./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--max16065.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_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/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_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/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_eec85f52-34f4-4118-848b-49aa225e6103/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 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:13:04,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:13:04,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:13:04,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:13:04,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:13:04,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:13:04,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:13:04,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:13:04,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:13:04,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:13:04,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:13:04,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:13:04,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:13:04,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:13:04,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:13:04,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:13:04,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:13:04,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:13:04,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:13:04,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:13:04,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:13:04,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:13:04,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:13:04,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:13:04,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:13:04,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:13:04,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:13:04,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:13:04,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:13:04,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:13:04,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:13:04,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:13:04,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:13:04,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:13:04,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:13:04,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:13:04,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:13:04,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:13:04,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:13:04,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:13:04,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:13:04,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:13:04,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:13:04,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:13:04,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:13:04,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:13:04,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:13:04,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:13:04,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:13:04,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:13:04,612 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:13:04,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:13:04,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:13:04,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:13:04,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:13:04,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:13:04,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:13:04,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:13:04,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:13:04,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:13:04,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:13:04,620 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_eec85f52-34f4-4118-848b-49aa225e6103/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2021-12-06 22:13:04,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:13:04,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:13:04,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:13:04,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:13:04,812 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:13:04,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-12-06 22:13:04,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/data/80db58ead/94fec31530114b8c828f3618a54396a5/FLAG779a1a814 [2021-12-06 22:13:05,419 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:13:05,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-12-06 22:13:05,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/data/80db58ead/94fec31530114b8c828f3618a54396a5/FLAG779a1a814 [2021-12-06 22:13:05,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/data/80db58ead/94fec31530114b8c828f3618a54396a5 [2021-12-06 22:13:05,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:13:05,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:13:05,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:13:05,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:13:05,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:13:05,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:13:05" (1/1) ... [2021-12-06 22:13:05,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53daa852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:05, skipping insertion in model container [2021-12-06 22:13:05,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:13:05" (1/1) ... [2021-12-06 22:13:05,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:13:05,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:13:06,552 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_eec85f52-34f4-4118-848b-49aa225e6103/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2021-12-06 22:13:06,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:13:06,660 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:13:06,799 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_eec85f52-34f4-4118-848b-49aa225e6103/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2021-12-06 22:13:06,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:13:06,967 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:13:06,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06 WrapperNode [2021-12-06 22:13:06,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:13:06,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:13:06,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:13:06,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:13:06,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,133 INFO L137 Inliner]: procedures = 115, calls = 2009, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5217 [2021-12-06 22:13:07,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:13:07,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:13:07,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:13:07,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:13:07,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:13:07,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:13:07,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:13:07,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:13:07,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (1/1) ... [2021-12-06 22:13:07,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:13:07,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:13:07,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:13:07,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eec85f52-34f4-4118-848b-49aa225e6103/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:13:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2021-12-06 