:39:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:46,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:46,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605120879] [2021-12-07 00:39:46,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605120879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:46,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:46,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:46,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176112685] [2021-12-07 00:39:46,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:46,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:46,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:46,575 INFO L87 Difference]: Start difference. First operand 1594 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:47,627 INFO L93 Difference]: Finished difference Result 5026 states and 7920 transitions. [2021-12-07 00:39:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-07 00:39:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:47,651 INFO L225 Difference]: With dead ends: 5026 [2021-12-07 00:39:47,651 INFO L226 Difference]: Without dead ends: 3435 [2021-12-07 00:39:47,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:47,659 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 1340 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:47,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 3800 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:39:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-12-07 00:39:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3156. [2021-12-07 00:39:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3156 states, 2401 states have (on average 1.5052061640982923) internal successors, (3614), 2406 states have internal predecessors, (3614), 658 states have call successors, (658), 97 states have call predecessors, (658), 96 states have return successors, (652), 652 states have call predecessors, (652), 652 states have call successors, (652) [2021-12-07 00:39:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 4924 transitions. [2021-12-07 00:39:47,779 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 4924 transitions. Word has length 30 [2021-12-07 00:39:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:47,779 INFO L470 AbstractCegarLoop]: Abstraction has 3156 states and 4924 transitions. [2021-12-07 00:39:47,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 4924 transitions. [2021-12-07 00:39:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:39:47,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:47,781 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] [2021-12-07 00:39:47,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:39:47,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1258897429, now seen corresponding path program 1 times [2021-12-07 00:39:47,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:47,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153633766] [2021-12-07 00:39:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:47,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:39:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:47,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153633766] [2021-12-07 00:39:47,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153633766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:47,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:47,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:47,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250101057] [2021-12-07 00:39:47,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:47,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:47,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:47,923 INFO L87 Difference]: Start difference. First operand 3156 states and 4924 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:49,021 INFO L93 Difference]: Finished difference Result 9966 states and 15718 transitions. [2021-12-07 00:39:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:49,021 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-07 00:39:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:49,064 INFO L225 Difference]: With dead ends: 9966 [2021-12-07 00:39:49,064 INFO L226 Difference]: Without dead ends: 6813 [2021-12-07 00:39:49,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:49,080 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 1340 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:49,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 3822 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:39:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2021-12-07 00:39:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 6270. [2021-12-07 00:39:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6270 states, 4771 states have (on average 1.5045063927897715) internal successors, (7178), 4776 states have internal predecessors, (7178), 1306 states have call successors, (1306), 193 states have call predecessors, (1306), 192 states have return successors, (1300), 1300 states have call predecessors, (1300), 1300 states have call successors, (1300) [2021-12-07 00:39:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6270 states to 6270 states and 9784 transitions. [2021-12-07 00:39:49,335 INFO L78 Accepts]: Start accepts. Automaton has 6270 states and 9784 transitions. Word has length 33 [2021-12-07 00:39:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:49,335 INFO L470 AbstractCegarLoop]: Abstraction has 6270 states and 9784 transitions. [2021-12-07 00:39:49,335 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6270 states and 9784 transitions. [2021-12-07 00:39:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 00:39:49,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:49,337 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] [2021-12-07 00:39:49,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:39:49,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1575112406, now seen corresponding path program 1 times [2021-12-07 00:39:49,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:49,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571623354] [2021-12-07 00:39:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:49,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 00:39:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:49,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:49,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571623354] [2021-12-07 00:39:49,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571623354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:49,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:49,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:49,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129899018] [2021-12-07 00:39:49,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:49,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:49,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:49,498 INFO L87 Difference]: Start difference. First operand 6270 states and 9784 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:50,606 INFO L93 Difference]: Finished difference Result 19812 states and 31242 transitions. [2021-12-07 00:39:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:50,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-07 00:39:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:50,694 INFO L225 Difference]: With dead ends: 19812 [2021-12-07 00:39:50,694 INFO L226 Difference]: Without dead ends: 13545 [2021-12-07 00:39:50,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:50,719 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 1343 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:50,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 3907 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:39:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2021-12-07 