./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:09:32,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:09:32,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:09:32,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:09:32,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:09:32,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:09:32,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:09:32,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:09:32,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:09:32,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:09:32,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:09:32,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:09:32,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:09:32,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:09:32,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:09:32,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:09:32,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:09:32,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:09:32,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:09:32,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:09:32,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:09:32,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:09:32,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:09:32,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:09:32,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:09:32,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:09:32,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:09:32,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:09:32,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:09:32,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:09:32,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:09:32,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:09:32,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:09:32,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:09:32,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:09:32,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:09:32,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:09:32,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:09:32,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:09:32,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:09:32,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:09:32,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:09:32,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:09:32,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:09:32,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:09:32,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:09:32,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:09:32,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:09:32,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:09:32,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:09:32,781 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:09:32,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:09:32,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:09:32,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:09:32,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:09:32,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:09:32,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:09:32,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:09:32,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:09:32,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:09:32,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:09:32,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:09:32,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:09:32,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:09:32,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:09:32,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:09:32,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:09:32,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:09:32,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:09:32,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:09:32,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:09:32,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:09:32,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:09:32,787 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_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-11-13 18:09:33,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:09:33,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:09:33,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:09:33,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:09:33,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:09:33,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:09:33,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/3cc958020/958dd25eda654bd79ce411f783c89bfa/FLAG08dfd4448 [2021-11-13 18:09:34,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:09:34,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:09:34,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/3cc958020/958dd25eda654bd79ce411f783c89bfa/FLAG08dfd4448 [2021-11-13 18:09:34,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/3cc958020/958dd25eda654bd79ce411f783c89bfa [2021-11-13 18:09:34,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:09:34,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:09:34,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:09:34,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:09:34,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:09:34,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:09:34" (1/1) ... [2021-11-13 18:09:34,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781e8c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:34, skipping insertion in model container [2021-11-13 18:09:34,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:09:34" (1/1) ... [2021-11-13 18:09:34,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:09:34,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:09:35,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-11-13 18:09:36,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:09:36,175 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:09:36,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-11-13 18:09:36,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:09:36,635 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:09:36,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36 WrapperNode [2021-11-13 18:09:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:09:36,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:09:36,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:09:36,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:09:36,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:09:36,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:09:36,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:09:36,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:09:36,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:36,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:37,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:37,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:09:37,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:09:37,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:09:37,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:09:37,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (1/1) ... [2021-11-13 18:09:37,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:09:37,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:09:37,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:09:37,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:09:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-11-13 18:09:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-11-13 18:09:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:09:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:09:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:09:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:09:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:09:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:09:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-11-13 18:09:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-11-13 18:09:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-11-13 18:09:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-11-13 18:09:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-11-13 18:09:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-11-13 18:09:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-11-13 18:09:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-11-13 18:09:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:09:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:09:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-13 18:09:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-13 18:09:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:09:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:09:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-11-13 18:09:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-11-13 18:09:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-11-13 18:09:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-11-13 18:09:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-11-13 18:09:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-11-13 18:09:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:09:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:09:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 18:09:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 18:09:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-11-13 18:09:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-11-13 18:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:09:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 18:09:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 18:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:09:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 18:09:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 18:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-11-13 18:09:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-11-13 18:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:09:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-11-13 18:09:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-11-13 18:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-11-13 18:09:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-11-13 18:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-11-13 18:09:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-11-13 18:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:09:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-11-13 18:09:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-11-13 18:09:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-11-13 18:09:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-11-13 18:09:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-11-13 18:09:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-11-13 18:09:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-11-13 18:09:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-11-13 18:09:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:09:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:09:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:09:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-11-13 18:09:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-11-13 18:09:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:09:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-11-13 18:09:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-11-13 18:09:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:09:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:09:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-11-13 18:09:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-11-13 18:09:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-11-13 18:09:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-11-13 18:09:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-11-13 18:09:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-11-13 18:09:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-11-13 18:09:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-11-13 18:09:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:09:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 18:09:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 18:09:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:09:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:09:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-11-13 