22:13:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2021-12-06 22:13:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:13:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-06 22:13:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-06 22:13:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-06 22:13:07,402 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-06 22:13:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2021-12-06 22:13:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2021-12-06 22:13:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2021-12-06 22:13:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2021-12-06 22:13:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2021-12-06 22:13:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2021-12-06 22:13:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2021-12-06 22:13:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2021-12-06 22:13:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:13:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:13:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-12-06 22:13:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-12-06 22:13:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2021-12-06 22:13:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2021-12-06 22:13:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2021-12-06 22:13:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 22:13:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 22:13:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 22:13:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:13:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 22:13:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 22:13:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:13:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:13:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:13:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-12-06 22:13:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-12-06 22:13:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-06 22:13:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2021-12-06 22:13:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-06 22:13:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-06 22:13:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:13:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:13:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2021-12-06 22:13:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2021-12-06 22:13:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 22:13:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 22:13:07,811 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:13:07,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:13:10,986 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:13:11,001 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:13:11,001 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:13:11,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:13:11 BoogieIcfgContainer [2021-12-06 22:13:11,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:13:11,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:13:11,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:13:11,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:13:11,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:13:05" (1/3) ... [2021-12-06 22:13:11,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e9398e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:13:11, skipping insertion in model container [2021-12-06 22:13:11,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:13:06" (2/3) ... [2021-12-06 22:13:11,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e9398e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:13:11, skipping insertion in model container [2021-12-06 22:13:11,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:13:11" (3/3) ... [2021-12-06 22:13:11,010 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-12-06 22:13:11,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:13:11,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:13:11,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:13:11,063 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 [2021-12-06 22:13:11,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:13:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2021-12-06 22:13:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:13:11,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:11,115 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] [2021-12-06 22:13:11,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 497892406, now seen corresponding path program 1 times [2021-12-06 22:13:11,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:11,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680510220] [2021-12-06 22:13:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:11,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:13:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:11,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680510220] [2021-12-06 22:13:11,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680510220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:11,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:11,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:11,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851871417] [2021-12-06 22:13:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:11,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:11,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:11,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:11,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:11,782 INFO L87 Difference]: Start difference. First operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) 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) [2021-12-06 22:13:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:13,025 INFO L93 Difference]: Finished difference Result 3376 states and 5931 transitions. [2021-12-06 22:13:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:13,028 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 [2021-12-06 22:13:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:13,060 INFO L225 Difference]: With dead ends: 3376 [2021-12-06 22:13:13,060 INFO L226 Difference]: Without dead ends: 2275 [2021-12-06 22:13:13,074 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 [2021-12-06 22:13:13,077 INFO L933 BasicCegarLoop]: 2006 mSDtfsCounter, 1931 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:13,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2014 Valid, 5267 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:13:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-12-06 22:13:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2156. [2021-12-06 22:13:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1758 states have (on average 1.6046643913538112) internal successors, (2821), 1763 states have internal predecessors, (2821), 357 states have call successors, (357), 41 states have call predecessors, (357), 40 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2021-12-06 22:13:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3529 transitions. [2021-12-06 22:13:13,243 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3529 transitions. Word has length 33 [2021-12-06 22:13:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:13,243 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3529 transitions. [2021-12-06 22:13:13,244 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) [2021-12-06 22:13:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3529 transitions. [2021-12-06 22:13:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 22:13:13,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:13,247 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] [2021-12-06 