00:39:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 12474. [2021-12-07 00:39:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12474 states, 9491 states have (on average 1.5035296596775893) internal successors, (14270), 9496 states have internal predecessors, (14270), 2598 states have call successors, (2598), 385 states have call predecessors, (2598), 384 states have return successors, (2592), 2592 states have call predecessors, (2592), 2592 states have call successors, (2592) [2021-12-07 00:39:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12474 states to 12474 states and 19460 transitions. [2021-12-07 00:39:51,263 INFO L78 Accepts]: Start accepts. Automaton has 12474 states and 19460 transitions. Word has length 30 [2021-12-07 00:39:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:51,263 INFO L470 AbstractCegarLoop]: Abstraction has 12474 states and 19460 transitions. [2021-12-07 00:39:51,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 12474 states and 19460 transitions. [2021-12-07 00:39:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-07 00:39:51,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:51,265 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] [2021-12-07 00:39:51,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:39:51,266 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 701010116, now seen corresponding path program 1 times [2021-12-07 00:39:51,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:51,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299158911] [2021-12-07 00:39:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:51,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:39:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:51,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:51,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299158911] [2021-12-07 00:39:51,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299158911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:51,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:51,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:51,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487421964] [2021-12-07 00:39:51,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:51,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:51,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:51,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:51,417 INFO L87 Difference]: Start difference. First operand 12474 states and 19460 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:52,714 INFO L93 Difference]: Finished difference Result 39368 states and 62038 transitions. [2021-12-07 00:39:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:52,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-12-07 00:39:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:52,808 INFO L225 Difference]: With dead ends: 39368 [2021-12-07 00:39:52,808 INFO L226 Difference]: Without dead ends: 26897 [2021-12-07 00:39:52,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:52,849 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1328 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:52,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 3921 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:39:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26897 states. [2021-12-07 00:39:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26897 to 24770. [2021-12-07 00:39:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24770 states, 18843 states have (on average 1.5019901289603566) internal successors, (28302), 18848 states have internal predecessors, (28302), 5158 states have call successors, (5158), 769 states have call predecessors, (5158), 768 states have return successors, (5152), 5152 states have call predecessors, (5152), 5152 states have call successors, (5152) [2021-12-07 00:39:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24770 states to 24770 states and 38612 transitions. [2021-12-07 00:39:53,797 INFO L78 Accepts]: Start accepts. Automaton has 24770 states and 38612 transitions. Word has length 39 [2021-12-07 00:39:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:53,797 INFO L470 AbstractCegarLoop]: Abstraction has 24770 states and 38612 transitions. [2021-12-07 00:39:53,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 24770 states and 38612 transitions. [2021-12-07 00:39:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:39:53,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:53,799 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] [2021-12-07 00:39:53,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:39:53,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash -176446361, now seen corresponding path program 1 times [2021-12-07 00:39:53,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:53,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159384545] [2021-12-07 00:39:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:53,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:39:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:53,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159384545] [2021-12-07 00:39:53,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159384545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:53,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:53,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:53,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262007392] [2021-12-07 00:39:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:53,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:53,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:53,933 INFO L87 Difference]: Start difference. First operand 24770 states and 38612 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:55,542 INFO L93 Difference]: Finished difference Result 78208 states and 123158 transitions. [2021-12-07 00:39:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:39:55,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-12-07 00:39:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:55,705 INFO L225 Difference]: With dead ends: 78208 [2021-12-07 00:39:55,705 INFO L226 Difference]: Without dead ends: 53441 [2021-12-07 00:39:55,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:55,766 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 1331 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:55,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 3952 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:39:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53441 states. [2021-12-07 00:39:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53441 to 49202. [2021-12-07 00:39:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49202 states, 37419 states have (on average 1.5003607792832518) internal successors, (56142), 37424 states have internal predecessors, (56142), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2021-12-07 00:39:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49202 states to 49202 states and 76628 transitions. [2021-12-07 00:39:57,193 INFO L78 Accepts]: Start accepts. Automaton has 49202 states and 76628 transitions. Word has length 35 [2021-12-07 00:39:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:57,194 INFO L470 AbstractCegarLoop]: Abstraction has 49202 states and 76628 transitions. [2021-12-07 00:39:57,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:39:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 49202 states and 76628 transitions. [2021-12-07 00:39:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:39:57,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:57,195 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] [2021-12-07 00:39:57,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:39:57,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:57,196 INFO L85 PathProgramCache]: Analyzing trace with hash -947297063, now seen corresponding path program 1 times [2021-12-07 00:39:57,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:57,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266527998] [2021-12-07 00:39:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:57,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-07 00:39:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:39:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:39:57,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:57,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266527998] [2021-12-07 00:39:57,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266527998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:57,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:57,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:39:57,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360972234] [2021-12-07 00:39:57,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:57,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:39:57,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:39:57,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:39:57,323 INFO L87 Difference]: Start difference. First operand 49202 states and 76628 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:00,020 INFO L93 Difference]: Finished difference Result 155408 states and 244534 transitions. [2021-12-07 00:40:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:40:00,021 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-12-07 00:40:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:00,357 INFO L225 Difference]: With dead ends: 155408 [2021-12-07 00:40:00,358 INFO L226 Difference]: Without dead ends: 106209 [2021-12-07 00:40:00,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:40:00,470 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1330 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:00,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 3982 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:40:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106209 states. [2021-12-07 00:40:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106209 to 97746. [2021-12-07 00:40:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97746 states, 74315 states have (on average 1.4986745609903789) internal successors, (111374), 74320 states have internal predecessors, (111374), 20358 states have call successors, (20358), 3073 states have call predecessors, (20358), 3072 states have return successors, (20352), 20352 states have call predecessors, (20352), 20352 states have call successors, (20352) [2021-12-07 00:40:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97746 states to 97746 states and 152084 transitions. [2021-12-07 00:40:03,285 INFO L78 Accepts]: Start accepts. Automaton has 97746 states and 152084 transitions. Word has length 36 [2021-12-07 00:40:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:03,285 INFO L470 AbstractCegarLoop]: Abstraction has 97746 states and 152084 transitions. [2021-12-07 00:40:03,285 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 97746 states and 152084 transitions. [2021-12-07 00:40:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:40:03,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:03,286 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] [2021-12-07 00:40:03,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:40:03,287 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:03,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1388157961, now seen corresponding path program 1 times [2021-12-07 00:40:03,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:03,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033418197] [2021-12-07 00:40:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:03,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:40:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:40:03,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033418197] [2021-12-07 00:40:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033418197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:03,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:03,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:40:03,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912859612] [2021-12-07 00:40:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:40:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:40:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:40:03,396 INFO L87 Difference]: Start difference. First operand 97746 states and 152084 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:08,040 INFO L93 Difference]: Finished difference Result 309360 states and 486326 transitions. [2021-12-07 00:40:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:40:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-07 00:40:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:08,757 INFO L225 Difference]: With dead ends: 309360 [2021-12-07 00:40:08,758 INFO L226 Difference]: Without dead ends: 211617 [2021-12-07 00:40:08,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:40:08,991 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 1339 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:08,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 4016 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:40:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211617 states. [2021-12-07 00:40:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211617 to 194706. [2021-12-07 00:40:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194706 states, 147979 states have (on average 1.49738814291217) internal successors, (221582), 147984 states have internal predecessors, (221582), 40582 states have call successors, (40582), 6145 states have call predecessors, (40582), 6144 states have return successors, (40576), 40576 states have call predecessors, (40576), 40576 states have call successors, (40576) [2021-12-07 00:40:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194706 states to 194706 states and 302740 transitions. [2021-12-07 00:40:14,798 INFO L78 Accepts]: Start accepts. Automaton has 194706 states and 302740 transitions. Word has length 34 [2021-12-07 00:40:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:14,798 INFO L470 AbstractCegarLoop]: Abstraction has 194706 states and 302740 transitions. [2021-12-07 00:40:14,799 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 194706 states and 302740 transitions. [2021-12-07 00:40:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:40:14,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:14,800 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, 1, 1] [2021-12-07 00:40:14,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:40:14,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1220342292, now seen corresponding path program 1 times [2021-12-07 00:40:14,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:14,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985956240] [2021-12-07 00:40:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:14,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:40:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:40:14,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985956240] [2021-12-07 00:40:14,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985956240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:14,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:14,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:40:14,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240616265] [2021-12-07 00:40:14,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:14,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:40:14,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:40:14,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:40:14,912 INFO L87 Difference]: Start difference. First operand 194706 states and 