18:09:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-11-13 18:09:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 18:09:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 18:09:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-11-13 18:09:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-11-13 18:09:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-11-13 18:09:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-11-13 18:09:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:09:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:09:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 18:09:37,210 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 18:09:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:09:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-11-13 18:09:37,211 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-11-13 18:09:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-11-13 18:09:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-11-13 18:09:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-11-13 18:09:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-11-13 18:09:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-11-13 18:09:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-11-13 18:09:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-11-13 18:09:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-11-13 18:09:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-11-13 18:09:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-11-13 18:09:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:09:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:09:37,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:09:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:09:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:09:37,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:09:38,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:09:45,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:09:45,808 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:09:45,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:09:45 BoogieIcfgContainer [2021-11-13 18:09:45,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:09:45,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:09:45,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:09:45,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:09:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:09:34" (1/3) ... [2021-11-13 18:09:45,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3e9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:09:45, skipping insertion in model container [2021-11-13 18:09:45,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:09:36" (2/3) ... [2021-11-13 18:09:45,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3e9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:09:45, skipping insertion in model container [2021-11-13 18:09:45,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:09:45" (3/3) ... [2021-11-13 18:09:45,831 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:09:45,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:09:45,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:09:45,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:09:45,926 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:09:45,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:09:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-11-13 18:09:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:09:46,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:46,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:09:46,036 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-11-13 18:09:46,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:46,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772630655] [2021-11-13 18:09:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:46,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:09:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:09:46,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:46,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772630655] [2021-11-13 18:09:46,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772630655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:46,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:46,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:09:46,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274603778] [2021-11-13 18:09:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:46,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:09:46,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:09:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:09:46,943 INFO L87 Difference]: Start difference. First operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:09:48,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:52,385 INFO L93 Difference]: Finished difference Result 2587 states and 3777 transitions. [2021-11-13 18:09:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:09:52,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-11-13 18:09:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:52,435 INFO L225 Difference]: With dead ends: 2587 [2021-11-13 18:09:52,435 INFO L226 Difference]: Without dead ends: 1520 [2021-11-13 18:09:52,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:09:52,452 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 910 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4593.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.48ms SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5147.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:52,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 3404 Invalid, 1163 Unknown, 0 Unchecked, 45.48ms Time], IncrementalHoareTripleChecker [325 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 5147.55ms Time] [2021-11-13 18:09:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-13 18:09:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1462. [2021-11-13 18:09:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1098 states have (on average 1.3852459016393444) internal successors, (1521), 1110 states have internal predecessors, (1521), 286 states have call successors, (286), 78 states have call predecessors, (286), 77 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2021-11-13 18:09:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-11-13 18:09:52,645 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-11-13 18:09:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:52,645 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-11-13 18:09:52,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:09:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-11-13 18:09:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:09:52,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:52,658 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:09:52,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:09:52,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-11-13 18:09:52,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:52,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697843222] [2021-11-13 18:09:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:52,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:09:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:09:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:09:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:09:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:09:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:09:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:09:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:09:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:09:53,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:53,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697843222] [2021-11-13 18:09:53,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697843222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:53,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:53,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:09:53,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985603670] [2021-11-13 18:09:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:53,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:09:53,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:09:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:09:53,433 INFO L87 Difference]: Start difference. First operand 1462 states and 2092 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:09:55,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:57,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:59,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:01,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:10,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:13,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:15,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:17,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:20,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:21,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:23,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:25,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:10:26,917 INFO L93 Difference]: Finished difference Result 3431 states and 5003 transitions. [2021-11-13 18:10:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:10:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2021-11-13 18:10:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:10:26,942 INFO L225 Difference]: With dead ends: 3431 [2021-11-13 18:10:26,943 INFO L226 Difference]: Without dead ends: 1978 [2021-11-13 18:10:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:10:26,952 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 606 mSDsluCounter, 6861 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 242 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31254.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 8609 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.47ms SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33082.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:10:26,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 8609 Invalid, 4365 Unknown, 0 Unchecked, 68.47ms Time], IncrementalHoareTripleChecker [242 Valid, 4114 Invalid, 9 Unknown, 0 Unchecked, 33082.47ms Time] [2021-11-13 18:10:26,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-11-13 18:10:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1468. [2021-11-13 18:10:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-11-13 18:10:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-11-13 18:10:27,070 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 116 [2021-11-13 18:10:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:10:27,072 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-11-13 18:10:27,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:10:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-11-13 18:10:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 18:10:27,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:10:27,081 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:10:27,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:10:27,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:10:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:10:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-11-13 18:10:27,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:10:27,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862939193] [2021-11-13 18:10:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:10:27,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:10:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:10:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:10:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:10:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:10:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:10:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:10:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:10:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:10:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:10:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:10:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:10:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:10:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:10:27,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:10:27,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862939193] [2021-11-13 18:10:27,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862939193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:10:27,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:10:27,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:10:27,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416256149] [2021-11-13 