22:13:13,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:13:13,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1011938999, now seen corresponding path program 1 times [2021-12-06 22:13:13,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976201137] [2021-12-06 22:13:13,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:13,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:13:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:13,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:13,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976201137] [2021-12-06 22:13:13,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976201137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:13,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:13,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:13,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491818969] [2021-12-06 22:13:13,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:13,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:13,546 INFO L87 Difference]: Start difference. First operand 2156 states and 3529 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) [2021-12-06 22:13:14,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:14,571 INFO L93 Difference]: Finished difference Result 6658 states and 11149 transitions. [2021-12-06 22:13:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:14,572 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 [2021-12-06 22:13:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:14,604 INFO L225 Difference]: With dead ends: 6658 [2021-12-06 22:13:14,605 INFO L226 Difference]: Without dead ends: 4505 [2021-12-06 22:13:14,613 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 [2021-12-06 22:13:14,615 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1908 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 5434 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:14,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 5434 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:13:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2021-12-06 22:13:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4282. [2021-12-06 22:13:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3495 states have (on average 1.6051502145922747) internal successors, (5610), 3500 states have internal predecessors, (5610), 706 states have call successors, (706), 81 states have call predecessors, (706), 80 states have return successors, (700), 700 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-06 22:13:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 7016 transitions. [2021-12-06 22:13:14,819 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 7016 transitions. Word has length 34 [2021-12-06 22:13:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:14,819 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 7016 transitions. [2021-12-06 22:13:14,820 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) [2021-12-06 22:13:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 7016 transitions. [2021-12-06 22:13:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:13:14,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:14,822 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] [2021-12-06 22:13:14,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:13:14,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash 762970933, now seen corresponding path program 1 times [2021-12-06 22:13:14,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:14,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730462414] [2021-12-06 22:13:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:14,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:13:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:15,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730462414] [2021-12-06 22:13:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730462414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:15,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844084185] [2021-12-06 22:13:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:15,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:15,076 INFO L87 Difference]: Start difference. First operand 4282 states and 7016 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) [2021-12-06 22:13:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:16,219 INFO L93 Difference]: Finished difference Result 13232 states and 22174 transitions. [2021-12-06 22:13:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:16,219 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 [2021-12-06 22:13:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:16,277 INFO L225 Difference]: With dead ends: 13232 [2021-12-06 22:13:16,277 INFO L226 Difference]: Without dead ends: 8953 [2021-12-06 22:13:16,294 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 [2021-12-06 22:13:16,295 INFO L933 BasicCegarLoop]: 1969 mSDtfsCounter, 1927 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:16,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 5194 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:13:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8953 states. [2021-12-06 22:13:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8953 to 8522. [2021-12-06 22:13:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8522 states, 6959 states have (on average 1.6051156775398765) internal successors, (11170), 6964 states have internal predecessors, (11170), 1402 states have call successors, (1402), 161 states have call predecessors, (1402), 160 states have return successors, (1396), 1396 states have call predecessors, (1396), 1396 states have call successors, (1396) [2021-12-06 22:13:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 13968 transitions. [2021-12-06 22:13:16,675 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 13968 transitions. Word has length 37 [2021-12-06 22:13:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:16,675 INFO L470 AbstractCegarLoop]: Abstraction has 8522 states and 13968 transitions. [2021-12-06 22:13:16,675 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) [2021-12-06 22:13:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 13968 transitions. [2021-12-06 22:13:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:13:16,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:16,678 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] [2021-12-06 22:13:16,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:13:16,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash -310797271, now seen corresponding path program 1 times [2021-12-06 22:13:16,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:16,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539100642] [2021-12-06 22:13:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:16,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:13:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:16,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:16,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539100642] [2021-12-06 22:13:16,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539100642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:16,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:16,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:16,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602620561] [2021-12-06 22:13:16,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:16,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:16,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:16,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:16,913 INFO L87 Difference]: Start difference. First operand 8522 states and 13968 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) [2021-12-06 22:13:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:18,110 INFO L93 Difference]: Finished difference Result 26344 states and 44154 transitions. [2021-12-06 22:13:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:18,111 