./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fb7e842c9cc7c34f1770862f1d9d5e094000777 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fb7e842c9cc7c34f1770862f1d9d5e094000777 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:25:44,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:44,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:44,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:44,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:44,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:44,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:44,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:44,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:44,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:44,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:44,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:44,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:44,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:44,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:44,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:44,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:44,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:44,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:44,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:44,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:44,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:44,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:44,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:44,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:44,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:44,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:44,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:44,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:44,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:44,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:44,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:44,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:44,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:44,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:44,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:44,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:44,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:44,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:44,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:44,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:44,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:25:44,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:44,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:44,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:44,814 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:44,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:44,815 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:44,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:25:44,815 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:44,822 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:44,822 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:25:44,823 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:25:44,823 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:44,823 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:25:44,824 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:25:44,824 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:25:44,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:44,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:44,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:25:44,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:44,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:44,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:44,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:44,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:44,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:44,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:44,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:44,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:44,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:44,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:44,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:44,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:44,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:44,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:44,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:44,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:25:44,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:25:44,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:44,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:44,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:44,833 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fb7e842c9cc7c34f1770862f1d9d5e094000777 [2021-10-13 07:25:45,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:45,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:45,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:45,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:45,103 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:45,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c [2021-10-13 07:25:45,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/63145db6e/41aaedacb2524b7fbb0265d764fb6144/FLAGffe6a1d34 [2021-10-13 07:25:45,657 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:45,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c [2021-10-13 07:25:45,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/63145db6e/41aaedacb2524b7fbb0265d764fb6144/FLAGffe6a1d34 [2021-10-13 07:25:46,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/63145db6e/41aaedacb2524b7fbb0265d764fb6144 [2021-10-13 07:25:46,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:46,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:46,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:46,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:46,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:46,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4765a95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46, skipping insertion in model container [2021-10-13 07:25:46,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:46,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:46,366 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c[37065,37078] [2021-10-13 07:25:46,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:46,394 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:46,463 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c[37065,37078] [2021-10-13 07:25:46,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:46,482 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:46,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46 WrapperNode [2021-10-13 07:25:46,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:46,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:46,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:46,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:46,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:46,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:46,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:46,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:46,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:46,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:46,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:46,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:46,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (1/1) ... [2021-10-13 07:25:46,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:46,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:46,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:46,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:25:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:46,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:46,909 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:25:47,475 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:25:47,476 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:25:47,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:47,978 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:25:47,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:47 BoogieIcfgContainer [2021-10-13 07:25:47,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:48,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:48,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:48,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:48,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:46" (1/3) ... [2021-10-13 07:25:48,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52dde3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:48, skipping insertion in model container [2021-10-13 07:25:48,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:46" (2/3) ... [2021-10-13 07:25:48,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52dde3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:48, skipping insertion in model container [2021-10-13 07:25:48,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:47" (3/3) ... [2021-10-13 07:25:48,010 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-3.c [2021-10-13 07:25:48,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:48,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:48,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:48,096 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 07:25:48,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:25:48,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:48,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:48,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 536976521, now seen corresponding path program 1 times [2021-10-13 07:25:48,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:48,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184121891] [2021-10-13 07:25:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:48,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:48,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:48,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184121891] [2021-10-13 07:25:48,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184121891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:48,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:48,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:25:48,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481784298] [2021-10-13 07:25:48,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:48,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:48,372 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 84 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:48,570 INFO L93 Difference]: Finished difference Result 171 states and 295 transitions. [2021-10-13 07:25:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:25:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:48,583 INFO L225 Difference]: With dead ends: 171 [2021-10-13 07:25:48,584 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 07:25:48,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 07:25:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 07:25:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2021-10-13 07:25:48,640 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 19 [2021-10-13 07:25:48,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:48,641 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2021-10-13 07:25:48,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2021-10-13 07:25:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:25:48,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:48,645 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:25:48,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:25:48,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:48,649 INFO L82 PathProgramCache]: Analyzing trace with hash -568819917, now seen corresponding path program 1 times [2021-10-13 07:25:48,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:48,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139893314] [2021-10-13 07:25:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:48,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:48,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:48,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139893314] [2021-10-13 07:25:48,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139893314] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:48,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:48,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:25:48,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982826432] [2021-10-13 07:25:48,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:48,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:48,798 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:48,963 INFO L93 Difference]: Finished difference Result 180 states and 263 transitions. [2021-10-13 07:25:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 07:25:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:48,965 INFO L225 Difference]: With dead ends: 180 [2021-10-13 07:25:48,965 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 07:25:48,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 07:25:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-10-13 07:25:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 96 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2021-10-13 07:25:48,976 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 28 [2021-10-13 07:25:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:48,976 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2021-10-13 07:25:48,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2021-10-13 07:25:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:25:48,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:48,978 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:48,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:25:48,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 405657218, now seen corresponding path program 1 times [2021-10-13 07:25:48,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:48,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796731956] [2021-10-13 07:25:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:48,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:25:49,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796731956] [2021-10-13 07:25:49,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796731956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:49,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:49,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:25:49,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264994784] [2021-10-13 07:25:49,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:49,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:49,050 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:49,181 INFO L93 Difference]: Finished difference Result 208 states and 299 transitions. [2021-10-13 07:25:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:49,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 07:25:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:49,183 INFO L225 Difference]: With dead ends: 208 [2021-10-13 07:25:49,183 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 07:25:49,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 07:25:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-10-13 07:25:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 111 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2021-10-13 07:25:49,193 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 39 [2021-10-13 07:25:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:49,194 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2021-10-13 07:25:49,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2021-10-13 07:25:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 07:25:49,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:49,196 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:49,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:25:49,197 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1601091815, now seen corresponding path program 1 times [2021-10-13 07:25:49,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:49,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111192235] [2021-10-13 