18:10:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:10:27,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:10:27,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:10:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:10:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:10:27,704 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:10:29,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:31,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:33,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:35,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:37,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:40,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:41,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:51,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:55,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:57,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:59,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:00,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:02,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:03,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:05,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:07,209 INFO L93 Difference]: Finished difference Result 3446 states and 5028 transitions. [2021-11-13 18:11:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:11:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-13 18:11:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:07,227 INFO L225 Difference]: With dead ends: 3446 [2021-11-13 18:11:07,228 INFO L226 Difference]: Without dead ends: 1987 [2021-11-13 18:11:07,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:11:07,237 INFO L933 BasicCegarLoop]: 1713 mSDtfsCounter, 655 mSDsluCounter, 9231 mSDsCounter, 0 mSdLazyCounter, 5432 mSolverCounterSat, 370 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36637.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 10944 SdHoareTripleChecker+Invalid, 5812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.60ms SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5432 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39074.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:07,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 10944 Invalid, 5812 Unknown, 0 Unchecked, 62.60ms Time], IncrementalHoareTripleChecker [370 Valid, 5432 Invalid, 10 Unknown, 0 Unchecked, 39074.10ms Time] [2021-11-13 18:11:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-13 18:11:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1468. [2021-11-13 18:11:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-11-13 18:11:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-11-13 18:11:07,322 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 117 [2021-11-13 18:11:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:07,323 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-11-13 18:11:07,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:11:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-11-13 18:11:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 18:11:07,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:07,330 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:07,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:11:07,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:11:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1025870257, now seen corresponding path program 1 times [2021-11-13 18:11:07,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:07,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731738655] [2021-11-13 18:11:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:07,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:11:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:11:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:11:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:11:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:11:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:11:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:11:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:11:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:11:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:11:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:11:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:11:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:11:07,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:07,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731738655] [2021-11-13 18:11:07,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731738655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:07,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:07,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:11:07,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652372080] [2021-11-13 18:11:07,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:11:07,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:11:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:11:07,805 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:11:09,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:11,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:14,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:16,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:18,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:29,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:30,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:32,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:33,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:34,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:37,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:39,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:42,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:44,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:44,568 INFO L93 Difference]: Finished difference Result 4491 states and 6700 transitions. [2021-11-13 18:11:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:11:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-11-13 18:11:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:44,595 INFO L225 Difference]: With dead ends: 4491 [2021-11-13 18:11:44,595 INFO L226 Difference]: Without dead ends: 3032 [2021-11-13 18:11:44,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:11:44,604 INFO L933 BasicCegarLoop]: 2552 mSDtfsCounter, 1227 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 5916 mSolverCounterSat, 360 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34003.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 14747 SdHoareTripleChecker+Invalid, 6282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.93ms SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 5916 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36335.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:44,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 14747 Invalid, 6282 Unknown, 0 Unchecked, 60.93ms Time], IncrementalHoareTripleChecker [360 Valid, 5916 Invalid, 6 Unknown, 0 Unchecked, 36335.87ms Time] [2021-11-13 18:11:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-13 18:11:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1475. [2021-11-13 18:11:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1109 states have (on average 1.3832281334535617) internal successors, (1534), 1121 states have internal predecessors, (1534), 286 states have call successors, (286), 78 states have call predecessors, (286), 79 states have return successors, (291), 286 states have call predecessors, (291), 285 states have call successors, (291) [2021-11-13 18:11:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2111 transitions. [2021-11-13 18:11:44,749 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2111 transitions. Word has length 117 [2021-11-13 18:11:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:44,749 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2111 transitions. [2021-11-13 18:11:44,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:11:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2111 transitions. [2021-11-13 18:11:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:11:44,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:44,755 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:44,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:11:44,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:11:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1266672241, now seen corresponding path program 1 times [2021-11-13 18:11:44,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:44,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256787970] [2021-11-13 18:11:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:44,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:11:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:11:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:11:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:11:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:11:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:11:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:11:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:11:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:11:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:11:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:11:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:11:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:11:45,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:45,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256787970] [2021-11-13 18:11:45,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256787970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:45,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:45,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:11:45,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982265468] [2021-11-13 18:11:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:45,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:11:45,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:11:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:11:45,316 INFO L87 Difference]: Start difference. First operand 1475 states and 2111 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:11:47,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:49,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:51,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:53,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:56,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:11:58,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:00,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:12,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:14,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:18,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:20,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:21,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:22,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:23,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:24,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:26,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:30,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:31,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:34,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:36,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:37,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:12:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:38,200 INFO L93 Difference]: Finished difference Result 4527 states and 6764 transitions. [2021-11-13 18:12:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:12:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2021-11-13 18:12:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:38,226 INFO L225 Difference]: With dead ends: 4527 [2021-11-13 18:12:38,226 INFO L226 Difference]: Without dead ends: 3061 [2021-11-13 18:12:38,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:12:38,235 INFO L933 BasicCegarLoop]: 2617 mSDtfsCounter, 1209 mSDsluCounter, 16445 mSDsCounter, 0 mSdLazyCounter, 7948 mSolverCounterSat, 499 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48971.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 19062 SdHoareTripleChecker+Invalid, 8457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.20ms SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 7948 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52369.