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 [2021-12-06 22:13:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:18,209 INFO L225 Difference]: With dead ends: 26344 [2021-12-06 22:13:18,209 INFO L226 Difference]: Without dead ends: 17825 [2021-12-06 22:13:18,238 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 [2021-12-06 22:13:18,239 INFO L933 BasicCegarLoop]: 1986 mSDtfsCounter, 1916 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 5200 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:18,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 5200 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:13:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17825 states. [2021-12-06 22:13:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17825 to 16978. [2021-12-06 22:13:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16978 states, 13867 states have (on average 1.6048171918944256) internal successors, (22254), 13872 states have internal predecessors, (22254), 2790 states have call successors, (2790), 321 states have call predecessors, (2790), 320 states have return successors, (2784), 2784 states have call predecessors, (2784), 2784 states have call successors, (2784) [2021-12-06 22:13:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 27828 transitions. [2021-12-06 22:13:18,836 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 27828 transitions. Word has length 41 [2021-12-06 22:13:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:18,837 INFO L470 AbstractCegarLoop]: Abstraction has 16978 states and 27828 transitions. [2021-12-06 22:13:18,837 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) [2021-12-06 22:13:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 27828 transitions. [2021-12-06 22:13:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 22:13:18,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:18,839 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, 1, 1, 1, 1, 1] [2021-12-06 22:13:18,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:13:18,839 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1087085416, now seen corresponding path program 1 times [2021-12-06 22:13:18,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:18,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820803461] [2021-12-06 22:13:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:18,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:13:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:13:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:19,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820803461] [2021-12-06 22:13:19,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820803461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:19,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:19,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:19,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920375959] [2021-12-06 22:13:19,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:19,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:19,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:19,035 INFO L87 Difference]: Start difference. First operand 16978 states and 27828 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:20,233 INFO L93 Difference]: Finished difference Result 52432 states and 87862 transitions. [2021-12-06 22:13:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2021-12-06 22:13:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:20,338 INFO L225 Difference]: With dead ends: 52432 [2021-12-06 22:13:20,338 INFO L226 Difference]: Without dead ends: 35457 [2021-12-06 22:13:20,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:13:20,383 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1917 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:20,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 5210 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:13:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35457 states. [2021-12-06 22:13:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35457 to 33778. [2021-12-06 22:13:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33778 states, 27595 states have (on average 1.6042761369813372) internal successors, (44270), 27600 states have internal predecessors, (44270), 5542 states have call successors, (5542), 641 states have call predecessors, (5542), 640 states have return successors, (5536), 5536 states have call predecessors, (5536), 5536 states have call successors, (5536) [2021-12-06 22:13:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33778 states to 33778 states and 55348 transitions. [2021-12-06 22:13:21,470 INFO L78 Accepts]: Start accepts. Automaton has 33778 states and 55348 transitions. Word has length 46 [2021-12-06 22:13:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:21,470 INFO L470 AbstractCegarLoop]: Abstraction has 33778 states and 55348 transitions. [2021-12-06 22:13:21,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 33778 states and 55348 transitions. [2021-12-06 22:13:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:13:21,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:21,473 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] [2021-12-06 22:13:21,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:13:21,473 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 82953336, now seen corresponding path program 1 times [2021-12-06 22:13:21,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898480808] [2021-12-06 22:13:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:21,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:13:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:13:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:21,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:21,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898480808] [2021-12-06 22:13:21,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898480808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:21,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:21,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:21,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235830777] [2021-12-06 22:13:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:21,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:21,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:21,690 INFO L87 Difference]: Start difference. First operand 33778 states and 55348 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:23,334 INFO L93 Difference]: Finished difference Result 104336 states and 174774 transitions. [2021-12-06 22:13:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:23,335 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-12-06 22:13:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:23,538 INFO L225 Difference]: With dead ends: 104336 [2021-12-06 22:13:23,538 INFO L226 Difference]: Without dead ends: 70561 [2021-12-06 22:13:23,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:13:23,608 INFO L933 BasicCegarLoop]: 2034 mSDtfsCounter, 1911 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 5281 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:23,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2017 Valid, 5281 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:13:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70561 states. [2021-12-06 22:13:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70561 to 67218. [2021-12-06 22:13:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67218 states, 54923 states have (on average 1.6036633104528157) internal successors, (88078), 54928 states have internal predecessors, (88078), 11014 states have call successors, (11014), 1281 states have call predecessors, (11014), 1280 states have return successors, (11008), 11008 states have call predecessors, (11008), 11008 states have call successors, (11008) [2021-12-06 22:13:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67218 