302740 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:23,520 INFO L93 Difference]: Finished difference Result 616368 states and 968118 transitions. [2021-12-07 00:40:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:40:23,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-12-07 00:40:23,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:24,969 INFO L225 Difference]: With dead ends: 616368 [2021-12-07 00:40:24,969 INFO L226 Difference]: Without dead ends: 421665 [2021-12-07 00:40:25,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:40:25,618 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 1332 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:25,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 4035 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:40:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421665 states. [2021-12-07 00:40:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421665 to 387858. [2021-12-07 00:40:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387858 states, 294667 states have (on average 1.4960820180067669) internal successors, (440846), 294672 states have internal predecessors, (440846), 80902 states have call successors, (80902), 12289 states have call predecessors, (80902), 12288 states have return successors, (80896), 80896 states have call predecessors, (80896), 80896 states have call successors, (80896) [2021-12-07 00:40:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387858 states to 387858 states and 602644 transitions. [2021-12-07 00:40:37,294 INFO L78 Accepts]: Start accepts. Automaton has 387858 states and 602644 transitions. Word has length 41 [2021-12-07 00:40:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:37,294 INFO L470 AbstractCegarLoop]: Abstraction has 387858 states and 602644 transitions. [2021-12-07 00:40:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 387858 states and 602644 transitions. [2021-12-07 00:40:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:40:37,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:37,296 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] [2021-12-07 00:40:37,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:40:37,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -499798764, now seen corresponding path program 1 times [2021-12-07 00:40:37,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:37,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301628023] [2021-12-07 00:40:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:37,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:40:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:40:37,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:37,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301628023] [2021-12-07 00:40:37,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301628023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:37,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:37,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:40:37,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936754180] [2021-12-07 00:40:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:37,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:40:37,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:40:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:40:37,416 INFO L87 Difference]: Start difference. First operand 387858 states and 602644 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:40:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:54,511 INFO L93 Difference]: Finished difference Result 1228080 states and 1927734 transitions. [2021-12-07 00:40:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:40:54,511 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-12-07 00:40:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:57,867 INFO L225 Difference]: With dead ends: 1228080 [2021-12-07 00:40:57,867 INFO L226 Difference]: Without dead ends: 840225 [2021-12-07 00:40:59,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:40:59,109 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1336 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3988 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:59,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 3988 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:40:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840225 states. [2021-12-07 00:41:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840225 to 772626. [2021-12-07 00:41:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772626 states, 586763 states have (on average 1.4947602353931655) internal successors, (877070), 586768 states have internal predecessors, (877070), 161286 states have call successors, (161286), 24577 states have call predecessors, (161286), 24576 states have return successors, (161280), 161280 states have call predecessors, (161280), 161280 states have call successors, (161280) [2021-12-07 00:41:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772626 states to 772626 states and 1199636 transitions. [2021-12-07 00:41:24,058 INFO L78 Accepts]: Start accepts. Automaton has 772626 states and 1199636 transitions. Word has length 37 [2021-12-07 00:41:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:24,058 INFO L470 AbstractCegarLoop]: Abstraction has 772626 states and 1199636 transitions. [2021-12-07 00:41:24,058 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:41:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 772626 states and 1199636 transitions. [2021-12-07 00:41:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 00:41:24,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:24,060 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, 1] [2021-12-07 00:41:24,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:41:24,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 337528076, now seen corresponding path program 1 times [2021-12-07 00:41:24,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:24,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851592071] [2021-12-07 00:41:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:24,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:41:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:41:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:24,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851592071] [2021-12-07 00:41:24,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851592071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:24,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:24,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:24,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666507827] [2021-12-07 00:41:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:24,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:41:24,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:41:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:41:24,171 INFO L87 Difference]: Start difference. First operand 772626 states and 1199636 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:41:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:59,326 INFO L93 Difference]: Finished difference Result 2446896 states and 3838518 transitions. [2021-12-07 00:41:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:41:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2021-12-07 00:41:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:06,343 INFO L225 Difference]: With dead ends: 2446896 [2021-12-07 00:42:06,343 INFO L226 Difference]: Without dead ends: 1674273 [2021-12-07 00:42:09,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:42:09,118 INFO L933 BasicCegarLoop]: 1660 mSDtfsCounter, 1333 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:09,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 4007 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:42:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674273 states.