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:38,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 19062 Invalid, 8457 Unknown, 0 Unchecked, 66.20ms Time], IncrementalHoareTripleChecker [499 Valid, 7948 Invalid, 10 Unknown, 0 Unchecked, 52369.23ms Time] [2021-11-13 18:12:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2021-11-13 18:12:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1481. [2021-11-13 18:12:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1114 states have (on average 1.3833034111310591) internal successors, (1541), 1126 states have internal predecessors, (1541), 286 states have call successors, (286), 78 states have call predecessors, (286), 80 states have return successors, (294), 287 states have call predecessors, (294), 285 states have call successors, (294) [2021-11-13 18:12:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2121 transitions. [2021-11-13 18:12:38,332 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2121 transitions. Word has length 118 [2021-11-13 18:12:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:38,333 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 2121 transitions. [2021-11-13 18:12:38,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 18:12:38,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2121 transitions. [2021-11-13 18:12:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 18:12:38,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:38,341 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:38,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:12:38,341 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:12:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2033015333, now seen corresponding path program 1 times [2021-11-13 18:12:38,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:12:38,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851417438] [2021-11-13 18:12:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:38,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:12:38,818 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:12:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:12:39,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:12:39,744 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:12:39,745 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:12:39,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:12:39,752 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-13 18:12:39,756 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:12:39,982 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:12:39,990 INFO L158 Benchmark]: Toolchain (without parser) took 185302.33ms. Allocated memory was 109.1MB in the beginning and 595.6MB in the end (delta: 486.5MB). Free memory was 65.6MB in the beginning and 336.3MB in the end (delta: -270.7MB). Peak memory consumption was 388.6MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,990 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 22.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:12:39,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1949.36ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 65.6MB in the beginning and 100.6MB in the end (delta: -35.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 226.10ms. Allocated memory is still 155.2MB. Free memory was 100.6MB in the beginning and 83.9MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,992 INFO L158 Benchmark]: Boogie Preprocessor took 233.59ms. Allocated memory is still 155.2MB. Free memory was 83.9MB in the beginning and 96.5MB in the end (delta: -12.7MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,993 INFO L158 Benchmark]: RCFGBuilder took 8712.95ms. Allocated memory was 155.2MB in the beginning and 455.1MB in the end (delta: 299.9MB). Free memory was 96.5MB in the beginning and 376.2MB in the end (delta: -279.7MB). Peak memory consumption was 284.0MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,993 INFO L158 Benchmark]: TraceAbstraction took 174174.09ms. Allocated memory was 455.1MB in the beginning and 595.6MB in the end (delta: 140.5MB). Free memory was 376.2MB in the beginning and 336.3MB in the end (delta: 40.0MB). Peak memory consumption was 352.5MB. Max. memory is 16.1GB. [2021-11-13 18:12:39,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 22.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1949.36ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 65.6MB in the beginning and 100.6MB in the end (delta: -35.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 226.10ms. Allocated memory is still 155.2MB. Free memory was 100.6MB in the beginning and 83.9MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 233.59ms. Allocated memory is still 155.2MB. Free memory was 83.9MB in the beginning and 96.5MB in the end (delta: -12.7MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * RCFGBuilder took 8712.95ms. Allocated memory was 155.2MB in the beginning and 455.1MB in the end (delta: 299.9MB). Free memory was 96.5MB in the beginning and 376.2MB in the end (delta: -279.7MB). Peak memory consumption was 284.0MB. Max. memory is 16.1GB. * TraceAbstraction took 174174.09ms. Allocated memory was 455.1MB in the beginning and 595.6MB in the end (delta: 140.5MB). Free memory was 376.2MB in the beginning and 336.3MB in the end (delta: 40.0MB). Peak memory consumption was 352.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:12:40,240 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-13 18:12:40,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:12:42,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:12:42,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:12:42,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:12:42,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:12:42,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:12:42,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:12:42,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:12:42,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:12:42,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:12:42,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:12:42,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:12:42,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:12:42,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:12:42,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:12:42,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:12:42,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:12:42,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:12:42,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:12:42,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:12:42,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:12:42,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:12:42,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:12:42,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:12:42,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:12:42,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:12:42,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:12:42,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:12:42,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:12:42,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:12:42,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:12:42,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:12:42,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:12:42,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:12:42,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:12:42,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:12:42,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:12:42,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:12:42,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:12:42,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:12:42,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:12:42,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 18:12:42,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:12:42,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:12:42,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:12:42,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:12:42,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:12:42,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:12:42,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:12:42,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:12:42,732 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:12:42,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:12:42,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:12:42,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:12:42,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:12:42,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:12:42,734 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:12:42,734 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:12:42,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:12:42,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:12:42,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:12:42,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:12:42,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:12:42,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:12:42,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:12:42,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:12:42,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:12:42,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:12:42,738 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:12:42,738 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:12:42,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:12:42,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:12:42,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:12:42,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:12:42,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:12:42,739 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-11-13 18:12:43,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:12:43,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:12:43,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:12:43,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:12:43,148 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:12:43,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:12:43,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/d941c6dc0/0f7e75bf74394d6a9d7ea4b0c62d4071/FLAGa62f1bed8 [2021-11-13 18:12:44,082 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:12:44,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:12:44,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/d941c6dc0/0f7e75bf74394d6a9d7ea4b0c62d4071/FLAGa62f1bed8 [2021-11-13 18:12:44,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/data/d941c6dc0/0f7e75bf74394d6a9d7ea4b0c62d4071 [2021-11-13 18:12:44,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:12:44,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:12:44,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:12:44,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:12:44,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:12:44,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:12:44" (1/1) ... [2021-11-13 18:12:44,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4b5c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:44, skipping insertion in model container [2021-11-13 18:12:44,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:12:44" (1/1) ... [2021-11-13 18:12:44,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:12:44,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:12:45,393 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-11-13 18:12:45,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:12:46,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:12:46,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-11-13 18:12:46,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:12:46,491 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:12:46,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46 WrapperNode [2021-11-13 18:12:46,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:12:46,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:12:46,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:12:46,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:12:46,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:12:46,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:12:46,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:12:46,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:12:46,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:12:46,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:12:46,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:12:46,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:12:46,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (1/1) ... [2021-11-13 18:12:46,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:12:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:12:47,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:12:47,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:12:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-11-13 