states to 67218 states and 110100 transitions. [2021-12-06 22:13:25,718 INFO L78 Accepts]: Start accepts. Automaton has 67218 states and 110100 transitions. Word has length 41 [2021-12-06 22:13:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:25,718 INFO L470 AbstractCegarLoop]: Abstraction has 67218 states and 110100 transitions. [2021-12-06 22:13:25,719 INFO L471 AbstractCegarLoop]: INTERPOLANT 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 67218 states and 110100 transitions. [2021-12-06 22:13:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:13:25,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:25,720 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, 1, 1, 1, 1, 1, 1] [2021-12-06 22:13:25,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:13:25,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash -737447042, now seen corresponding path program 1 times [2021-12-06 22:13:25,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:25,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180101034] [2021-12-06 22:13:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:25,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:25,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:13:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:13:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:25,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:25,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180101034] [2021-12-06 22:13:25,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180101034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:25,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:25,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:25,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457352445] [2021-12-06 22:13:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:25,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:25,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:25,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:25,903 INFO L87 Difference]: Start difference. First operand 67218 states and 110100 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:28,818 INFO L93 Difference]: Finished difference Result 207664 states and 347702 transitions. [2021-12-06 22:13:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:28,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2021-12-06 22:13:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:29,443 INFO L225 Difference]: With dead ends: 207664 [2021-12-06 22:13:29,444 INFO L226 Difference]: Without dead ends: 140449 [2021-12-06 22:13:29,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:13:29,572 INFO L933 BasicCegarLoop]: 2121 mSDtfsCounter, 1900 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:29,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 5494 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:13:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140449 states. [2021-12-06 22:13:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140449 to 133778. [2021-12-06 22:13:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133778 states, 109323 states have (on average 1.6030112602105686) internal successors, (175246), 109328 states have internal predecessors, (175246), 21894 states have call successors, (21894), 2561 states have call predecessors, (21894), 2560 states have return successors, (21888), 21888 states have call predecessors, (21888), 21888 states have call successors, (21888) [2021-12-06 22:13:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133778 states to 133778 states and 219028 transitions. [2021-12-06 22:13:33,823 INFO L78 Accepts]: Start accepts. Automaton has 133778 states and 219028 transitions. Word has length 47 [2021-12-06 22:13:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:33,823 INFO L470 AbstractCegarLoop]: Abstraction has 133778 states and 219028 transitions. [2021-12-06 22:13:33,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 133778 states and 219028 transitions. [2021-12-06 22:13:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 22:13:33,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:33,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:13:33,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:13:33,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash 198593437, now seen corresponding path program 1 times [2021-12-06 22:13:33,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194954963] [2021-12-06 22:13:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:33,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:13:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 22:13:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:34,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:34,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194954963] [2021-12-06 22:13:34,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194954963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:34,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:34,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:34,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252901984] [2021-12-06 22:13:34,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:34,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:34,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:34,017 INFO L87 Difference]: Start difference. First operand 133778 states and 219028 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:39,057 INFO L93 Difference]: Finished difference Result 413360 states and 691766 transitions. [2021-12-06 22:13:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2021-12-06 22:13:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:40,032 INFO L225 Difference]: With dead ends: 413360 [2021-12-06 22:13:40,032 INFO L226 Difference]: Without dead ends: 279585 [2021-12-06 22:13:40,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:13:40,315 INFO L933 BasicCegarLoop]: 2130 mSDtfsCounter, 1896 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:40,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 5504 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:13:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279585 states. [2021-12-06 22:13:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279585 to 266258. [2021-12-06 22:13:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266258 states, 217611 states have (on average 1.6023362789564866) internal successors, (348686), 217616 states have internal predecessors, (348686), 43526 states have call successors, (43526), 5121 states have call predecessors, (43526), 5120 states have return successors, (43520), 43520 states have call predecessors, (43520), 43520 states have call successors, (43520) [2021-12-06 22:13:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266258 states to 266258 states and 435732 transitions. [2021-12-06 22:13:48,626 INFO L78 Accepts]: Start accepts. Automaton has 266258 states and 435732 transitions. Word has length 51 [2021-12-06 22:13:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:48,627 INFO L470 AbstractCegarLoop]: Abstraction has 266258 states and 435732 transitions. [2021-12-06 22:13:48,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 266258 states and 435732 transitions. [2021-12-06 22:13:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:13:48,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:48,629 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, 1] [2021-12-06 22:13:48,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:13:48,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash -843141897, now seen corresponding path program 1 times [2021-12-06 22:13:48,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:48,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706054688] [2021-12-06 