./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/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_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:20:11,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:20:11,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:20:11,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:20:11,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:20:11,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:20:11,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:20:11,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:20:11,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:20:11,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:20:11,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:20:11,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:20:11,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:20:11,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:20:11,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:20:11,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:20:11,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:20:11,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:20:11,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:20:11,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:20:11,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:20:11,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:20:11,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:20:11,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:20:11,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:20:11,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:20:11,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:20:11,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:20:11,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:20:11,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:20:11,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:20:11,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:20:11,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:20:11,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:20:11,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:20:11,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:20:11,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:20:11,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:20:11,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:20:11,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:20:11,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:20:11,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:20:11,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:20:11,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:20:11,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:20:11,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:20:11,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:20:11,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:20:11,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:20:11,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:20:11,617 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:20:11,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:20:11,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:20:11,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:20:11,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:20:11,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:20:11,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:20:11,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:20:11,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:20:11,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:20:11,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:20:11,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:20:11,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:20:11,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:20:11,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:20:11,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:20:11,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:20:11,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:20:11,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:20:11,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:20:11,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:20:11,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:20:11,624 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_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2022-11-20 12:20:11,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:20:12,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:20:12,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:20:12,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:20:12,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:20:12,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-11-20 12:20:15,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:20:15,954 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:20:15,959 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-11-20 12:20:16,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/data/55d1349e0/37c253b5784748d1907cd013010d2e07/FLAG620cf3d69 [2022-11-20 12:20:16,039 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/data/55d1349e0/37c253b5784748d1907cd013010d2e07 [2022-11-20 12:20:16,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:20:16,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:20:16,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:16,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:20:16,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:20:16,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:16" (1/1) ... [2022-11-20 12:20:16,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54fb53d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:16, skipping insertion in model container [2022-11-20 12:20:16,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:20:16" (1/1) ... [2022-11-20 12:20:16,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:20:16,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:20:17,375 WARN L237 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_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-11-20 12:20:17,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:17,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:20:17,850 WARN L237 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_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2022-11-20 12:20:17,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:20:18,148 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:20:18,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18 WrapperNode [2022-11-20 12:20:18,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:20:18,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:18,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:20:18,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:20:18,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,454 INFO L138 Inliner]: procedures = 115, calls = 2153, calls flagged for inlining = 45, calls inlined = 37, statements flattened = 5373 [2022-11-20 12:20:18,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:20:18,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:20:18,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:20:18,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:20:18,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:20:18,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:20:18,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:20:18,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:20:18,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (1/1) ... [2022-11-20 12:20:18,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:20:18,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:18,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:20:18,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:20:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2022-11-20 12:20:18,941 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2022-11-20 12:20:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:20:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-20 12:20:18,941 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-20 12:20:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-20 12:20:18,942 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-20 12:20:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2022-11-20 12:20:18,942 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2022-11-20 12:20:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2022-11-20 12:20:18,943 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2022-11-20 12:20:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2022-11-20 12:20:18,944 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2022-11-20 12:20:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2022-11-20 12:20:18,944 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2022-11-20 12:20:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:20:18,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:20:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-11-20 12:20:18,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2022-11-20 12:20:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2022-11-20 12:20:18,945 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2022-11-20 12:20:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2022-11-20 12:20:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2022-11-20 