18:12:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-11-13 18:12:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:12:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 18:12:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:12:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:12:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 18:12:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:12:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:12:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:12:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-11-13 18:12:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-11-13 18:12:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-11-13 18:12:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-11-13 18:12:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-11-13 18:12:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-11-13 18:12:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-11-13 18:12:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-11-13 18:12:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:12:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:12:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-13 18:12:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-13 18:12:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:12:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:12:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-11-13 18:12:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-11-13 18:12:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-11-13 18:12:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-11-13 18:12:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-11-13 18:12:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-11-13 18:12:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:12:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:12:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 18:12:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 18:12:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-11-13 18:12:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-11-13 18:12:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:12:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:12:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 18:12:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 18:12:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:12:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:12:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 18:12:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 18:12:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 18:12:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-11-13 18:12:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-11-13 18:12:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 18:12:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 18:12:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 18:12:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:12:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:12:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-11-13 18:12:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-11-13 18:12:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-11-13 18:12:47,064 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-11-13 18:12:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-11-13 18:12:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-11-13 18:12:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:12:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:12:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:12:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-11-13 18:12:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-11-13 18:12:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-11-13 18:12:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-11-13 18:12:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-11-13 18:12:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-11-13 18:12:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-11-13 18:12:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-11-13 18:12:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:12:47,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:12:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:12:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-11-13 18:12:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-11-13 18:12:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:12:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 18:12:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-11-13 18:12:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-11-13 18:12:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 18:12:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:12:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:12:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-11-13 18:12:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-11-13 18:12:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-11-13 18:12:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-11-13 18:12:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 18:12:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-11-13 18:12:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-11-13 18:12:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-11-13 18:12:47,073 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-11-13 18:12:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:12:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 18:12:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 18:12:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:12:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 18:12:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:12:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:12:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:12:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-11-13 18:12:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-11-13 18:12:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 18:12:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 18:12:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-11-13 18:12:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-11-13 18:12:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:12:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-11-13 18:12:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-11-13 18:12:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:12:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 18:12:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:12:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:12:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 18:12:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 18:12:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 18:12:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-11-13 18:12:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-11-13 18:12:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-11-13 18:12:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-11-13 18:12:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-11-13 18:12:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-11-13 18:12:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-11-13 18:12:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-11-13 18:12:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-11-13 18:12:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-11-13 18:12:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-11-13 18:12:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-11-13 18:12:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:12:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:12:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:12:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:12:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:12:48,119 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:13:12,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:13:12,381 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:13:12,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:12 BoogieIcfgContainer [2021-11-13 18:13:12,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:13:12,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:13:12,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:13:12,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:13:12,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:12:44" (1/3) ... [2021-11-13 18:13:12,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b7f14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:13:12, skipping insertion in model container [2021-11-13 18:13:12,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:46" (2/3) ... [2021-11-13 18:13:12,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b7f14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:13:12, skipping insertion in model container [2021-11-13 18:13:12,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:12" (3/3) ... [2021-11-13 18:13:12,393 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-11-13 18:13:12,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:13:12,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:13:12,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:13:12,458 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:13:12,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:13:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-11-13 18:13:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:13:12,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:12,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:12,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-11-13 18:13:12,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:13:12,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325158471] [2021-11-13 18:13:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:12,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:13:12,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:13:12,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:13:12,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:13:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:13:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:13:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:13:14,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:13:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:13:14,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:13:14,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325158471] [2021-11-13 18:13:14,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325158471] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:14,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:14,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:13:14,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712483740] [2021-11-13 18:13:14,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:14,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:13:14,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:13:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:13:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:13:14,339 INFO L87 Difference]: Start difference. First operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:13:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:14,775 INFO L93 Difference]: Finished difference Result 2531 states and 3685 transitions. [2021-11-13 18:13:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:13:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2021-11-13 18:13:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:14,810 INFO L225 Difference]: With dead ends: 2531 [2021-11-13 18:13:14,811 INFO L226 Difference]: Without dead ends: 1464 [2021-11-13 18:13:14,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:13:14,826 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 641 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:14,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 3054 Invalid, 23 Unknown, 0 Unchecked, 25.51ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 257.01ms Time] [2021-11-13 18:13:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-11-13 18:13:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1462. [2021-11-13 18:13:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1098 states have (on average 1.3852459016393444) internal successors, (1521), 1110 states have internal predecessors, (1521), 286 states have call successors, (286), 78 states have call predecessors, (286), 77 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2021-11-13 