22:13:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:48,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:13:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:13:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:48,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:48,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706054688] [2021-12-06 22:13:48,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706054688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:48,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:48,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:13:48,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999149180] [2021-12-06 22:13:48,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:48,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:13:48,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:13:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:13:48,797 INFO L87 Difference]: Start difference. First operand 266258 states and 435732 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:13:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:58,268 INFO L93 Difference]: Finished difference Result 822832 states and 1376310 transitions. [2021-12-06 22:13:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:13:58,268 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2021-12-06 22:13:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:00,180 INFO L225 Difference]: With dead ends: 822832 [2021-12-06 22:14:00,180 INFO L226 Difference]: Without dead ends: 556577 [2021-12-06 22:14:00,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:00,775 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 1922 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:00,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 5620 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:14:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556577 states. [2021-12-06 22:14:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556577 to 529938. [2021-12-06 22:14:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529938 states, 433163 states have (on average 1.601646493352387) internal successors, (693774), 433168 states have internal predecessors, (693774), 86534 states have call successors, (86534), 10241 states have call predecessors, (86534), 10240 states have return successors, (86528), 86528 states have call predecessors, (86528), 86528 states have call successors, (86528) [2021-12-06 22:14:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529938 states to 529938 states and 866836 transitions. [2021-12-06 22:14:17,954 INFO L78 Accepts]: Start accepts. Automaton has 529938 states and 866836 transitions. Word has length 42 [2021-12-06 22:14:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:17,955 INFO L470 AbstractCegarLoop]: Abstraction has 529938 states and 866836 transitions. [2021-12-06 22:14:17,955 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), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:14:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 529938 states and 866836 transitions. [2021-12-06 22:14:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:14:17,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:17,957 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:17,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:14:17,958 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 952591992, now seen corresponding path program 1 times [2021-12-06 22:14:17,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004033441] [2021-12-06 22:14:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:17,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:14:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:14:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:18,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:18,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004033441] [2021-12-06 22:14:18,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004033441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:18,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:18,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:18,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265488519] [2021-12-06 22:14:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:18,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:14:18,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:14:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:14:18,304 INFO L87 Difference]: Start difference. First operand 529938 states and 866836 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:14:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:37,270 INFO L93 Difference]: Finished difference Result 1637936 states and 2738230 transitions. [2021-12-06 22:14:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-06 22:14:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:41,356 INFO L225 Difference]: With dead ends: 1637936 [2021-12-06 22:14:41,357 INFO L226 Difference]: Without dead ends: 1108001 [2021-12-06 22:14:42,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:42,823 INFO L933 BasicCegarLoop]: 2115 mSDtfsCounter, 1901 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:42,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 5474 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:14:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108001 states. [2021-12-06 22:15:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108001 to 1054738. [2021-12-06 22:15:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054738 states, 862219 states have (on average 1.6009459313701044) internal successors, (1380366), 862224 states have internal predecessors, (1380366), 172038 states have call successors, (172038), 20481 states have call predecessors, (172038), 20480 states have return successors, (172032), 172032 states have call predecessors, (172032), 172032 states have call successors, (172032) [2021-12-06 22:15:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054738 states to 1054738 states and 1724436 transitions. [2021-12-06 22:15:18,130 INFO L78 Accepts]: Start accepts. Automaton has 1054738 states and 1724436 transitions. Word has length 49 [2021-12-06 22:15:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:18,131 INFO L470 AbstractCegarLoop]: Abstraction has 1054738 states and 1724436 transitions. [2021-12-06 22:15:18,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:15:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1054738 states and 1724436 transitions. [2021-12-06 22:15:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:15:18,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:18,133 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, 1, 1] [2021-12-06 22:15:18,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:15:18,133 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1725755389, now seen corresponding path program 1 times [2021-12-06 22:15:18,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:18,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182747879] [2021-12-06 22:15:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:18,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:15:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:15:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:18,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182747879] [2021-12-06 22:15:18,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182747879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:18,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:18,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:15:18,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602746546] [2021-12-06 22:15:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:18,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:15:18,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:15:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:15:18,298 INFO L87 Difference]: Start difference. First operand 1054738 states and 1724436 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)