07:25:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:49,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:25:49,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:49,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111192235] [2021-10-13 07:25:49,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111192235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:25:49,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524149747] [2021-10-13 07:25:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:49,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:49,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:49,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:25:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:49,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:49,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:25:49,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:25:50,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524149747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:50,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:25:50,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-13 07:25:50,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619102101] [2021-10-13 07:25:50,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:25:50,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:25:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:50,027 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:50,378 INFO L93 Difference]: Finished difference Result 315 states and 470 transitions. [2021-10-13 07:25:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:25:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 07:25:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:50,383 INFO L225 Difference]: With dead ends: 315 [2021-10-13 07:25:50,384 INFO L226 Difference]: Without dead ends: 205 [2021-10-13 07:25:50,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-13 07:25:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2021-10-13 07:25:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 186 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 256 transitions. [2021-10-13 07:25:50,417 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 256 transitions. Word has length 52 [2021-10-13 07:25:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:50,417 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 256 transitions. [2021-10-13 07:25:50,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 256 transitions. [2021-10-13 07:25:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:25:50,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:50,427 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2021-10-13 07:25:50,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:50,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:50,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash 435527111, now seen corresponding path program 1 times [2021-10-13 07:25:50,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:50,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672758932] [2021-10-13 07:25:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:50,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:25:50,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:50,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672758932] [2021-10-13 07:25:50,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672758932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:50,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:50,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:25:50,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405369124] [2021-10-13 07:25:50,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:50,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:50,796 INFO L87 Difference]: Start difference. First operand 187 states and 256 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:50,906 INFO L93 Difference]: Finished difference Result 392 states and 545 transitions. [2021-10-13 07:25:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 07:25:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:50,915 INFO L225 Difference]: With dead ends: 392 [2021-10-13 07:25:50,915 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 07:25:50,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 07:25:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2021-10-13 07:25:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3560975609756099) internal successors, (278), 205 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2021-10-13 07:25:50,972 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 68 [2021-10-13 07:25:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:50,976 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2021-10-13 07:25:50,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2021-10-13 07:25:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 07:25:50,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:50,981 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-10-13 07:25:50,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:25:50,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1472315994, now seen corresponding path program 1 times [2021-10-13 07:25:50,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:50,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661715550] [2021-10-13 07:25:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:50,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 07:25:51,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:51,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661715550] [2021-10-13 07:25:51,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661715550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:25:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627086401] [2021-10-13 07:25:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:51,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:51,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:51,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:25:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:51,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:25:51,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-13 07:25:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-13 07:25:52,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627086401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:52,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1828437555] [2021-10-13 07:25:52,039 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-10-13 07:25:52,039 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:25:52,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:25:52,050 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:25:52,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:26:01,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:01,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:26:01,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:26:01,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:26:01,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-13 07:26:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:26:01,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,267 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:26:01,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:26:01,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,316 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:26:01,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:26:01,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:26:01,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:26:01,359 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:26:01,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:01,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:26:01,633 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-13 07:26:01,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1119 [2021-10-13 07:26:01,676 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:26:01,677 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1128, output treesize:1119 [2021-10-13 07:26:01,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:01,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:01,905 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) 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) [2021-10-13 07:26:01,910 INFO L168 Benchmark]: Toolchain (without parser) took 15899.45 ms. Allocated memory was 107.0 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 76.6 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 865.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,910 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 107.0 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:26:01,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.29 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 76.4 MB in the beginning and 130.1 MB in the end (delta: -53.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.89 ms. Allocated memory is still 159.4 MB. Free memory was 130.1 MB in the beginning and 127.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,912 INFO L168 Benchmark]: Boogie Preprocessor took 74.98 ms. Allocated memory is still 159.4 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,913 INFO L168 Benchmark]: RCFGBuilder took 1322.45 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 128.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,914 INFO L168 Benchmark]: TraceAbstraction took 13907.30 ms. Allocated memory was 159.4 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 127.6 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 865.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:26:01,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 107.0 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.29 ms. Allocated memory was 107.0 MB in the beginning and 159.4 MB in the end (delta: 52.4 MB). Free memory was 76.4 MB in the beginning and 130.1 MB in the end (delta: -53.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.89 ms. Allocated memory is still 159.4 MB. Free memory was 130.1 MB in the beginning and 127.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.98 ms. Allocated memory is still 159.4 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1322.45 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 128.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13907.30 ms. Allocated memory was 159.4 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 127.6 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 865.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:26:01,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:26:04,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:26:04,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:26:04,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:26:04,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:26:04,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:26:04,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:26:04,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:26:04,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:26:04,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:26:04,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:26:04,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:26:04,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:26:04,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:26:04,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:26:04,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:26:04,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:26:04,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:26:04,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:26:04,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:26:04,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:26:04,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:26:04,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:26:04,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:26:04,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:26:04,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:26:04,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:26:04,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:26:04,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:26:04,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:26:04,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:26:04,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:26:04,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:26:04,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:26:04,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:26:04,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:26:04,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:26:04,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:26:04,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:26:04,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:26:04,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:26:04,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:26:04,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:26:04,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:26:04,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:26:04,867 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:26:04,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:26:04,868 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:26:04,868 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:26:04,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:26:04,868 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:26:04,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:26:04,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:26:04,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:26:04,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:26:04,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:26:04,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:26:04,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:26:04,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:26:04,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:26:04,872 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:26:04,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:26:04,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:26:04,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:26:04,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:26:04,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:26:04,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:26:04,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:26:04,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:04,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:26:04,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:26:04,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:26:04,876 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:26:04,876 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:26:04,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:26:04,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:26:04,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:26:04,877 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fb7e842c9cc7c34f1770862f1d9d5e094000777 [2021-10-13 07:26:05,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:26:05,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:26:05,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:26:05,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:26:05,316 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:26:05,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c [2021-10-13 07:26:05,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/cba825bcd/942e2632685447389707bb14dc5702b6/FLAG85db8b1b8 [2021-10-13 07:26:06,006 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:26:06,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c [2021-10-13 07:26:06,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/cba825bcd/942e2632685447389707bb14dc5702b6/FLAG85db8b1b8 [2021-10-13 07:26:06,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/data/cba825bcd/942e2632685447389707bb14dc5702b6 [2021-10-13 