18:13:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-11-13 18:13:14,980 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-11-13 18:13:14,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:14,980 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-11-13 18:13:14,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:13:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-11-13 18:13:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:13:14,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:14,993 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:13:15,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:13:15,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:13:15,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-11-13 18:13:15,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:13:15,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840424656] [2021-11-13 18:13:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:15,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:13:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:13:15,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:13:15,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:13:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:16,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 18:13:16,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:13:17,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:13:17,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:13:17,243 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:13:17,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:13:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:13:24,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:13:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:13:25,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:13:25,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840424656] [2021-11-13 18:13:25,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840424656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:25,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:25,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2021-11-13 18:13:25,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137200847] [2021-11-13 18:13:25,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:25,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:13:25,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:13:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:13:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-11-13 18:13:25,749 INFO L87 Difference]: Start difference. First operand 1462 states and 2092 transitions. Second operand has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:13:27,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:29,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:31,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:37,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:42,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:47,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:49,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:51,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:55,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:57,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:59,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:12,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:14,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:16,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:18,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:20,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:22,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:24,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:26,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:27,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:14:29,878 INFO L93 Difference]: Finished difference Result 2933 states and 4195 transitions. [2021-11-13 18:14:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:14:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 116 [2021-11-13 18:14:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:14:29,894 INFO L225 Difference]: With dead ends: 2933 [2021-11-13 18:14:29,894 INFO L226 Difference]: Without dead ends: 1472 [2021-11-13 18:14:29,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2021-11-13 18:14:29,903 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 11 mSDsluCounter, 10009 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 4 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61127.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11488 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.96ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 508 IncrementalHoareTripleChecker+Unchecked, 63627.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:14:29,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 11488 Invalid, 1441 Unknown, 0 Unchecked, 42.96ms Time], IncrementalHoareTripleChecker [4 Valid, 915 Invalid, 14 Unknown, 508 Unchecked, 63627.72ms Time] [2021-11-13 18:14:29,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-11-13 18:14:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1470. [2021-11-13 18:14:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1104 states have (on average 1.3831521739130435) internal successors, (1527), 1117 states have internal predecessors, (1527), 287 states have call successors, (287), 79 states have call predecessors, (287), 78 states have return successors, (289), 284 states have call predecessors, (289), 286 states have call successors, (289) [2021-11-13 18:14:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2103 transitions. [2021-11-13 18:14:29,979 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2103 transitions. Word has length 116 [2021-11-13 18:14:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:14:29,980 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 2103 transitions. [2021-11-13 18:14:29,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:14:29,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2103 transitions. [2021-11-13 18:14:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:14:29,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:14:29,988 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:30,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:14:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:14:30,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:14:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1422857369, now seen corresponding path program 1 times [2021-11-13 18:14:30,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:14:30,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484012726] [2021-11-13 18:14:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:30,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:14:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:14:30,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:14:30,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:14:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:31,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 18:14:31,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:14:32,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:14:32,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:14:32,199 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:14:32,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:14:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:14:33,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:14:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:14:35,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:14:35,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484012726] [2021-11-13 18:14:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484012726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:35,435 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:35,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 16 [2021-11-13 18:14:35,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529021969] [2021-11-13 18:14:35,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:35,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:14:35,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:14:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:14:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:14:35,437 INFO L87 Difference]: Start difference. First operand 1470 states and 2103 transitions. Second operand has 16 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:14:37,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:39,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:42,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:44,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:46,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:48,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:14:59,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:01,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:05,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:07,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:23,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:25,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:27,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:28,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:31,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:15:35,229 INFO L93 Difference]: Finished difference Result 2943 states and 4206 transitions. [2021-11-13 18:15:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:15:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 116 [2021-11-13 18:15:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:15:35,249 INFO L225 Difference]: With dead ends: 2943 [2021-11-13 18:15:35,249 INFO L226 Difference]: Without dead ends: 1474 [2021-11-13 18:15:35,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:15:35,258 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 26 mSDsluCounter, 7462 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 14 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56214.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8936 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.39ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 59004.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:15:35,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 8936 Invalid, 1265 Unknown, 0 Unchecked, 23.39ms Time], IncrementalHoareTripleChecker [14 Valid, 998 Invalid, 12 Unknown, 241 Unchecked, 59004.47ms Time] [2021-11-13 18:15:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-13 18:15:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1469. [2021-11-13 18:15:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1104 states have (on average 1.3831521739130435) internal successors, (1527), 1116 states have internal predecessors, (1527), 286 states have call successors, (286), 79 states have call predecessors, (286), 78 states have return successors, (287), 284 states have call predecessors, (287), 285 states have call successors, (287) [2021-11-13 18:15:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2100 transitions. [2021-11-13 18:15:35,325 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2100 transitions. Word has length 116 [2021-11-13 18:15:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:15:35,326 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 2100 transitions. [2021-11-13 18:15:35,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:15:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2100 transitions. [2021-11-13 18:15:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 18:15:35,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:15:35,333 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:15:35,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:15:35,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:15:35,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:15:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:15:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-11-13 18:15:35,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:15:35,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236930244] [2021-11-13 18:15:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:15:35,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:15:35,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:15:35,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:15:35,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:15:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:15:36,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 18:15:36,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:15:37,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:15:37,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:15:37,515 