12:20:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:20:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:20:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:20:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:20:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:20:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:20:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:20:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:20:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 12:20:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 12:20:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:20:18,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:20:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:20:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-11-20 12:20:18,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2022-11-20 12:20:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-20 12:20:18,951 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-20 12:20:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:20:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:20:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:20:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2022-11-20 12:20:18,951 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2022-11-20 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-20 12:20:18,952 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-20 12:20:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:20:18,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-11-20 12:20:18,953 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-11-20 12:20:18,953 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 12:20:18,953 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 12:20:19,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:20:19,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:20:26,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:20:26,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:20:26,884 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:20:26,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:26 BoogieIcfgContainer [2022-11-20 12:20:26,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:20:26,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:20:26,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:20:26,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:20:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:20:16" (1/3) ... [2022-11-20 12:20:26,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf165c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:20:26, skipping insertion in model container [2022-11-20 12:20:26,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:20:18" (2/3) ... [2022-11-20 12:20:26,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf165c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:20:26, skipping insertion in model container [2022-11-20 12:20:26,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:20:26" (3/3) ... [2022-11-20 12:20:26,915 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2022-11-20 12:20:26,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:20:26,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:20:27,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:20:27,079 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5646e7ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:20:27,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:20:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 1103 states, 898 states have (on average 1.6057906458797326) internal successors, (1442), 905 states have internal predecessors, (1442), 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) [2022-11-20 12:20:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 12:20:27,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:27,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:27,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 391711024, now seen corresponding path program 1 times [2022-11-20 12:20:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200604310] [2022-11-20 12:20:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:20:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:28,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200604310] [2022-11-20 12:20:28,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200604310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:28,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:28,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:20:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158195536] [2022-11-20 12:20:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:28,507 INFO L87 Difference]: Start difference. First operand has 1103 states, 898 states have (on average 1.6057906458797326) internal successors, (1442), 905 states have internal predecessors, (1442), 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) [2022-11-20 12:20:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:31,207 INFO L93 Difference]: Finished difference Result 3409 states and 5992 transitions. [2022-11-20 12:20:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:31,211 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 [2022-11-20 12:20:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:31,248 INFO L225 Difference]: With dead ends: 3409 [2022-11-20 12:20:31,248 INFO L226 Difference]: Without dead ends: 2301 [2022-11-20 12:20:31,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:20:31,267 INFO L413 NwaCegarLoop]: 2024 mSDtfsCounter, 1949 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 5327 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:31,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 5327 Invalid, 892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [419 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:20:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2022-11-20 12:20:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2170. [2022-11-20 12:20:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 1772 states have (on average 1.6066591422121896) internal successors, (2847), 1777 states have internal predecessors, (2847), 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) [2022-11-20 12:20:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3555 transitions. [2022-11-20 12:20:31,560 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3555 transitions. Word has length 33 [2022-11-20 12:20:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:31,560 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 3555 transitions. [2022-11-20 12:20:31,561 INFO L496 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) [2022-11-20 12:20:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3555 transitions. [2022-11-20 12:20:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 12:20:31,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:31,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:31,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:20:31,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:31,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1264101551, now seen corresponding path program 1 times [2022-11-20 12:20:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48609899] [2022-11-20 12:20:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 12:20:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:32,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:32,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48609899] [2022-11-20 12:20:32,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48609899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:32,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:32,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:20:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910177206] [2022-11-20 12:20:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:32,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:32,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:32,395 INFO L87 Difference]: Start difference. First operand 2170 states and 3555 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) [2022-11-20 12:20:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:34,607 INFO L93 Difference]: Finished difference Result 6724 states and 11271 transitions. [2022-11-20 12:20:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:34,608 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 [2022-11-20 12:20:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:34,645 INFO L225 Difference]: With dead ends: 6724 [2022-11-20 12:20:34,645 INFO L226 Difference]: Without dead ends: 4557 [2022-11-20 12:20:34,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:20:34,660 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 1960 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 5416 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:34,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 5416 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:20:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2022-11-20 12:20:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4310. [2022-11-20 12:20:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3523 states have (on average 1.6071529946068692) internal successors, (5662), 3528 states have internal predecessors, (5662), 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) [2022-11-20 12:20:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7068 transitions. [2022-11-20 12:20:34,963 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7068 transitions. Word has length 37 [2022-11-20 12:20:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:34,964 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 7068 transitions. [2022-11-20 12:20:34,964 INFO L496 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) [2022-11-20 12:20:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7068 transitions. [2022-11-20 12:20:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 