07:26:06,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:26:06,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:26:06,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:06,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:26:06,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:26:06,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1838de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06, skipping insertion in model container [2021-10-13 07:26:06,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:26:06,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:26:06,601 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c[37065,37078] [2021-10-13 07:26:06,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:06,649 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:26:06,722 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_3a5e26fb-d9df-4760-b664-ac3b7c73bece/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-3.c[37065,37078] [2021-10-13 07:26:06,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:26:06,739 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:26:06,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06 WrapperNode [2021-10-13 07:26:06,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:26:06,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:06,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:26:06,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:26:06,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:26:06,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:26:06,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:26:06,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:26:06,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:26:06,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:26:06,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:26:06,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:26:06,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (1/1) ... [2021-10-13 07:26:06,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:26:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:06,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:26:06,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:26:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:26:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:26:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:26:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:26:07,113 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:26:07,733 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 07:26:07,733 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 07:26:07,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:26:07,751 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:26:07,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:07 BoogieIcfgContainer [2021-10-13 07:26:07,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:26:07,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:26:07,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:26:07,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:26:07,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:26:06" (1/3) ... [2021-10-13 07:26:07,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78efbd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:07, skipping insertion in model container [2021-10-13 07:26:07,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:26:06" (2/3) ... [2021-10-13 07:26:07,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78efbd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:26:07, skipping insertion in model container [2021-10-13 07:26:07,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:07" (3/3) ... [2021-10-13 07:26:07,773 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-3.c [2021-10-13 07:26:07,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:26:07,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:26:07,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:26:07,877 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 07:26:07,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:26:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:26:07,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:07,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:26:07,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:07,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-10-13 07:26:07,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:07,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452038014] [2021-10-13 07:26:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:07,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:07,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:08,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:26:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:26:08,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:08,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:08,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:08,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452038014] [2021-10-13 07:26:08,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452038014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:08,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:08,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:08,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645978265] [2021-10-13 07:26:08,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:08,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:08,514 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:08,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:08,725 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-10-13 07:26:08,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:08,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 07:26:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:08,739 INFO L225 Difference]: With dead ends: 252 [2021-10-13 07:26:08,752 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 07:26:08,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 07:26:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-13 07:26:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-10-13 07:26:08,810 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-10-13 07:26:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:08,811 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-10-13 07:26:08,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-10-13 07:26:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:26:08,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:08,814 INFO L512 BasicCegarLoop]: trace histogram [2, 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] [2021-10-13 07:26:08,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:09,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:09,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-10-13 07:26:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:09,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083718431] [2021-10-13 07:26:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:09,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:09,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:09,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:26:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:09,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:09,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:09,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:09,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:09,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083718431] [2021-10-13 07:26:09,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083718431] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:09,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:09,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:09,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580483189] [2021-10-13 07:26:09,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:09,456 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:09,650 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-10-13 07:26:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 07:26:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:09,660 INFO L225 Difference]: With dead ends: 238 [2021-10-13 07:26:09,660 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 07:26:09,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 07:26:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-10-13 07:26:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-10-13 07:26:09,697 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-10-13 07:26:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:09,698 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-10-13 07:26:09,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-10-13 07:26:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:26:09,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:09,703 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:09,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:09,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:09,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-10-13 07:26:09,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:09,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709978218] [2021-10-13 07:26:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:09,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:09,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:09,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:09,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:26:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:10,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:10,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:26:10,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:26:10,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:10,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709978218] [2021-10-13 07:26:10,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709978218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:10,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:10,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:10,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276844713] [2021-10-13 07:26:10,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:10,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:10,371 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:10,509 INFO L93 Difference]: Finished difference Result 272 states and 408 transitions. [2021-10-13 07:26:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 07:26:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:10,511 INFO L225 Difference]: With dead ends: 272 [2021-10-13 07:26:10,511 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 07:26:10,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 07:26:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2021-10-13 07:26:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-10-13 07:26:10,525 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-10-13 07:26:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:10,526 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-10-13 07:26:10,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-10-13 07:26:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:26:10,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:10,529 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-10-13 07:26:10,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:10,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:10,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1238030766, now seen corresponding path program 1 times [2021-10-13 07:26:10,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:10,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242250097] [2021-10-13 07:26:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:10,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:10,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:10,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:26:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:10,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:10,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:26:11,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:26:11,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:11,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242250097] [2021-10-13 07:26:11,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242250097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:11,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:11,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:11,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680810117] [2021-10-13 07:26:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:11,341 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:11,613 INFO L93 Difference]: Finished difference Result 355 states and 540 transitions. [2021-10-13 07:26:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:11,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 07:26:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:11,616 INFO L225 Difference]: With dead ends: 355 [2021-10-13 07:26:11,616 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 07:26:11,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 07:26:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2021-10-13 07:26:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4354066985645932) internal successors, (300), 209 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 300 transitions. [2021-10-13 07:26:11,648 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 300 transitions. Word has length 68 [2021-10-13 07:26:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:11,651 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 300 transitions. [2021-10-13 07:26:11,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 300 transitions. [2021-10-13 07:26:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:26:11,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:11,660 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-10-13 07:26:11,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:11,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:11,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash 137052613, now seen corresponding path program 1 times [2021-10-13 07:26:11,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:11,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352248947] [2021-10-13 07:26:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:11,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:11,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:11,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:11,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:26:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:12,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:12,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:26:12,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:26:12,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:12,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352248947] [2021-10-13 07:26:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352248947] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:12,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:12,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:12,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722387071] [2021-10-13 07:26:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:12,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:12,394 INFO L87 Difference]: Start difference. First operand 210 states and 300 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:12,539 INFO L93 Difference]: Finished difference Result 434 states and 627 transitions. [2021-10-13 07:26:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 07:26:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:12,544 INFO L225 Difference]: With dead ends: 434 [2021-10-13 07:26:12,544 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 07:26:12,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 07:26:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2021-10-13 07:26:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 228 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2021-10-13 07:26:12,576 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 69 [2021-10-13 07:26:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:12,578 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2021-10-13 07:26:12,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2021-10-13 