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:15:37,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:15:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:15:43,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:15:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:15:46,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:15:46,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236930244] [2021-11-13 18:15:46,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236930244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:15:46,365 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:15:46,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 16 [2021-11-13 18:15:46,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590488595] [2021-11-13 18:15:46,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:15:46,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:15:46,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:15:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:15:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:15:46,368 INFO L87 Difference]: Start difference. First operand 1469 states and 2100 transitions. Second operand has 16 states, 14 states have (on average 5.285714285714286) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:15:48,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:50,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:52,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:15:56,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:09,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:11,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:13,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:17,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:19,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:21,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:36,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:38,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:40,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:42,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:44,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:46,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:48,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:53,278 INFO L93 Difference]: Finished difference Result 2946 states and 4209 transitions. [2021-11-13 18:16:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:16:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.285714285714286) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 117 [2021-11-13 18:16:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:53,296 INFO L225 Difference]: With dead ends: 2946 [2021-11-13 18:16:53,297 INFO L226 Difference]: Without dead ends: 1478 [2021-11-13 18:16:53,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:16:53,306 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 18 mSDsluCounter, 7510 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 10 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62706.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8988 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.86ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 65569.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:53,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8988 Invalid, 1455 Unknown, 0 Unchecked, 19.86ms Time], IncrementalHoareTripleChecker [10 Valid, 954 Invalid, 15 Unknown, 476 Unchecked, 65569.72ms Time] [2021-11-13 18:16:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-11-13 18:16:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1476. [2021-11-13 18:16:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1109 states have (on average 1.381424706943192) internal successors, (1532), 1122 states have internal predecessors, (1532), 287 states have call successors, (287), 80 states have call predecessors, (287), 79 states have return successors, (291), 284 states have call predecessors, (291), 286 states have call successors, (291) [2021-11-13 18:16:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2110 transitions. [2021-11-13 18:16:53,383 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2110 transitions. Word has length 117 [2021-11-13 18:16:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:53,383 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2110 transitions. [2021-11-13 18:16:53,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.285714285714286) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:16:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2110 transitions. [2021-11-13 18:16:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 18:16:53,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:53,393 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:16:53,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 18:16:53,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:16:53,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -880176747, now seen corresponding path program 1 times [2021-11-13 18:16:53,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:16:53,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065298692] [2021-11-13 18:16:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:53,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:16:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:16:53,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:16:53,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:16:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:16:54,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:16:55,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:16:55,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:16:55,639 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:16:55,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:16:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:16:59,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:17:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:17:03,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:17:03,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065298692] [2021-11-13 18:17:03,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065298692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:03,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:03,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 18 [2021-11-13 18:17:03,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364874137] [2021-11-13 18:17:03,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:03,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:17:03,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:17:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:17:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:17:03,412 INFO L87 Difference]: Start difference. First operand 1476 states and 2110 transitions. Second operand has 18 states, 16 states have (on average 4.625) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:17:05,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:07,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:09,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:11,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:15,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:16,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:17,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:19,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:22,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:32,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:34,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:36,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:38,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:40,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:42,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:44,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:50,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:52,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:54,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:17:56,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:14,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:16,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:18,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:20,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:22,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:24,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:27,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:29,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:32,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:33,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:35,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:39,515 INFO L93 Difference]: Finished difference Result 2977 states and 4258 transitions. [2021-11-13 18:18:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:18:39,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.625) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 117 [2021-11-13 18:18:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:39,532 INFO L225 Difference]: With dead ends: 2977 [2021-11-13 18:18:39,532 INFO L226 Difference]: Without dead ends: 1502 [2021-11-13 18:18:39,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:18:39,541 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 59 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 26 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90951.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 10156 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.13ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 94493.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:39,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 10156 Invalid, 1875 Unknown, 0 Unchecked, 21.13ms Time], IncrementalHoareTripleChecker [26 Valid, 1291 Invalid, 22 Unknown, 536 Unchecked, 94493.70ms Time] [2021-11-13 18:18:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-13 18:18:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1470. [2021-11-13 18:18:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1105 states have (on average 1.3828054298642534) internal successors, (1528), 1117 states have internal predecessors, (1528), 286 states have call successors, (286), 79 states have call predecessors, (286), 78 states have return successors, (287), 284 states have call predecessors, (287), 285 states have call successors, (287) [2021-11-13 18:18:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2101 transitions. [2021-11-13 18:18:39,602 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2101 transitions. Word has length 117 [2021-11-13 18:18:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:39,603 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 2101 transitions. [2021-11-13 18:18:39,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.625) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:18:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2101 transitions. [2021-11-13 18:18:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:18:39,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:39,611 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:39,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:39,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:39,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1187863646, now seen corresponding path program 1 times [2021-11-13 18:18:39,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:39,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519914333] [2021-11-13 18:18:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:39,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:39,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:39,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:18:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:40,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:18:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:41,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:18:41,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:18:41,571 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:18:41,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:18:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:18:50,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:18:54,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519914333] [2021-11-13 18:18:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519914333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:54,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:54,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 18 [2021-11-13 18:18:54,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869051474] [2021-11-13 18:18:54,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:54,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:18:54,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:18:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=243, Unknown=1, NotChecked=0, Total=306 [2021-11-13 18:18:54,613 INFO L87 Difference]: Start difference. First operand 1470 states and 2101 transitions. Second operand has 18 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:18:56,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:18:58,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:01,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:15,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:17,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:21,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:23,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:36,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:38,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:40,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:42,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:44,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:47,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:50,743 INFO L93 Difference]: Finished difference Result 2952 states and 4216 transitions. [2021-11-13 18:19:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:19:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2021-11-13 18:19:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:50,758 INFO L225 Difference]: With dead ends: 2952 [2021-11-13 18:19:50,758 INFO L226 Difference]: Without dead ends: 1483 [2021-11-13 18:19:50,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2021-11-13 18:19:50,766 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 27 mSDsluCounter, 13756 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51797.