12:20:34,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:34,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:34,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:20:34,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1423890463, now seen corresponding path program 1 times [2022-11-20 12:20:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:34,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977246882] [2022-11-20 12:20:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:20:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:35,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:35,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977246882] [2022-11-20 12:20:35,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977246882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:35,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:35,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:20:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809029536] [2022-11-20 12:20:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:35,636 INFO L87 Difference]: Start difference. First operand 4310 states and 7068 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:20:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:38,017 INFO L93 Difference]: Finished difference Result 13364 states and 22418 transitions. [2022-11-20 12:20:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-20 12:20:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:38,090 INFO L225 Difference]: With dead ends: 13364 [2022-11-20 12:20:38,090 INFO L226 Difference]: Without dead ends: 9057 [2022-11-20 12:20:38,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:20:38,116 INFO L413 NwaCegarLoop]: 1983 mSDtfsCounter, 1968 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:38,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 5254 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:20:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2022-11-20 12:20:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 8578. [2022-11-20 12:20:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8578 states, 7015 states have (on average 1.607127583749109) internal successors, (11274), 7020 states have internal predecessors, (11274), 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) [2022-11-20 12:20:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8578 states to 8578 states and 14072 transitions. [2022-11-20 12:20:38,752 INFO L78 Accepts]: Start accepts. Automaton has 8578 states and 14072 transitions. Word has length 34 [2022-11-20 12:20:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 8578 states and 14072 transitions. [2022-11-20 12:20:38,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:20:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8578 states and 14072 transitions. [2022-11-20 12:20:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:20:38,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:38,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:20:38,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1318397405, now seen corresponding path program 1 times [2022-11-20 12:20:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081711311] [2022-11-20 12:20:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:20:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081711311] [2022-11-20 12:20:39,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081711311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:20:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368338481] [2022-11-20 12:20:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:20:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:20:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:20:39,425 INFO L87 Difference]: Start difference. First operand 8578 states and 14072 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) [2022-11-20 12:20:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:41,962 INFO L93 Difference]: Finished difference Result 26608 states and 44642 transitions. [2022-11-20 12:20:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:20:41,964 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 [2022-11-20 12:20:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:42,114 INFO L225 Difference]: With dead ends: 26608 [2022-11-20 12:20:42,114 INFO L226 Difference]: Without dead ends: 18033 [2022-11-20 12:20:42,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:20:42,176 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 1962 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:42,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 5277 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:20:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2022-11-20 12:20:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17090. [2022-11-20 12:20:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17090 states, 13979 states have (on average 1.6068388296730811) internal successors, (22462), 13984 states have internal predecessors, (22462), 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) [2022-11-20 12:20:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17090 states to 17090 states and 28036 transitions. [2022-11-20 12:20:43,430 INFO L78 Accepts]: Start accepts. Automaton has 17090 states and 28036 transitions. Word has length 41 [2022-11-20 12:20:43,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:43,431 INFO L495 AbstractCegarLoop]: Abstraction has 17090 states and 28036 transitions. [2022-11-20 12:20:43,432 INFO L496 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) [2022-11-20 12:20:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17090 states and 28036 transitions. [2022-11-20 12:20:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:20:43,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:43,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:43,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:20:43,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash 326667952, now seen corresponding path program 1 times [2022-11-20 12:20:43,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:43,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242397896] [2022-11-20 12:20:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:43,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:43,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:43,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242397896] [2022-11-20 12:20:43,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:20:43,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42352664] [2022-11-20 12:20:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:43,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:43,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:43,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:20:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:45,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 6998 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:20:45,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:46,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:20:46,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42352664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:46,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:46,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680536414] [2022-11-20 12:20:46,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:46,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:20:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:20:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:20:46,058 INFO L87 Difference]: Start difference. First operand 17090 states and 28036 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:20:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:47,393 INFO L93 Difference]: Finished difference Result 51200 states and 84006 transitions. [2022-11-20 12:20:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:20:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-20 12:20:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:47,574 INFO L225 Difference]: With dead ends: 51200 [2022-11-20 12:20:47,574 INFO L226 Difference]: Without dead ends: 34113 [2022-11-20 12:20:47,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:20:47,651 INFO L413 NwaCegarLoop]: 2005 mSDtfsCounter, 1772 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:47,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 3786 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:20:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34113 states. [2022-11-20 12:20:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34113 to 34098. [2022-11-20 12:20:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34098 states, 27915 states have (on average 1.6065197922264016) internal successors, (44846), 27920 states have internal predecessors, (44846), 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) [2022-11-20 12:20:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34098 states to 34098 states and 55924 transitions. [2022-11-20 12:20:50,005 INFO L78 Accepts]: Start accepts. Automaton has 34098 states and 55924 transitions. Word has length 46 [2022-11-20 12:20:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:50,007 INFO L495 AbstractCegarLoop]: Abstraction has 34098 states and 55924 transitions. [2022-11-20 12:20:50,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:20:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 34098 states and 55924 transitions. [2022-11-20 12:20:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:20:50,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:50,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:50,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:50,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1676985194, now seen corresponding path program 1 times [2022-11-20 12:20:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255595709] [2022-11-20 12:20:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:50,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:50,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255595709] [2022-11-20 12:20:50,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:20:50,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190688564] [2022-11-20 12:20:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:50,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:50,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:50,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:20:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:52,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 6986 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:20:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:20:52,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:20:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190688564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:20:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957326460] [2022-11-20 12:20:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:20:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:20:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:20:52,718 INFO L87 Difference]: Start difference. First operand 34098 states and 55924 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:20:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:54,537 INFO L93 Difference]: Finished difference Result 102160 states and 167574 transitions. [2022-11-20 12:20:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:20:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-20 12:20:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:55,099 INFO L225 Difference]: With dead ends: 102160 [2022-11-20 12:20:55,110 INFO L226 Difference]: Without dead ends: 68065 [2022-11-20 12:20:55,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:20:55,235 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 1778 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:55,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1778 Valid, 3792 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:20:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68065 states. [2022-11-20 12:20:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68065 to 68050. [2022-11-20 12:20:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68050 states, 55755 states have (on average 1.606133979015335) internal successors, (89550), 55760 states have internal predecessors, (89550), 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) [2022-11-20 12:20:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68050 states to 68050 states and 111572 transitions. [2022-11-20 12:20:59,240 INFO L78 Accepts]: Start accepts. Automaton has 68050 states and 111572 transitions. Word has length 40 [2022-11-20 12:20:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:59,242 INFO L495 AbstractCegarLoop]: Abstraction has 68050 states and 111572 transitions. [2022-11-20 12:20:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:20:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 68050 states and 111572 transitions. [2022-11-20 12:20:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:20:59,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:59,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:20:59,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 12:20:59,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:59,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:59,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -350159506, now seen corresponding path program 1 times [2022-11-20 12:20:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:59,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160008397] [2022-11-20 12:20:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:59,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:59,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160008397] [2022-11-20 12:20:59,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:20:59,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611264611] [2022-11-20 12:20:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:20:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:20:59,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:21:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:02,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 6988 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:21:02,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:02,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:02,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611264611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:02,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:02,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899939987] [2022-11-20 12:21:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:02,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:02,127 INFO L87 Difference]: Start difference. First operand 68050 states and 111572 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:21:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:05,745 INFO L93 Difference]: Finished difference Result 203888 states and 334326 transitions. [2022-11-20 12:21:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-20 12:21:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:06,448 INFO L225 Difference]: With dead ends: 203888 [2022-11-20 12:21:06,448 INFO L226 Difference]: Without dead ends: 135841 [2022-11-20 12:21:06,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:06,680 INFO L413 NwaCegarLoop]: 2017 mSDtfsCounter, 1777 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:06,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 3798 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:21:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135841 states. [2022-11-20 12:21:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135841 to 135826. [2022-11-20 12:21:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135826 states, 111371 states have (on average 1.605714234405725) internal successors, (178830), 111376 states have internal predecessors, (178830), 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) [2022-11-20 12:21:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135826 states to 135826 states and 222612 transitions. [2022-11-20 12:21:13,644 INFO L78 Accepts]: Start accepts. Automaton has 135826 states and 222612 transitions. Word has length 41 [2022-11-20 12:21:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:13,645 INFO L495 AbstractCegarLoop]: Abstraction has 135826 states and 222612 transitions. [2022-11-20 12:21:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:21:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 135826 states and 222612 transitions. [2022-11-20 12:21:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:21:13,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:13,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:13,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:21:13,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:21:13,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash 410577363, now seen corresponding path program 1 times [2022-11-20 12:21:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:13,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221518885] [2022-11-20 12:21:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221518885] [2022-11-20 12:21:14,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:21:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033771294] [2022-11-20 12:21:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:14,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:21:14,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:14,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:21:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_badc9e67-ab04-4f80-bf37-394ea3ec3cd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:21:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:16,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 7008 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:21:16,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:16,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:21:16,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033771294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:16,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:16,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309770194] [2022-11-20 12:21:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:16,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:16,272 INFO L87 Difference]: Start difference. First operand 135826 states and 222612 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:21:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:23,817 INFO L93 Difference]: Finished difference Result 406960 states and 667062 transitions. [2022-11-20 12:21:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-20 12:21:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:25,688 INFO L225 Difference]: With dead ends: 406960 [2022-11-20 12:21:25,688 INFO L226 Difference]: Without dead ends: 271137 [2022-11-20 12:21:26,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:26,145 INFO L413 NwaCegarLoop]: 2023 mSDtfsCounter, 1767 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:26,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 3804 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:21:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271137 states.