07:26:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 07:26:12,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:12,585 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2021-10-13 07:26:12,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:12,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:12,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:12,799 INFO L82 PathProgramCache]: Analyzing trace with hash 614595817, now seen corresponding path program 1 times [2021-10-13 07:26:12,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:12,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129336772] [2021-10-13 07:26:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:12,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:12,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:12,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:12,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:26:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:13,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:26:13,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 07:26:13,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:13,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129336772] [2021-10-13 07:26:13,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129336772] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:13,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:13,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:13,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637177204] [2021-10-13 07:26:13,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:13,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:13,443 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:13,567 INFO L93 Difference]: Finished difference Result 472 states and 676 transitions. [2021-10-13 07:26:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-13 07:26:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:13,570 INFO L225 Difference]: With dead ends: 472 [2021-10-13 07:26:13,570 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 07:26:13,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 07:26:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2021-10-13 07:26:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.4056224899598393) internal successors, (350), 249 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 350 transitions. [2021-10-13 07:26:13,583 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 350 transitions. Word has length 86 [2021-10-13 07:26:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:13,584 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 350 transitions. [2021-10-13 07:26:13,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 350 transitions. [2021-10-13 07:26:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:26:13,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:13,586 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-10-13 07:26:13,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:13,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:13,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:13,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1901861672, now seen corresponding path program 1 times [2021-10-13 07:26:13,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:13,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413433739] [2021-10-13 07:26:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:13,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:13,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:13,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:13,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:26:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:14,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:14,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:26:14,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:26:14,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:14,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413433739] [2021-10-13 07:26:14,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413433739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:14,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:14,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297197900] [2021-10-13 07:26:14,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:14,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:14,539 INFO L87 Difference]: Start difference. First operand 250 states and 350 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:14,609 INFO L93 Difference]: Finished difference Result 752 states and 1051 transitions. [2021-10-13 07:26:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 07:26:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:14,613 INFO L225 Difference]: With dead ends: 752 [2021-10-13 07:26:14,613 INFO L226 Difference]: Without dead ends: 512 [2021-10-13 07:26:14,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-13 07:26:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-13 07:26:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.385518590998043) internal successors, (708), 511 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 708 transitions. [2021-10-13 07:26:14,633 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 708 transitions. Word has length 105 [2021-10-13 07:26:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:14,634 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 708 transitions. [2021-10-13 07:26:14,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 708 transitions. [2021-10-13 07:26:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 07:26:14,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:14,636 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-10-13 07:26:14,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:14,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:14,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:14,848 INFO L82 PathProgramCache]: Analyzing trace with hash 703454395, now seen corresponding path program 1 times [2021-10-13 07:26:14,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:14,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314143314] [2021-10-13 07:26:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:14,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:14,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:14,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:14,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:26:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:15,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:15,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:26:15,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 07:26:15,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:15,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314143314] [2021-10-13 07:26:15,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314143314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:15,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:15,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:15,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794099337] [2021-10-13 07:26:15,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:15,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:15,605 INFO L87 Difference]: Start difference. First operand 512 states and 708 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:15,638 INFO L93 Difference]: Finished difference Result 1035 states and 1430 transitions. [2021-10-13 07:26:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:15,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-13 07:26:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:15,642 INFO L225 Difference]: With dead ends: 1035 [2021-10-13 07:26:15,643 INFO L226 Difference]: Without dead ends: 533 [2021-10-13 07:26:15,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-10-13 07:26:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2021-10-13 07:26:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.381578947368421) internal successors, (735), 532 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 735 transitions. [2021-10-13 07:26:15,664 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 735 transitions. Word has length 106 [2021-10-13 07:26:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:15,665 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 735 transitions. [2021-10-13 07:26:15,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 735 transitions. [2021-10-13 07:26:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 07:26:15,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:15,669 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-10-13 07:26:15,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:15,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash 943694141, now seen corresponding path program 1 times [2021-10-13 07:26:15,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:15,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537324034] [2021-10-13 07:26:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:15,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:15,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:15,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:26:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:26:16,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 07:26:16,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:16,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537324034] [2021-10-13 07:26:16,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537324034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:16,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:16,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:16,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145209381] [2021-10-13 07:26:16,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:16,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:16,689 INFO L87 Difference]: Start difference. First operand 533 states and 735 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:16,719 INFO L93 Difference]: Finished difference Result 1083 states and 1491 transitions. [2021-10-13 07:26:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:16,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-13 07:26:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:16,727 INFO L225 Difference]: With dead ends: 1083 [2021-10-13 07:26:16,727 INFO L226 Difference]: Without dead ends: 560 [2021-10-13 07:26:16,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-13 07:26:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-10-13 07:26:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3756708407871199) internal successors, (769), 559 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 769 transitions. [2021-10-13 07:26:16,748 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 769 transitions. Word has length 106 [2021-10-13 07:26:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 769 transitions. [2021-10-13 07:26:16,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 769 transitions. [2021-10-13 07:26:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 07:26:16,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:16,751 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 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] [2021-10-13 07:26:16,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:16,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:16,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:16,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2015927886, now seen corresponding path program 1 times [2021-10-13 07:26:16,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:16,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113694566] [2021-10-13 07:26:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:16,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:16,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:16,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:26:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:17,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:26:17,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 07:26:17,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:17,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113694566] [2021-10-13 07:26:17,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113694566] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:17,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:17,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:17,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70150391] [2021-10-13 07:26:17,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:17,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:17,801 INFO L87 Difference]: Start difference. First operand 560 states and 769 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:17,863 INFO L93 Difference]: Finished difference Result 1496 states and 2084 transitions. [2021-10-13 07:26:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-13 07:26:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:17,869 INFO L225 Difference]: With dead ends: 1496 [2021-10-13 07:26:17,869 INFO L226 Difference]: Without dead ends: 973 [2021-10-13 07:26:17,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:17,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-10-13 07:26:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2021-10-13 07:26:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.396090534979424) internal successors, (1357), 972 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1357 transitions. [2021-10-13 07:26:17,904 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1357 transitions. Word has length 107 [2021-10-13 07:26:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:17,905 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1357 transitions. [2021-10-13 07:26:17,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1357 transitions. [2021-10-13 07:26:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-13 07:26:17,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:17,909 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:17,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:18,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:18,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:18,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1870688019, now seen corresponding path program 1 times [2021-10-13 07:26:18,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:18,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508406242] [2021-10-13 07:26:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:18,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:18,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:18,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:26:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:18,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:18,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-13 07:26:18,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-13 07:26:19,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:19,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508406242] [2021-10-13 07:26:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508406242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:19,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:19,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720428322] [2021-10-13 07:26:19,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:19,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:19,220 INFO L87 Difference]: Start difference. First operand 973 states and 1357 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:19,433 INFO L93 Difference]: Finished difference Result 2032 states and 2872 transitions. [2021-10-13 07:26:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-10-13 07:26:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:19,441 INFO L225 Difference]: With dead ends: 2032 [2021-10-13 07:26:19,441 INFO L226 Difference]: Without dead ends: 1096 [2021-10-13 07:26:19,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-13 07:26:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1065. [2021-10-13 07:26:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 1.3768796992481203) internal successors, (1465), 1064 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1465 transitions. [2021-10-13 07:26:19,499 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1465 transitions. Word has length 162 [2021-10-13 07:26:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:19,500 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1465 transitions. [2021-10-13 07:26:19,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1465 transitions. [2021-10-13 07:26:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-13 07:26:19,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:19,506 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:19,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:19,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:19,720 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:19,721 INFO L82 PathProgramCache]: Analyzing trace with hash -658182266, now seen corresponding path program 1 times [2021-10-13 07:26:19,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:19,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256944921] [2021-10-13 07:26:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:19,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:19,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:19,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:26:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-13 07:26:20,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-13 07:26:20,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:20,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256944921] [2021-10-13 07:26:20,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256944921] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:20,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:20,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:20,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157267281] [2021-10-13 07:26:20,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:20,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:20,964 INFO L87 Difference]: Start difference. First operand 1065 states and 1465 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:21,175 INFO L93 Difference]: Finished difference Result 2198 states and 3055 transitions. [2021-10-13 07:26:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:21,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-10-13 07:26:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:21,182 INFO L225 Difference]: With dead ends: 2198 [2021-10-13 07:26:21,183 INFO L226 Difference]: Without dead ends: 1170 [2021-10-13 07:26:21,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-10-13 07:26:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1140. [2021-10-13 07:26:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.3617208077260754) internal successors, (1551), 1139 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1551 transitions. [2021-10-13 07:26:21,226 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1551 transitions. Word has length 184 [2021-10-13 07:26:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:21,226 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1551 transitions. [2021-10-13 07:26:21,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1551 transitions. [2021-10-13 07:26:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-10-13 07:26:21,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:21,232 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:21,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:21,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:21,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:21,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1893724843, now seen corresponding path program 1 times [2021-10-13 07:26:21,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:21,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061847825] [2021-10-13 07:26:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:21,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:21,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:21,446 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:21,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:26:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:22,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:22,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 07:26:22,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 07:26:22,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:22,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061847825] [2021-10-13 07:26:22,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061847825] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:22,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:22,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219776270] [2021-10-13 07:26:22,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:22,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:22,942 INFO L87 Difference]: Start difference. First operand 1140 states and 1551 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:23,160 INFO L93 Difference]: Finished difference Result 2376 states and 3269 transitions. [2021-10-13 07:26:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-10-13 07:26:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:23,168 INFO L225 Difference]: With dead ends: 2376 [2021-10-13 07:26:23,169 INFO L226 Difference]: Without dead ends: 1273 [2021-10-13 07:26:23,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-10-13 07:26:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1252. [2021-10-13 07:26:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.3421262989608314) internal successors, (1679), 1251 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1679 transitions. [2021-10-13 07:26:23,217 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1679 transitions. Word has length 221 [2021-10-13 07:26:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1679 transitions. [2021-10-13 07:26:23,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1679 transitions. [2021-10-13 07:26:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-10-13 07:26:23,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:23,223 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:23,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:23,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:23,436 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:23,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1250571054, now seen corresponding path program 1 times [2021-10-13 07:26:23,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:23,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175976589] [2021-10-13 07:26:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:23,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:23,441 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:23,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:26:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:24,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:24,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 07:26:24,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 07:26:24,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:24,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175976589] [2021-10-13 07:26:24,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175976589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:24,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:24,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:24,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637023623] [2021-10-13 07:26:24,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:24,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:24,962 INFO L87 Difference]: Start difference. First operand 1252 states and 1679 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:25,209 INFO L93 Difference]: Finished difference Result 2616 states and 3557 transitions. [2021-10-13 07:26:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2021-10-13 07:26:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:25,218 INFO L225 Difference]: With dead ends: 2616 [2021-10-13 07:26:25,218 INFO L226 Difference]: Without dead ends: 1401 [2021-10-13 07:26:25,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-10-13 07:26:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1376. [2021-10-13 07:26:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 1.3229090909090908) internal successors, (1819), 1375 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1819 transitions. [2021-10-13 07:26:25,268 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1819 transitions. Word has length 222 [2021-10-13 07:26:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:25,268 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1819 transitions. [2021-10-13 07:26:25,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1819 transitions. [2021-10-13 07:26:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-10-13 07:26:25,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:25,275 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:25,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:25,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:25,488 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 12496008, now seen corresponding path program 1 times [2021-10-13 07:26:25,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:25,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56796132] [2021-10-13 07:26:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:25,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:25,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:25,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:26:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:26,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-10-13 07:26:26,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 622 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-10-13 07:26:27,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:27,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56796132] [2021-10-13 07:26:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56796132] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:27,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:27,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:27,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384990201] [2021-10-13 07:26:27,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:27,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:27,350 INFO L87 Difference]: Start difference. First operand 1376 states and 1819 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:27,439 INFO L93 Difference]: Finished difference Result 5273 states and 6992 transitions. [2021-10-13 07:26:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-10-13 07:26:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:27,461 INFO L225 Difference]: With dead ends: 5273 [2021-10-13 07:26:27,461 INFO L226 Difference]: Without dead ends: 3934 [2021-10-13 07:26:27,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-10-13 07:26:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3930. [2021-10-13 07:26:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3929 states have (on average 1.3252736065156527) internal successors, (5207), 3929 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5207 transitions. [2021-10-13 07:26:27,621 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5207 transitions. Word has length 264 [2021-10-13 07:26:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:27,622 INFO L470 AbstractCegarLoop]: Abstraction has 3930 states and 5207 transitions. [2021-10-13 07:26:27,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5207 transitions. [2021-10-13 07:26:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-10-13 07:26:27,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:27,631 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:27,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 07:26:27,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:27,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:27,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash 130937482, now seen corresponding path program 1 times [2021-10-13 07:26:27,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:27,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370856708] [2021-10-13 07:26:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:27,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:27,848 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:27,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:26:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:28,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:28,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 07:26:29,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 07:26:29,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:29,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370856708] [2021-10-13 07:26:29,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370856708] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:29,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:29,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:29,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017357158] [2021-10-13 07:26:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:29,685 INFO L87 Difference]: Start difference. First operand 3930 states and 5207 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:29,989 INFO L93 Difference]: Finished difference Result 8279 states and 11134 transitions. [2021-10-13 07:26:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-10-13 07:26:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:30,013 INFO L225 Difference]: With dead ends: 8279 [2021-10-13 07:26:30,013 INFO L226 Difference]: Without dead ends: 4386 [2021-10-13 07:26:30,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-10-13 07:26:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4362. [2021-10-13 07:26:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 1.3040587021325385) internal successors, (5687), 4361 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 5687 transitions. [2021-10-13 07:26:30,217 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 5687 transitions. Word has length 264 [2021-10-13 07:26:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:30,218 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 5687 transitions. [2021-10-13 07:26:30,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 5687 transitions. [2021-10-13 07:26:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-10-13 07:26:30,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:30,231 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:30,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:30,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:30,446 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash -401878956, now seen corresponding path program 1 times [2021-10-13 07:26:30,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:30,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376018366] [2021-10-13 07:26:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:30,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:30,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:30,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:26:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:31,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:31,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 07:26:31,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 07:26:32,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:32,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376018366] [2021-10-13 07:26:32,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376018366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:32,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:32,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:32,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703346579] [2021-10-13 07:26:32,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:32,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:32,455 INFO L87 Difference]: Start difference. First operand 4362 states and 5687 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:32,779 INFO L93 Difference]: Finished difference Result 8951 states and 11706 transitions. [2021-10-13 07:26:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:32,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-10-13 07:26:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:32,804 INFO L225 Difference]: With dead ends: 8951 [2021-10-13 07:26:32,805 INFO L226 Difference]: Without dead ends: 4626 [2021-10-13 07:26:32,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-10-13 07:26:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4494. [2021-10-13 07:26:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4493 states have (on average 1.2969062986868463) internal successors, (5827), 4493 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 5827 transitions. [2021-10-13 07:26:33,010 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 5827 transitions. Word has length 288 [2021-10-13 07:26:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:33,010 INFO L470 AbstractCegarLoop]: Abstraction has 4494 states and 5827 transitions. [2021-10-13 07:26:33,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 5827 transitions. [2021-10-13 07:26:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-10-13 07:26:33,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:33,021 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:33,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:33,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:33,235 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1160996306, now seen corresponding path program 1 times [2021-10-13 07:26:33,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:33,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046298992] [2021-10-13 07:26:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:33,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:33,239 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:33,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:26:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:34,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 07:26:34,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 07:26:35,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:35,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046298992] [2021-10-13 07:26:35,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046298992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:35,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:35,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:35,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86146013] [2021-10-13 07:26:35,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:35,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:35,497 INFO L87 Difference]: Start difference. First operand 4494 states and 5827 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:35,789 INFO L93 Difference]: Finished difference Result 9527 states and 12518 transitions. [2021-10-13 07:26:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2021-10-13 07:26:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:35,835 INFO L225 Difference]: With dead ends: 9527 [2021-10-13 07:26:35,836 INFO L226 Difference]: Without dead ends: 5070 [2021-10-13 07:26:35,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2021-10-13 07:26:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4938. [2021-10-13 07:26:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 1.279927081223415) internal successors, (6319), 4937 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6319 transitions. [2021-10-13 07:26:36,014 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6319 transitions. Word has length 300 [2021-10-13 07:26:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:36,014 INFO L470 AbstractCegarLoop]: Abstraction has 4938 states and 6319 transitions. [2021-10-13 07:26:36,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6319 transitions. [2021-10-13 07:26:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-10-13 07:26:36,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:36,026 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:36,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:36,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:36,240 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:36,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1130069297, now seen corresponding path program 1 times [2021-10-13 07:26:36,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:36,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640001736] [2021-10-13 07:26:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:36,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:36,242 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:36,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:26:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:37,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:37,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 745 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 07:26:38,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 745 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 07:26:38,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:38,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640001736] [2021-10-13 07:26:38,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640001736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:38,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:38,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:38,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234006934] [2021-10-13 07:26:38,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:38,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:38,579 INFO L87 Difference]: Start difference. First operand 4938 states and 6319 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:38,839 INFO L93 Difference]: Finished difference Result 10451 states and 13562 transitions. [2021-10-13 07:26:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2021-10-13 07:26:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:38,851 INFO L225 Difference]: With dead ends: 10451 [2021-10-13 07:26:38,851 INFO L226 Difference]: Without dead ends: 5550 [2021-10-13 07:26:38,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-10-13 07:26:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5430. [2021-10-13 07:26:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5429 states have (on average 1.2634002578743784) internal successors, (6859), 5429 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 6859 transitions. [2021-10-13 07:26:39,038 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 6859 transitions. Word has length 337 [2021-10-13 07:26:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:39,039 INFO L470 AbstractCegarLoop]: Abstraction has 5430 states and 6859 transitions. [2021-10-13 07:26:39,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 6859 transitions. [2021-10-13 07:26:39,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-10-13 07:26:39,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:39,050 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:39,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:39,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:39,266 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1337383626, now seen corresponding path program 1 times [2021-10-13 07:26:39,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:39,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113746215] [2021-10-13 07:26:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:39,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:39,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:39,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:39,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:26:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:40,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 889 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-10-13 07:26:41,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 889 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-10-13 07:26:42,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:42,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113746215] [2021-10-13 07:26:42,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113746215] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:42,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:42,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:26:42,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627950461] [2021-10-13 07:26:42,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:26:42,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:26:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:42,077 INFO L87 Difference]: Start difference. First operand 5430 states and 6859 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:42,247 INFO L93 Difference]: Finished difference Result 15628 states and 19791 transitions. [2021-10-13 07:26:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:26:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-10-13 07:26:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:42,312 INFO L225 Difference]: With dead ends: 15628 [2021-10-13 07:26:42,312 INFO L226 Difference]: Without dead ends: 10235 [2021-10-13 07:26:42,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:26:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-10-13 07:26:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 10233. [2021-10-13 07:26:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10233 states, 10232 states have (on average 1.2652462861610634) internal successors, (12946), 10232 states have internal predecessors, (12946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10233 states to 10233 states and 12946 transitions. [2021-10-13 07:26:42,635 INFO L78 Accepts]: Start accepts. Automaton has 10233 states and 12946 transitions. Word has length 339 [2021-10-13 07:26:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:42,636 INFO L470 AbstractCegarLoop]: Abstraction has 10233 states and 12946 transitions. [2021-10-13 07:26:42,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10233 states and 12946 transitions. [2021-10-13 07:26:42,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-10-13 07:26:42,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:42,654 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:42,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:42,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:42,869 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 722980357, now seen corresponding path program 1 times [2021-10-13 07:26:42,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:42,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326054075] [2021-10-13 07:26:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:42,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:42,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:42,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:26:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:26:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:44,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:45,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:45,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326054075] [2021-10-13 07:26:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326054075] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:45,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1456404113] [2021-10-13 07:26:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:45,635 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:26:45,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:26:45,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:26:45,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 07:26:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:47,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:26:47,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:48,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1456404113] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:49,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831696674] [2021-10-13 07:26:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:49,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:49,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:49,216 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 07:26:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:51,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:26:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:52,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 791 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-10-13 07:26:52,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831696674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:52,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:26:52,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:26:52,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082362934] [2021-10-13 07:26:52,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:26:52,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:52,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:26:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:26:52,683 INFO L87 Difference]: Start difference. First operand 10233 states and 12946 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:53,519 INFO L93 Difference]: Finished difference Result 26979 states and 34196 transitions. [2021-10-13 07:26:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:26:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2021-10-13 07:26:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:53,552 INFO L225 Difference]: With dead ends: 26979 [2021-10-13 07:26:53,552 INFO L226 Difference]: Without dead ends: 16783 [2021-10-13 07:26:53,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2084 GetRequests, 2076 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:26:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16783 states. [2021-10-13 07:26:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16783 to 11427. [2021-10-13 07:26:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11427 states, 11426 states have (on average 1.2753369508139332) internal successors, (14572), 11426 states have internal predecessors, (14572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11427 states to 11427 states and 14572 transitions. [2021-10-13 07:26:53,966 INFO L78 Accepts]: Start accepts. Automaton has 11427 states and 14572 transitions. Word has length 347 [2021-10-13 07:26:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:53,967 INFO L470 AbstractCegarLoop]: Abstraction has 11427 states and 14572 transitions. [2021-10-13 07:26:53,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 11427 states and 14572 transitions. [2021-10-13 07:26:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-10-13 07:26:53,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:53,986 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:54,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:54,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:54,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 07:26:54,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:54,604 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1673901931, now seen corresponding path program 1 times [2021-10-13 07:26:54,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:54,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869221502] [2021-10-13 07:26:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:54,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:54,606 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:54,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 07:26:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:26:56,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:26:56,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-10-13 07:26:57,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-10-13 07:26:57,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:26:57,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869221502] [2021-10-13 07:26:57,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869221502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:26:57,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:26:57,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:26:57,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902283700] [2021-10-13 07:26:57,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:26:57,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:26:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:57,948 INFO L87 Difference]: Start difference. First operand 11427 states and 14572 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:58,234 INFO L93 Difference]: Finished difference Result 21470 states and 27440 transitions. [2021-10-13 07:26:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:26:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2021-10-13 07:26:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:58,248 INFO L225 Difference]: With dead ends: 21470 [2021-10-13 07:26:58,249 INFO L226 Difference]: Without dead ends: 5349 [2021-10-13 07:26:58,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:26:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-10-13 07:26:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 5025. [2021-10-13 07:26:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 5024 states have (on average 1.2442277070063694) internal successors, (6251), 5024 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6251 transitions. [2021-10-13 07:26:58,435 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6251 transitions. Word has length 415 [2021-10-13 07:26:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:58,436 INFO L470 AbstractCegarLoop]: Abstraction has 5025 states and 6251 transitions. [2021-10-13 07:26:58,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6251 transitions. [2021-10-13 07:26:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-10-13 07:26:58,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:26:58,446 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 16, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:26:58,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:58,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:26:58,661 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:26:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:26:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash -912634457, now seen corresponding path program 1 times [2021-10-13 07:26:58,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:26:58,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732505373] [2021-10-13 07:26:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:26:58,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:26:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:26:58,663 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:26:58,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 07:27:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:00,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1576 proven. 14 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-10-13 07:27:01,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1576 proven. 14 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-10-13 07:27:02,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:02,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732505373] [2021-10-13 07:27:02,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732505373] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:02,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936836976] [2021-10-13 07:27:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:02,518 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:27:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:27:02,519 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:27:02,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-13 07:27:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:05,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:27:05,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1182 proven. 0 refuted. 0 times theorem prover too weak. 1544 trivial. 0 not checked. [2021-10-13 07:27:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1182 proven. 0 refuted. 0 times theorem prover too weak. 1544 trivial. 0 not checked. [2021-10-13 07:27:07,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936836976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:07,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:27:07,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 7 [2021-10-13 07:27:07,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197350046] [2021-10-13 07:27:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:27:07,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:27:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:27:07,490 INFO L87 Difference]: Start difference. First operand 5025 states and 6251 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:07,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:07,573 INFO L93 Difference]: Finished difference Result 5050 states and 6281 transitions. [2021-10-13 07:27:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:27:07,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 498 [2021-10-13 07:27:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:07,581 INFO L225 Difference]: With dead ends: 5050 [2021-10-13 07:27:07,582 INFO L226 Difference]: Without dead ends: 4973 [2021-10-13 07:27:07,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1983 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:27:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2021-10-13 07:27:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 4950. [2021-10-13 07:27:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4949 states have (on average 1.2440897150939583) internal successors, (6157), 4949 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 6157 transitions. [2021-10-13 07:27:07,704 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 6157 transitions. Word has length 498 [2021-10-13 07:27:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:07,705 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 6157 transitions. [2021-10-13 07:27:07,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 6157 transitions. [2021-10-13 07:27:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-10-13 07:27:07,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:07,716 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 18, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 07:27:07,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:07,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:08,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:08,125 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:27:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash 646732426, now seen corresponding path program 1 times [2021-10-13 07:27:08,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:08,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149724897] [2021-10-13 07:27:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:08,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:08,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:08,127 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:08,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:27:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:10,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:10,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:11,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:12,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:12,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149724897] [2021-10-13 07:27:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149724897] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:12,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1880560295] [2021-10-13 07:27:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:12,806 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:27:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:27:12,807 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:27:12,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-10-13 07:27:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:16,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:17,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:18,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1880560295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:18,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242593271] [2021-10-13 07:27:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:18,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:18,849 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:27:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 07:27:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:22,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:23,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 2059 proven. 14 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2021-10-13 07:27:24,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242593271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:27:24,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:27:24,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:27:24,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22466704] [2021-10-13 07:27:24,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:27:24,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:24,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:27:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:27:24,804 INFO L87 Difference]: Start difference. First operand 4950 states and 6157 transitions. Second operand has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:25,007 INFO L93 Difference]: Finished difference Result 5185 states and 6455 transitions. [2021-10-13 07:27:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:27:25,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 610 [2021-10-13 07:27:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:25,008 INFO L225 Difference]: With dead ends: 5185 [2021-10-13 07:27:25,008 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:27:25,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3658 GetRequests, 3652 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:27:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:27:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:27:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:27:25,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 610 [2021-10-13 07:27:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:27:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:27:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:27:25,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:27:25,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:27:25,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:25,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:25,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-13 07:27:25,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:27:25,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:27:25,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:25,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:25,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:26,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:29,684 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 500) no Hoare annotation was computed. [2021-10-13 07:27:29,684 INFO L857 garLoopResultBuilder]: For program point L498-2(lines 498 500) no Hoare annotation was computed. [2021-10-13 07:27:29,684 INFO L857 garLoopResultBuilder]: For program point L300(lines 300 304) no Hoare annotation was computed. [2021-10-13 07:27:29,684 INFO L857 garLoopResultBuilder]: For program point L300-2(lines 300 304) no Hoare annotation was computed. [2021-10-13 07:27:29,684 INFO L860 garLoopResultBuilder]: At program point L565(lines 108 566) the Hoare annotation is: true [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 515) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 526) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 537) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 107) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 516) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse10 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (or (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse9 .cse10) (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (let ((.cse11 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (or (and .cse11 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (and (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4384 32))) .cse0 .cse11 .cse1 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) (not .cse2)))) [2021-10-13 07:27:29,685 INFO L853 garLoopResultBuilder]: At program point L137(lines 133 538) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 106) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 253) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 212 510) no Hoare annotation was computed. [2021-10-13 07:27:29,685 INFO L857 garLoopResultBuilder]: For program point L469(lines 469 481) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 450) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L436-1(lines 436 450) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L469-2(lines 469 481) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 340) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 273) no Hoare annotation was computed. [2021-10-13 07:27:29,686 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 514) no Hoare annotation was computed. [2021-10-13 07:27:29,687 INFO L857 garLoopResultBuilder]: For program point L271-2(lines 212 510) no Hoare annotation was computed. [2021-10-13 07:27:29,687 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 525) no Hoare annotation was computed. [2021-10-13 07:27:29,687 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 536) no Hoare annotation was computed. [2021-10-13 07:27:29,687 INFO L857 garLoopResultBuilder]: For program point L503(lines 503 505) no Hoare annotation was computed. [2021-10-13 07:27:29,687 INFO L853 garLoopResultBuilder]: At program point L206(lines 205 514) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32)))) (or (and (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse1) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not .cse0) .cse1))) [2021-10-13 07:27:29,687 INFO L853 garLoopResultBuilder]: At program point L173(lines 163 528) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L570(lines 570 572) no Hoare annotation was computed. [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L570-2(lines 570 572) no Hoare annotation was computed. [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 408) no Hoare annotation was computed. [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 513) no Hoare annotation was computed. [2021-10-13 07:27:29,688 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 524) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 535) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 86 576) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 446) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L860 garLoopResultBuilder]: At program point L209(lines 208 513) the Hoare annotation is: true [2021-10-13 07:27:29,689 INFO L853 garLoopResultBuilder]: At program point L143(lines 139 536) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse10 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4384 32))) .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse7 .cse8 .cse9 .cse10) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L857 garLoopResultBuilder]: For program point L475(lines 475 478) no Hoare annotation was computed. [2021-10-13 07:27:29,689 INFO L860 garLoopResultBuilder]: At program point L211(lines 210 513) the Hoare annotation is: true [2021-10-13 07:27:29,690 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 523) no Hoare annotation was computed. [2021-10-13 07:27:29,690 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 534) no Hoare annotation was computed. [2021-10-13 07:27:29,691 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 545) no Hoare annotation was computed. [2021-10-13 07:27:29,691 INFO L860 garLoopResultBuilder]: At program point L575(lines 12 577) the Hoare annotation is: true [2021-10-13 07:27:29,691 INFO L857 garLoopResultBuilder]: For program point L311(lines 311 321) no Hoare annotation was computed. [2021-10-13 07:27:29,691 INFO L857 garLoopResultBuilder]: For program point L311-2(lines 311 321) no Hoare annotation was computed. [2021-10-13 07:27:29,691 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 524) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,691 INFO L853 garLoopResultBuilder]: At program point L113(lines 112 545) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 347) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L853 garLoopResultBuilder]: At program point L511(lines 109 564) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (let ((.cse3 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32))) (.cse5 (not .cse1)) (.cse10 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32))) (.cse11 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4384 32)))) (.cse8 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (.cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse6 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse4 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse12 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32)))) (or (and .cse0 .cse1 .cse2 .cse3) (and (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse4 .cse3 .cse5) (and .cse0 (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse1 .cse6) (and .cse0 .cse1 (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse6) (and .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)) .cse6) (and .cse4 .cse7) (and .cse0 .cse1 .cse6 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (and .cse4 .cse1 .cse8) (and .cse0 .cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4448 32)) .cse6) (and .cse4 .cse1 .cse9) (and .cse0 .cse1 .cse2 .cse10) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse4 .cse5 .cse10) (and .cse11 .cse0 .cse9) (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (and .cse11 .cse0 .cse1 .cse8 .cse6) (and .cse0 .cse1 .cse12 .cse6) (and .cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse1 .cse6) (and .cse0 .cse1 .cse6 .cse7) (and .cse4 .cse12)))) [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 416) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L853 garLoopResultBuilder]: At program point L346(lines 86 576) the Hoare annotation is: false [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L412-2(lines 212 510) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 522) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 533) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 544) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 251) no Hoare annotation was computed. [2021-10-13 07:27:29,692 INFO L853 garLoopResultBuilder]: At program point L149(lines 145 534) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,692 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 562) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L381(lines 381 383) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 317) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L282(lines 282 284) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 313 321) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L547(lines 547 561) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L853 garLoopResultBuilder]: At program point L217(lines 115 544) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 521) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 532) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 543) no Hoare annotation was computed. [2021-10-13 07:27:29,693 INFO L857 garLoopResultBuilder]: For program point L548(lines 548 553) no Hoare annotation was computed. [2021-10-13 07:27:29,694 INFO L857 garLoopResultBuilder]: For program point L548-2(lines 547 561) no Hoare annotation was computed. [2021-10-13 07:27:29,694 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:27:29,694 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 522) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,694 INFO L857 garLoopResultBuilder]: For program point L550(lines 550 552) no Hoare annotation was computed. [2021-10-13 07:27:29,694 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 390) no Hoare annotation was computed. [2021-10-13 07:27:29,694 INFO L857 garLoopResultBuilder]: For program point L385-2(lines 385 390) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 520) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 531) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 542) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L853 garLoopResultBuilder]: At program point L155(lines 151 532) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L486-1(lines 486 488) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:27:29,695 INFO L857 garLoopResultBuilder]: For program point L222-2(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L860 garLoopResultBuilder]: At program point L586(lines 578 588) the Hoare annotation is: true [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point L421(lines 421 424) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 519) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 530) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 541) no Hoare annotation was computed. [2021-10-13 07:27:29,696 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 296) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 520) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 .cse9) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L555(lines 555 559) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L456(lines 456 458) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 359) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L259(lines 259 262) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 518) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 529) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 540) no Hoare annotation was computed. [2021-10-13 07:27:29,697 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:27:29,698 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 295) no Hoare annotation was computed. [2021-10-13 07:27:29,698 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 230) no Hoare annotation was computed. [2021-10-13 07:27:29,698 INFO L857 garLoopResultBuilder]: For program point L293-2(lines 212 510) no Hoare annotation was computed. [2021-10-13 07:27:29,698 INFO L853 garLoopResultBuilder]: At program point L161(lines 157 530) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,698 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 101) no Hoare annotation was computed. [2021-10-13 07:27:29,698 INFO L857 garLoopResultBuilder]: For program point L492(lines 492 494) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 463) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L492-2(lines 492 494) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L459-2(lines 459 463) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L360(lines 360 364) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L360-2(lines 360 364) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 517) no Hoare annotation was computed. [2021-10-13 07:27:29,699 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 528) no Hoare annotation was computed. [2021-10-13 07:27:29,700 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 539) no Hoare annotation was computed. [2021-10-13 07:27:29,700 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 331) no Hoare annotation was computed. [2021-10-13 07:27:29,700 INFO L857 garLoopResultBuilder]: For program point L329-2(lines 212 510) no Hoare annotation was computed. [2021-10-13 07:27:29,700 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 518) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) (.cse9 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))))) (or (and .cse0 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 .cse9) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 .cse8 .cse9))) [2021-10-13 07:27:29,700 INFO L853 garLoopResultBuilder]: At program point L131(lines 127 540) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4385 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32)))) [2021-10-13 07:27:29,700 INFO L857 garLoopResultBuilder]: For program point L98(lines 98 100) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point L98-2(lines 95 101) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 574) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 431) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point L396(lines 396 398) no Hoare annotation was computed. [2021-10-13 07:27:29,701 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 516) no Hoare annotation was computed. [2021-10-13 07:27:29,702 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 527) no Hoare annotation was computed. [2021-10-13 07:27:29,702 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 538) no Hoare annotation was computed. [2021-10-13 07:27:29,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:27:29,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:27:29 BoogieIcfgContainer [2021-10-13 07:27:29,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:27:29,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:27:29,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:27:29,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:27:29,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:26:07" (3/4) ... [2021-10-13 07:27:29,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:27:29,810 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:27:29,811 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:27:29,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:27:29,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:27:29,938 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:27:29,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:27:29,940 INFO L168 Benchmark]: Toolchain (without parser) took 83637.45 ms. Allocated memory was 65.0 MB in the beginning and 708.8 MB in the end (delta: 643.8 MB). Free memory was 44.6 MB in the beginning and 287.7 MB in the end (delta: -243.1 MB). Peak memory consumption was 400.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,940 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:29,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.42 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 45.1 MB in the end (delta: -692.6 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.56 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 42.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,942 INFO L168 Benchmark]: Boogie Preprocessor took 79.12 ms. Allocated memory is still 65.0 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,942 INFO L168 Benchmark]: RCFGBuilder took 856.40 ms. Allocated memory was 65.0 MB in the beginning and 100.7 MB in the end (delta: 35.7 MB). Free memory was 40.3 MB in the beginning and 70.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,943 INFO L168 Benchmark]: TraceAbstraction took 82020.91 ms. Allocated memory was 100.7 MB in the beginning and 708.8 MB in the end (delta: 608.2 MB). Free memory was 69.9 MB in the beginning and 297.1 MB in the end (delta: -227.2 MB). Peak memory consumption was 428.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,943 INFO L168 Benchmark]: Witness Printer took 157.14 ms. Allocated memory is still 708.8 MB. Free memory was 297.1 MB in the beginning and 287.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:29,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 437.42 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 45.1 MB in the end (delta: -692.6 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.56 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 42.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.12 ms. Allocated memory is still 65.0 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 856.40 ms. Allocated memory was 65.0 MB in the beginning and 100.7 MB in the end (delta: 35.7 MB). Free memory was 40.3 MB in the beginning and 70.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 82020.91 ms. Allocated memory was 100.7 MB in the beginning and 708.8 MB in the end (delta: 608.2 MB). Free memory was 69.9 MB in the beginning and 297.1 MB in the end (delta: -227.2 MB). Peak memory consumption was 428.2 MB. Max. memory is 16.1 GB. * Witness Printer took 157.14 ms. Allocated memory is still 708.8 MB. Free memory was 297.1 MB in the beginning and 287.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 574]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81844.4ms, OverallIterations: 24, TraceHistogramMax: 21, EmptinessCheckTime: 186.5ms, AutomataDifference: 5546.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4067.6ms, InitialAbstractionConstructionTime: 27.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4223 SDtfs, 3313 SDslu, 3729 SDs, 0 SdLazy, 3386 SolverSat, 656 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2595.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15198 GetRequests, 15145 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 189.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11427occurred in iteration=21, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2317.7ms AutomataMinimizationTime, 24 MinimizatonAttempts, 6248 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 265 NumberOfFragments, 1150 HoareAnnotationTreeSize, 22 FomulaSimplifications, 17885 FormulaSimplificationTreeSizeReduction, 1315.7ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 11909 FormulaSimplificationTreeSizeReductionInter, 2737.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 567.4ms SsaConstructionTime, 2081.8ms SatisfiabilityAnalysisTime, 30269.4ms InterpolantComputationTime, 7622 NumberOfCodeBlocks, 7622 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 15186 ConstructedInterpolants, 0 QuantifiedInterpolants, 19573 SizeOfPredicates, 10 NumberOfNonLiveVariables, 9628 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 58 InterpolantComputations, 44 PerfectInterpolantSequences, 67502/67686 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 210]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: (((((((((((((((((((((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4560bv32) || (s__state == 4368bv32 && 0bv32 == blastFlag)) || ((2bv32 == blastFlag && s__state == 4560bv32) && !(s__hit == 0bv32))) || (((!(3bv32 == blastFlag) && 4464bv32 == s__state) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && 4432bv32 == s__state) && !(5bv32 == blastFlag))) || ((s__hit == 0bv32 && s__state == 4416bv32) && !(5bv32 == blastFlag))) || (2bv32 == blastFlag && s__state == 4512bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 4480bv32 == s__state)) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 4400bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4448bv32) && !(5bv32 == blastFlag))) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 3bv32)) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32)) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && !(s__hit == 0bv32)) && s__state == 4352bv32)) || ((!(s__s3__tmp__next_state___0 == 4384bv32) && !(3bv32 == blastFlag)) && s__state == 3bv32)) || (1bv32 == blastFlag && s__state == 4384bv32)) || ((((!(s__s3__tmp__next_state___0 == 4384bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && s__state == 4400bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__state == 4528bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__state == 4496bv32) && s__hit == 0bv32) && !(5bv32 == blastFlag))) || (((!(3bv32 == blastFlag) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4512bv32)) || (2bv32 == blastFlag && s__state == 4528bv32) - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 163]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || (((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 208]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 145]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 0bv32 == blastFlag && s__state == 12292bv32 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || ((!(s__state == 4400bv32) && ((2bv32 == blastFlag && s__state == 4560bv32) || (((((((((((!(s__s3__tmp__next_state___0 == 4384bv32) && !(s__state == 4368bv32)) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)))) && !(s__hit == 0bv32)) - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || (((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((((((((((((!(s__s3__tmp__next_state___0 == 4384bv32) && !(s__state == 4368bv32)) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) || (((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32)) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4385bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && !(s__state == 4384bv32) - InvariantResult [Line: 578]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: (((!(3bv32 == blastFlag) && s__hit == 0bv32) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && !(s__hit == 0bv32)) && s__state == 4352bv32) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:27:30,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a5e26fb-d9df-4760-b664-ac3b7c73bece/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...