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 15234 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 1021 IncrementalHoareTripleChecker+Unchecked, 54506.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:50,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 15234 Invalid, 1980 Unknown, 0 Unchecked, 20.96ms Time], IncrementalHoareTripleChecker [3 Valid, 945 Invalid, 11 Unknown, 1021 Unchecked, 54506.05ms Time] [2021-11-13 18:19:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-11-13 18:19:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1478. [2021-11-13 18:19:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1111 states have (on average 1.3807380738073807) internal successors, (1534), 1124 states have internal predecessors, (1534), 287 states have call successors, (287), 80 states have call predecessors, (287), 79 states have return successors, (291), 284 states have call predecessors, (291), 286 states have call successors, (291) [2021-11-13 18:19:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2112 transitions. [2021-11-13 18:19:50,826 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2112 transitions. Word has length 118 [2021-11-13 18:19:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:50,826 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 2112 transitions. [2021-11-13 18:19:50,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:19:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2112 transitions. [2021-11-13 18:19:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:19:50,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:50,834 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:50,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:51,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:51,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1183875616, now seen corresponding path program 1 times [2021-11-13 18:19:51,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:51,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120854187] [2021-11-13 18:19:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:51,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:51,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:51,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:51,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:19:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:52,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 18:19:52,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:52,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:19:52,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:19:52,946 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:19:52,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:19:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:19:59,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:20:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:20:03,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:20:03,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120854187] [2021-11-13 18:20:03,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120854187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:20:03,495 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:20:03,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2021-11-13 18:20:03,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756592756] [2021-11-13 18:20:03,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:20:03,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:20:03,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:20:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:20:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:20:03,498 INFO L87 Difference]: Start difference. First operand 1478 states and 2112 transitions. Second operand has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:20:05,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:07,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:09,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:11,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:13,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:21,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:39,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:41,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:43,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:45,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:47,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:52,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:55,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:57,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:20:59,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:01,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:23,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:25,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:27,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:29,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:31,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:33,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:35,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:37,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:39,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:41,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:43,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:45,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:46,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:48,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:50,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:21:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:56,252 INFO L93 Difference]: Finished difference Result 2981 states and 4262 transitions. [2021-11-13 18:21:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:21:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2021-11-13 18:21:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:56,268 INFO L225 Difference]: With dead ends: 2981 [2021-11-13 18:21:56,268 INFO L226 Difference]: Without dead ends: 1504 [2021-11-13 18:21:56,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:21:56,276 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 60 mSDsluCounter, 9818 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 24 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106695.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 11285 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 111102.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:56,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 11285 Invalid, 2198 Unknown, 0 Unchecked, 21.90ms Time], IncrementalHoareTripleChecker [24 Valid, 1830 Invalid, 26 Unknown, 318 Unchecked, 111102.50ms Time] [2021-11-13 18:21:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-11-13 18:21:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1471. [2021-11-13 18:21:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1106 states have (on average 1.3824593128390597) internal successors, (1529), 1118 states have internal predecessors, (1529), 286 states have call successors, (286), 79 states have call predecessors, (286), 78 states have return successors, (287), 284 states have call predecessors, (287), 285 states have call successors, (287) [2021-11-13 18:21:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2102 transitions. [2021-11-13 18:21:56,389 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2102 transitions. Word has length 118 [2021-11-13 18:21:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:56,389 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 2102 transitions. [2021-11-13 18:21:56,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 19 states have internal predecessors, (76), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:21:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2102 transitions. [2021-11-13 18:21:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 18:21:56,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:56,398 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:56,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:21:56,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:21:56,620 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash 871749118, now seen corresponding path program 1 times [2021-11-13 18:21:56,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:21:56,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570770344] [2021-11-13 18:21:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:56,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:21:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:21:56,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:21:56,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a891f2-61fc-4035-8543-8a20ecd2a88d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:21:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 18:21:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:58,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-13 18:21:58,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-13 18:21:58,269 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-13 18:21:58,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-11-13 18:22:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:22:02,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-13 18:22:07,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:07,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570770344] [2021-11-13 18:22:07,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570770344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:07,450 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:07,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2021-11-13 18:22:07,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595242881] [2021-11-13 18:22:07,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:07,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:22:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:22:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:22:07,453 INFO L87 Difference]: Start difference. First operand 1471 states and 2102 transitions. Second operand has 20 states, 18 states have (on average 4.333333333333333) internal successors, (78), 19 states have internal predecessors, (78), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:22:09,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:11,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:13,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:15,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:22,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:25,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:33,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:43,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:45,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:47,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:49,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:56,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:58,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:00,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []