./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS --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 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:53:13,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:53:13,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:53:13,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:53:13,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:53:13,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:53:13,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:53:13,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:53:13,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:53:13,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:53:13,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:53:13,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:53:13,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:53:13,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:53:13,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:53:13,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:53:13,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:53:13,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:53:13,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:53:13,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:53:13,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:53:13,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:53:13,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:53:13,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:53:13,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:53:13,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:53:13,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:53:13,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:53:13,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:53:13,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:53:13,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:53:13,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:53:13,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:53:13,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:53:13,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:53:13,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:53:13,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:53:13,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:53:13,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:53:13,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:53:13,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:53:13,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:53:13,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:53:13,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:53:13,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:53:13,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:53:13,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:53:13,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:53:13,932 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:53:13,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:53:13,932 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:53:13,933 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:53:13,933 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:53:13,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:53:13,933 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:53:13,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:53:13,934 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:53:13,934 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:53:13,934 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:53:13,935 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:53:13,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:53:13,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:53:13,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:53:13,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:53:13,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:53:13,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:53:13,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:53:13,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:53:13,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:53:13,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:53:13,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:53:13,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:53:13,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:53:13,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:53:13,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:13,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:53:13,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:53:13,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:53:13,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:53:13,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:53:13,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:53:13,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:53:13,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:53:13,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 [2022-11-19 07:53:14,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:53:14,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:53:14,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:53:14,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:53:14,302 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:53:14,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-11-19 07:53:14,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/205c7665c/7f47241429cc4bb29ca2c172b8eed480/FLAGc806d6b80 [2022-11-19 07:53:15,228 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:53:15,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-11-19 07:53:15,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/205c7665c/7f47241429cc4bb29ca2c172b8eed480/FLAGc806d6b80 [2022-11-19 07:53:15,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/205c7665c/7f47241429cc4bb29ca2c172b8eed480 [2022-11-19 07:53:15,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:53:15,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:53:15,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:15,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:53:15,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:53:15,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:15" (1/1) ... [2022-11-19 07:53:15,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f181fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:15, skipping insertion in model container [2022-11-19 07:53:15,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:15" (1/1) ... [2022-11-19 07:53:15,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:53:15,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:53:15,896 WARN L234 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_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-11-19 07:53:16,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:16,347 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:53:16,398 WARN L234 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_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-11-19 07:53:16,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:16,582 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:53:16,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16 WrapperNode [2022-11-19 07:53:16,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:16,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:16,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:53:16,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:53:16,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,793 INFO L138 Inliner]: procedures = 137, calls = 246, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1139 [2022-11-19 07:53:16,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:16,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:53:16,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:53:16,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:53:16,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:53:16,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:53:16,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:53:16,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:53:16,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (1/1) ... [2022-11-19 07:53:16,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:16,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:53:16,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:53:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:53:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:53:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:53:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:53:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:53:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:53:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:53:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:53:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:53:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:53:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:53:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:53:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:53:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:53:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:53:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:53:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:53:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:53:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:53:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:53:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:53:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:53:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:53:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:53:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:53:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:53:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:53:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:53:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:53:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:53:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:53:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:53:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:53:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:53:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:53:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:53:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:53:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:53:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:53:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:53:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:53:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:53:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:53:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:53:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:53:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:53:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:53:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:53:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:53:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:53:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:53:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:53:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:53:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:53:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:53:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:53:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:53:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:53:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:53:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:53:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:53:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:53:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:53:17,400 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:53:17,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:53:18,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:53:19,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:53:19,754 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:53:19,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:19 BoogieIcfgContainer [2022-11-19 07:53:19,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:53:19,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:53:19,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:53:19,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:53:19,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:15" (1/3) ... [2022-11-19 07:53:19,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16144e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:19, skipping insertion in model container [2022-11-19 07:53:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:16" (2/3) ... [2022-11-19 07:53:19,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16144e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:19, skipping insertion in model container [2022-11-19 07:53:19,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:19" (3/3) ... [2022-11-19 07:53:19,777 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2022-11-19 07:53:19,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:53:19,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:53:19,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:53:19,907 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3185042a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:53:19,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:53:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-19 07:53:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:53:19,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:19,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:19,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:19,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash -312548297, now seen corresponding path program 1 times [2022-11-19 07:53:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:19,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218008231] [2022-11-19 07:53:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:53:20,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218008231] [2022-11-19 07:53:20,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218008231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:20,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:20,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:53:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894960658] [2022-11-19 07:53:20,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:53:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:20,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:53:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:53:20,653 INFO L87 Difference]: Start difference. First operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:53:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:20,958 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2022-11-19 07:53:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:53:20,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-11-19 07:53:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:20,987 INFO L225 Difference]: With dead ends: 386 [2022-11-19 07:53:20,987 INFO L226 Difference]: Without dead ends: 236 [2022-11-19 07:53:21,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:53:21,012 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:21,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:53:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-19 07:53:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-19 07:53:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-19 07:53:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2022-11-19 07:53:21,098 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 101 [2022-11-19 07:53:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:21,100 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2022-11-19 07:53:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:53:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2022-11-19 07:53:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 07:53:21,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:21,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:53:21,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash 810447702, now seen corresponding path program 1 times [2022-11-19 07:53:21,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525444937] [2022-11-19 07:53:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:21,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:53:21,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525444937] [2022-11-19 07:53:21,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525444937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:21,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:21,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629710400] [2022-11-19 07:53:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:21,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:21,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:21,545 INFO L87 Difference]: Start difference. First operand 236 states and 313 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:53:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:21,737 INFO L93 Difference]: Finished difference Result 382 states and 496 transitions. [2022-11-19 07:53:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 113 [2022-11-19 07:53:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:21,741 INFO L225 Difference]: With dead ends: 382 [2022-11-19 07:53:21,742 INFO L226 Difference]: Without dead ends: 238 [2022-11-19 07:53:21,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:21,751 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:21,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:53:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-19 07:53:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-19 07:53:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 138 states have internal predecessors, (168), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-19 07:53:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2022-11-19 07:53:21,805 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 113 [2022-11-19 07:53:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:21,808 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2022-11-19 07:53:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:53:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2022-11-19 07:53:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 07:53:21,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:21,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:21,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:53:21,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1940089383, now seen corresponding path program 1 times [2022-11-19 07:53:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:21,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187568525] [2022-11-19 07:53:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:53:22,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187568525] [2022-11-19 07:53:22,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187568525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:22,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:22,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:53:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60260759] [2022-11-19 07:53:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:22,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:53:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:53:22,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:22,021 INFO L87 Difference]: Start difference. First operand 238 states and 315 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:53:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:22,211 INFO L93 Difference]: Finished difference Result 511 states and 697 transitions. [2022-11-19 07:53:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:53:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 118 [2022-11-19 07:53:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:22,215 INFO L225 Difference]: With dead ends: 511 [2022-11-19 07:53:22,215 INFO L226 Difference]: Without dead ends: 291 [2022-11-19 07:53:22,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:53:22,217 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 59 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:22,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 549 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:53:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-19 07:53:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2022-11-19 07:53:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 172 states have internal predecessors, (223), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-19 07:53:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2022-11-19 07:53:22,264 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 118 [2022-11-19 07:53:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:22,265 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2022-11-19 07:53:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:53:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2022-11-19 07:53:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:53:22,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:22,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:22,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:53:22,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1877930128, now seen corresponding path program 1 times [2022-11-19 07:53:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:22,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936873236] [2022-11-19 07:53:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:53:22,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936873236] [2022-11-19 07:53:22,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936873236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:53:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214777727] [2022-11-19 07:53:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:22,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:22,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:22,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:53:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:23,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:53:23,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:53:23,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:53:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:53:23,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214777727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:53:23,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829830992] [2022-11-19 07:53:23,487 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-19 07:53:23,488 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:53:23,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:53:23,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:53:23,505 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:54:11,335 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:54:11,683 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 476 for LOIs [2022-11-19 07:54:23,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:54:24,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:24,018 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-19 07:54:24,035 INFO L158 Benchmark]: Toolchain (without parser) took 68583.85ms. Allocated memory was 125.8MB in the beginning and 673.2MB in the end (delta: 547.4MB). Free memory was 91.1MB in the beginning and 383.1MB in the end (delta: -291.9MB). Peak memory consumption was 411.6MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,035 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:54:24,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1133.93ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 73.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 212.05ms. Allocated memory is still 125.8MB. Free memory was 73.7MB in the beginning and 66.7MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,037 INFO L158 Benchmark]: Boogie Preprocessor took 130.18ms. Allocated memory is still 125.8MB. Free memory was 66.7MB in the beginning and 61.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,037 INFO L158 Benchmark]: RCFGBuilder took 2831.40ms. Allocated memory was 125.8MB in the beginning and 190.8MB in the end (delta: 65.0MB). Free memory was 61.1MB in the beginning and 113.9MB in the end (delta: -52.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,038 INFO L158 Benchmark]: TraceAbstraction took 64265.44ms. Allocated memory was 190.8MB in the beginning and 673.2MB in the end (delta: 482.3MB). Free memory was 112.9MB in the beginning and 383.1MB in the end (delta: -270.2MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. [2022-11-19 07:54:24,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1133.93ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 73.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 212.05ms. Allocated memory is still 125.8MB. Free memory was 73.7MB in the beginning and 66.7MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 130.18ms. Allocated memory is still 125.8MB. Free memory was 66.7MB in the beginning and 61.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2831.40ms. Allocated memory was 125.8MB in the beginning and 190.8MB in the end (delta: 65.0MB). Free memory was 61.1MB in the beginning and 113.9MB in the end (delta: -52.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. * TraceAbstraction took 64265.44ms. Allocated memory was 190.8MB in the beginning and 673.2MB in the end (delta: 482.3MB). Free memory was 112.9MB in the beginning and 383.1MB in the end (delta: -270.2MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:54:24,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS --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 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:54:26,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:54:26,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:54:26,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:54:26,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:54:26,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:54:26,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:54:26,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:54:26,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:54:26,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:54:26,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:54:26,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:54:26,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:54:26,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:54:26,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:54:26,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:54:26,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:54:26,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:54:26,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:54:26,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:54:26,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:54:26,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:54:26,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:54:26,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:54:26,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:54:26,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:54:26,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:54:26,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:54:26,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:54:26,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:54:26,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:54:26,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:54:26,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:54:26,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:54:26,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:54:26,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:54:26,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:54:26,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:54:26,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:54:26,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:54:26,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:54:26,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:54:26,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:54:26,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:54:26,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:54:26,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:54:26,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:54:26,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:54:26,766 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:54:26,767 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:54:26,767 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:54:26,767 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:54:26,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:54:26,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:54:26,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:54:26,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:54:26,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:54:26,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:54:26,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:54:26,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:54:26,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:54:26,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:54:26,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:54:26,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:54:26,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:54:26,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:54:26,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:54:26,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:54:26,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:54:26,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:54:26,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:54:26,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:26,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:54:26,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:54:26,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:54:26,777 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:54:26,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:54:26,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:54:26,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:54:26,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:54:26,778 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_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 [2022-11-19 07:54:27,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:54:27,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:54:27,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:54:27,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:54:27,312 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:54:27,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-11-19 07:54:27,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/40a9c51d4/03e6df4ddf6c46e4898fe336e0620bbc/FLAGc1a3916ae [2022-11-19 07:54:28,246 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:54:28,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-11-19 07:54:28,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/40a9c51d4/03e6df4ddf6c46e4898fe336e0620bbc/FLAGc1a3916ae [2022-11-19 07:54:28,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/data/40a9c51d4/03e6df4ddf6c46e4898fe336e0620bbc [2022-11-19 07:54:28,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:54:28,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:54:28,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:28,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:54:28,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:54:28,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:28" (1/1) ... [2022-11-19 07:54:28,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cee3af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28, skipping insertion in model container [2022-11-19 07:54:28,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:28" (1/1) ... [2022-11-19 07:54:28,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:54:28,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:28,864 WARN L234 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_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-11-19 07:54:29,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:29,350 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:54:29,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:29,407 WARN L234 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_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-11-19 07:54:29,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:29,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:54:29,588 WARN L234 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_80689ed6-ba3f-403c-b1ac-962332395885/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-11-19 07:54:29,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:29,732 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:54:29,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29 WrapperNode [2022-11-19 07:54:29,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:29,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:29,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:54:29,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:54:29,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,871 INFO L138 Inliner]: procedures = 139, calls = 246, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1074 [2022-11-19 07:54:29,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:29,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:54:29,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:54:29,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:54:29,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:54:29,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:54:29,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:54:29,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:54:29,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (1/1) ... [2022-11-19 07:54:29,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:30,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:54:30,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:54:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:54:30,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:54:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:54:30,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:54:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:54:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:54:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:54:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:54:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:54:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:54:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:54:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:54:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:54:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:54:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:54:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:54:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:54:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:54:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:54:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:54:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:54:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:54:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:54:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:54:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:54:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:54:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:54:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:54:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:54:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:54:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:54:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:54:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:54:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:54:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:54:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:54:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:54:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:54:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:54:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:54:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:54:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:54:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:54:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:54:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:54:30,093 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:54:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:54:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:54:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:54:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:54:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:54:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:54:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:54:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:54:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:54:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:54:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:54:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:54:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:54:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:54:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:54:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:54:30,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:54:30,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:54:30,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:54:31,968 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:54:31,986 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:54:31,990 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:54:31,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:31 BoogieIcfgContainer [2022-11-19 07:54:31,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:54:32,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:54:32,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:54:32,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:54:32,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:28" (1/3) ... [2022-11-19 07:54:32,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351478d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:32, skipping insertion in model container [2022-11-19 07:54:32,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29" (2/3) ... [2022-11-19 07:54:32,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351478d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:32, skipping insertion in model container [2022-11-19 07:54:32,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:31" (3/3) ... [2022-11-19 07:54:32,008 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2022-11-19 07:54:32,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:54:32,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:54:32,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:54:32,161 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73c6091f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:54:32,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:54:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 463 states, 358 states have (on average 1.5363128491620113) internal successors, (550), 363 states have internal predecessors, (550), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-19 07:54:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-19 07:54:32,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:32,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:32,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1703542870, now seen corresponding path program 1 times [2022-11-19 07:54:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:32,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451350382] [2022-11-19 07:54:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:32,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:32,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:32,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:54:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:32,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:54:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-19 07:54:33,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:33,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:33,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451350382] [2022-11-19 07:54:33,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451350382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:33,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:54:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429275566] [2022-11-19 07:54:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:33,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:54:33,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:54:33,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:54:33,076 INFO L87 Difference]: Start difference. First operand has 463 states, 358 states have (on average 1.5363128491620113) internal successors, (550), 363 states have internal predecessors, (550), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:54:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:33,165 INFO L93 Difference]: Finished difference Result 728 states and 1078 transitions. [2022-11-19 07:54:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:54:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 177 [2022-11-19 07:54:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:33,203 INFO L225 Difference]: With dead ends: 728 [2022-11-19 07:54:33,213 INFO L226 Difference]: Without dead ends: 456 [2022-11-19 07:54:33,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:54:33,232 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:33,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-19 07:54:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-11-19 07:54:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 352 states have (on average 1.53125) internal successors, (539), 356 states have internal predecessors, (539), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-19 07:54:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 686 transitions. [2022-11-19 07:54:33,362 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 686 transitions. Word has length 177 [2022-11-19 07:54:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:33,364 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 686 transitions. [2022-11-19 07:54:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:54:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 686 transitions. [2022-11-19 07:54:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-19 07:54:33,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:33,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:33,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:33,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:33,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1047783582, now seen corresponding path program 1 times [2022-11-19 07:54:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:33,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319605122] [2022-11-19 07:54:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:33,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:33,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:54:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:54:34,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-19 07:54:34,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:34,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319605122] [2022-11-19 07:54:34,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319605122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:34,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:34,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220428303] [2022-11-19 07:54:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:34,301 INFO L87 Difference]: Start difference. First operand 456 states and 686 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 07:54:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:34,545 INFO L93 Difference]: Finished difference Result 903 states and 1362 transitions. [2022-11-19 07:54:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 178 [2022-11-19 07:54:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:34,559 INFO L225 Difference]: With dead ends: 903 [2022-11-19 07:54:34,560 INFO L226 Difference]: Without dead ends: 458 [2022-11-19 07:54:34,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:34,566 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 160 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:34,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2525 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-19 07:54:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2022-11-19 07:54:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 353 states have (on average 1.5297450424929178) internal successors, (540), 358 states have internal predecessors, (540), 74 states have call successors, (74), 29 states have call predecessors, (74), 30 states have return successors, (75), 72 states have call predecessors, (75), 73 states have call successors, (75) [2022-11-19 07:54:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 689 transitions. [2022-11-19 07:54:34,641 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 689 transitions. Word has length 178 [2022-11-19 07:54:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:34,644 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 689 transitions. [2022-11-19 07:54:34,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 07:54:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 689 transitions. [2022-11-19 07:54:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 07:54:34,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:34,655 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:34,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:34,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -691175487, now seen corresponding path program 1 times [2022-11-19 07:54:34,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:34,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789409537] [2022-11-19 07:54:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:34,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:34,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:34,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:54:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:35,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:35,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 07:54:35,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:35,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789409537] [2022-11-19 07:54:35,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789409537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:35,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:35,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142076687] [2022-11-19 07:54:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:35,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:35,522 INFO L87 Difference]: Start difference. First operand 458 states and 689 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:35,718 INFO L93 Difference]: Finished difference Result 905 states and 1366 transitions. [2022-11-19 07:54:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 160 [2022-11-19 07:54:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:35,724 INFO L225 Difference]: With dead ends: 905 [2022-11-19 07:54:35,724 INFO L226 Difference]: Without dead ends: 460 [2022-11-19 07:54:35,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:35,730 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 159 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:35,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2514 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-19 07:54:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-11-19 07:54:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 354 states have (on average 1.5282485875706215) internal successors, (541), 360 states have internal predecessors, (541), 74 states have call successors, (74), 29 states have call predecessors, (74), 31 states have return successors, (79), 72 states have call predecessors, (79), 73 states have call successors, (79) [2022-11-19 07:54:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 694 transitions. [2022-11-19 07:54:35,788 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 694 transitions. Word has length 160 [2022-11-19 07:54:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:35,790 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 694 transitions. [2022-11-19 07:54:35,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 694 transitions. [2022-11-19 07:54:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 07:54:35,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:35,801 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:35,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:36,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:36,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1085698772, now seen corresponding path program 1 times [2022-11-19 07:54:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057398519] [2022-11-19 07:54:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:36,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:36,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:36,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:36,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:54:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:54:36,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 07:54:36,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:36,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057398519] [2022-11-19 07:54:36,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057398519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:36,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:36,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578862797] [2022-11-19 07:54:36,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:36,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:36,556 INFO L87 Difference]: Start difference. First operand 460 states and 694 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:36,678 INFO L93 Difference]: Finished difference Result 897 states and 1356 transitions. [2022-11-19 07:54:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2022-11-19 07:54:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:36,683 INFO L225 Difference]: With dead ends: 897 [2022-11-19 07:54:36,683 INFO L226 Difference]: Without dead ends: 460 [2022-11-19 07:54:36,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:36,687 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 158 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:36,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2528 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-19 07:54:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-11-19 07:54:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 354 states have (on average 1.5282485875706215) internal successors, (541), 360 states have internal predecessors, (541), 74 states have call successors, (74), 29 states have call predecessors, (74), 31 states have return successors, (78), 72 states have call predecessors, (78), 73 states have call successors, (78) [2022-11-19 07:54:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 693 transitions. [2022-11-19 07:54:36,727 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 693 transitions. Word has length 161 [2022-11-19 07:54:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:36,727 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 693 transitions. [2022-11-19 07:54:36,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 693 transitions. [2022-11-19 07:54:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 07:54:36,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:36,733 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:36,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:36,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash 883242904, now seen corresponding path program 2 times [2022-11-19 07:54:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682082014] [2022-11-19 07:54:36,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:54:36,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:36,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:36,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:54:37,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 07:54:37,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:54:37,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 07:54:37,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:37,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:37,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682082014] [2022-11-19 07:54:37,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682082014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:37,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:37,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:54:37,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603905946] [2022-11-19 07:54:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:37,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:54:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:54:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:37,335 INFO L87 Difference]: Start difference. First operand 460 states and 693 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:54:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:37,381 INFO L93 Difference]: Finished difference Result 722 states and 1063 transitions. [2022-11-19 07:54:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:54:37,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2022-11-19 07:54:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:37,385 INFO L225 Difference]: With dead ends: 722 [2022-11-19 07:54:37,386 INFO L226 Difference]: Without dead ends: 463 [2022-11-19 07:54:37,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:37,388 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:37,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1366 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-19 07:54:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 462. [2022-11-19 07:54:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 356 states have (on average 1.5252808988764044) internal successors, (543), 362 states have internal predecessors, (543), 74 states have call successors, (74), 29 states have call predecessors, (74), 31 states have return successors, (78), 72 states have call predecessors, (78), 73 states have call successors, (78) [2022-11-19 07:54:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 695 transitions. [2022-11-19 07:54:37,424 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 695 transitions. Word has length 162 [2022-11-19 07:54:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:37,425 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 695 transitions. [2022-11-19 07:54:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:54:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 695 transitions. [2022-11-19 07:54:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-19 07:54:37,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:37,430 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:37,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:37,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:37,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1827211759, now seen corresponding path program 1 times [2022-11-19 07:54:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099676060] [2022-11-19 07:54:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:37,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:37,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:37,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:54:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:38,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:54:38,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-19 07:54:38,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:38,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099676060] [2022-11-19 07:54:38,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099676060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:38,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:38,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:38,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876366699] [2022-11-19 07:54:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:38,206 INFO L87 Difference]: Start difference. First operand 462 states and 695 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:38,327 INFO L93 Difference]: Finished difference Result 903 states and 1363 transitions. [2022-11-19 07:54:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 171 [2022-11-19 07:54:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:38,332 INFO L225 Difference]: With dead ends: 903 [2022-11-19 07:54:38,332 INFO L226 Difference]: Without dead ends: 464 [2022-11-19 07:54:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:38,335 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 156 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:38,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2530 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-19 07:54:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-11-19 07:54:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 357 states have (on average 1.5238095238095237) internal successors, (544), 364 states have internal predecessors, (544), 74 states have call successors, (74), 29 states have call predecessors, (74), 32 states have return successors, (80), 72 states have call predecessors, (80), 73 states have call successors, (80) [2022-11-19 07:54:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 698 transitions. [2022-11-19 07:54:38,372 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 698 transitions. Word has length 171 [2022-11-19 07:54:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:38,373 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 698 transitions. [2022-11-19 07:54:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 698 transitions. [2022-11-19 07:54:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-19 07:54:38,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:38,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:38,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:38,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:38,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1899962077, now seen corresponding path program 1 times [2022-11-19 07:54:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:38,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287056023] [2022-11-19 07:54:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:38,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:38,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:54:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:39,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 07:54:39,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:39,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:39,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287056023] [2022-11-19 07:54:39,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287056023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:39,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:39,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583883589] [2022-11-19 07:54:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:39,190 INFO L87 Difference]: Start difference. First operand 464 states and 698 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 07:54:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:39,342 INFO L93 Difference]: Finished difference Result 901 states and 1358 transitions. [2022-11-19 07:54:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:39,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 191 [2022-11-19 07:54:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:39,351 INFO L225 Difference]: With dead ends: 901 [2022-11-19 07:54:39,351 INFO L226 Difference]: Without dead ends: 464 [2022-11-19 07:54:39,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:39,358 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 157 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:39,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2517 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-19 07:54:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-11-19 07:54:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 357 states have (on average 1.5238095238095237) internal successors, (544), 364 states have internal predecessors, (544), 74 states have call successors, (74), 29 states have call predecessors, (74), 32 states have return successors, (79), 72 states have call predecessors, (79), 73 states have call successors, (79) [2022-11-19 07:54:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 697 transitions. [2022-11-19 07:54:39,403 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 697 transitions. Word has length 191 [2022-11-19 07:54:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:39,404 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 697 transitions. [2022-11-19 07:54:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 07:54:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 697 transitions. [2022-11-19 07:54:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-19 07:54:39,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:39,409 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:39,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:39,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1293840641, now seen corresponding path program 1 times [2022-11-19 07:54:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704678538] [2022-11-19 07:54:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:39,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:39,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:54:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:40,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:40,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-19 07:54:40,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:40,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704678538] [2022-11-19 07:54:40,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704678538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:40,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:40,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:54:40,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814902467] [2022-11-19 07:54:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:54:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:54:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:40,204 INFO L87 Difference]: Start difference. First operand 464 states and 697 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:40,384 INFO L93 Difference]: Finished difference Result 903 states and 1363 transitions. [2022-11-19 07:54:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:54:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 173 [2022-11-19 07:54:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:40,388 INFO L225 Difference]: With dead ends: 903 [2022-11-19 07:54:40,389 INFO L226 Difference]: Without dead ends: 466 [2022-11-19 07:54:40,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:40,392 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 155 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:40,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2519 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-19 07:54:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2022-11-19 07:54:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 358 states have (on average 1.5223463687150838) internal successors, (545), 366 states have internal predecessors, (545), 74 states have call successors, (74), 29 states have call predecessors, (74), 33 states have return successors, (83), 72 states have call predecessors, (83), 73 states have call successors, (83) [2022-11-19 07:54:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 702 transitions. [2022-11-19 07:54:40,429 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 702 transitions. Word has length 173 [2022-11-19 07:54:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:40,430 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 702 transitions. [2022-11-19 07:54:40,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 702 transitions. [2022-11-19 07:54:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-19 07:54:40,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:40,435 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:40,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:40,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1136193427, now seen corresponding path program 1 times [2022-11-19 07:54:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928152247] [2022-11-19 07:54:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:40,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:54:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:41,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:54:41,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:54:41,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:41,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928152247] [2022-11-19 07:54:41,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928152247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:41,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:41,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:54:41,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754964615] [2022-11-19 07:54:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:54:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:54:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:41,177 INFO L87 Difference]: Start difference. First operand 466 states and 702 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:54:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:41,287 INFO L93 Difference]: Finished difference Result 981 states and 1498 transitions. [2022-11-19 07:54:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:54:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2022-11-19 07:54:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:41,292 INFO L225 Difference]: With dead ends: 981 [2022-11-19 07:54:41,292 INFO L226 Difference]: Without dead ends: 546 [2022-11-19 07:54:41,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:41,296 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 142 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:41,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-19 07:54:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 538. [2022-11-19 07:54:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 416 states have (on average 1.5432692307692308) internal successors, (642), 424 states have internal predecessors, (642), 88 states have call successors, (88), 29 states have call predecessors, (88), 33 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2022-11-19 07:54:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 829 transitions. [2022-11-19 07:54:41,385 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 829 transitions. Word has length 174 [2022-11-19 07:54:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 829 transitions. [2022-11-19 07:54:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:54:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 829 transitions. [2022-11-19 07:54:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-19 07:54:41,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:41,394 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:41,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-19 07:54:41,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:41,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1646463607, now seen corresponding path program 1 times [2022-11-19 07:54:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500046105] [2022-11-19 07:54:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:41,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:41,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:54:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:42,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:54:42,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 07:54:42,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:42,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:42,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500046105] [2022-11-19 07:54:42,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500046105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:42,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:42,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:54:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38043407] [2022-11-19 07:54:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:42,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:54:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:54:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:54:42,219 INFO L87 Difference]: Start difference. First operand 538 states and 829 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:42,522 INFO L93 Difference]: Finished difference Result 1232 states and 1928 transitions. [2022-11-19 07:54:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:54:42,523 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), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 175 [2022-11-19 07:54:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:42,529 INFO L225 Difference]: With dead ends: 1232 [2022-11-19 07:54:42,529 INFO L226 Difference]: Without dead ends: 723 [2022-11-19 07:54:42,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:54:42,533 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 811 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:42,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1562 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-19 07:54:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 546. [2022-11-19 07:54:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 423 states have (on average 1.5319148936170213) internal successors, (648), 430 states have internal predecessors, (648), 88 states have call successors, (88), 31 states have call predecessors, (88), 34 states have return successors, (95), 86 states have call predecessors, (95), 87 states have call successors, (95) [2022-11-19 07:54:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 831 transitions. [2022-11-19 07:54:42,612 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 831 transitions. Word has length 175 [2022-11-19 07:54:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:42,613 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 831 transitions. [2022-11-19 07:54:42,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:54:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 831 transitions. [2022-11-19 07:54:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-19 07:54:42,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:42,619 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:42,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:42,838 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:54:42,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 366811644, now seen corresponding path program 1 times [2022-11-19 07:54:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:54:42,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641258281] [2022-11-19 07:54:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:42,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:54:42,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:54:42,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:54:42,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:54:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:43,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:54:43,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:54:43,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:54:43,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:43,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641258281] [2022-11-19 07:54:43,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641258281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:43,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [202981319] [2022-11-19 07:54:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:43,530 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:54:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:54:43,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:54:43,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:54:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:44,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:54:44,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:54:44,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-19 07:54:45,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [202981319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119227939] [2022-11-19 07:54:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:45,011 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:45,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:54:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:45,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:54:45,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:54:45,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-19 07:54:45,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119227939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:45,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:54:45,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-19 07:54:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336868828] [2022-11-19 07:54:45,927 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:45,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:54:45,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:54:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:54:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:54:45,932 INFO L87 Difference]: Start difference. First operand 546 states and 831 transitions. Second operand has 20 states, 20 states have (on average 11.45) internal successors, (229), 18 states have internal predecessors, (229), 4 states have call successors, (53), 6 states have call predecessors, (53), 9 states have return successors, (48), 6 states have call predecessors, (48), 4 states have call successors, (48) [2022-11-19 07:55:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:00,490 INFO L93 Difference]: Finished difference Result 2802 states and 4551 transitions. [2022-11-19 07:55:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 07:55:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.45) internal successors, (229), 18 states have internal predecessors, (229), 4 states have call successors, (53), 6 states have call predecessors, (53), 9 states have return successors, (48), 6 states have call predecessors, (48), 4 states have call successors, (48) Word has length 176 [2022-11-19 07:55:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:00,508 INFO L225 Difference]: With dead ends: 2802 [2022-11-19 07:55:00,508 INFO L226 Difference]: Without dead ends: 2543 [2022-11-19 07:55:00,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 07:55:00,513 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 5979 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 8120 mSolverCounterSat, 1632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6081 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 9752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1632 IncrementalHoareTripleChecker+Valid, 8120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:00,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6081 Valid, 4697 Invalid, 9752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1632 Valid, 8120 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-19 07:55:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2022-11-19 07:55:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1957. [2022-11-19 07:55:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1555 states have (on average 1.5884244372990353) internal successors, (2470), 1568 states have internal predecessors, (2470), 332 states have call successors, (332), 61 states have call predecessors, (332), 69 states have return successors, (396), 331 states have call predecessors, (396), 330 states have call successors, (396) [2022-11-19 07:55:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3198 transitions. [2022-11-19 07:55:00,903 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3198 transitions. Word has length 176 [2022-11-19 07:55:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:00,903 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3198 transitions. [2022-11-19 07:55:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.45) internal successors, (229), 18 states have internal predecessors, (229), 4 states have call successors, (53), 6 states have call predecessors, (53), 9 states have return successors, (48), 6 states have call predecessors, (48), 4 states have call successors, (48) [2022-11-19 07:55:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3198 transitions. [2022-11-19 07:55:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-19 07:55:00,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:00,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:00,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:01,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:01,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-19 07:55:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:01,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2038538896, now seen corresponding path program 1 times [2022-11-19 07:55:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587404386] [2022-11-19 07:55:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:01,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:01,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 07:55:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:02,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-19 07:55:02,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:02,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:02,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587404386] [2022-11-19 07:55:02,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587404386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:02,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:02,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627015912] [2022-11-19 07:55:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:02,084 INFO L87 Difference]: Start difference. First operand 1957 states and 3198 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:02,677 INFO L93 Difference]: Finished difference Result 4607 states and 7679 transitions. [2022-11-19 07:55:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 198 [2022-11-19 07:55:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:02,702 INFO L225 Difference]: With dead ends: 4607 [2022-11-19 07:55:02,702 INFO L226 Difference]: Without dead ends: 2803 [2022-11-19 07:55:02,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:02,711 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 136 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:02,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1382 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-11-19 07:55:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2787. [2022-11-19 07:55:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2227 states have (on average 1.6120341266277503) internal successors, (3590), 2240 states have internal predecessors, (3590), 490 states have call successors, (490), 61 states have call predecessors, (490), 69 states have return successors, (594), 489 states have call predecessors, (594), 488 states have call successors, (594) [2022-11-19 07:55:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4674 transitions. [2022-11-19 07:55:03,286 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4674 transitions. Word has length 198 [2022-11-19 07:55:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:03,287 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4674 transitions. [2022-11-19 07:55:03,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4674 transitions. [2022-11-19 07:55:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-19 07:55:03,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:03,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:03,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-19 07:55:03,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:03,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1120310819, now seen corresponding path program 1 times [2022-11-19 07:55:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:03,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844759134] [2022-11-19 07:55:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:03,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:03,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:03,528 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:03,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:55:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:03,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:03,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-19 07:55:03,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:03,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:03,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844759134] [2022-11-19 07:55:03,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844759134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:03,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:03,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550792059] [2022-11-19 07:55:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:03,997 INFO L87 Difference]: Start difference. First operand 2787 states and 4674 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:04,889 INFO L93 Difference]: Finished difference Result 6675 states and 11295 transitions. [2022-11-19 07:55:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:04,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 199 [2022-11-19 07:55:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:04,921 INFO L225 Difference]: With dead ends: 6675 [2022-11-19 07:55:04,922 INFO L226 Difference]: Without dead ends: 4147 [2022-11-19 07:55:04,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:04,939 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 134 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:04,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1381 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-11-19 07:55:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 4131. [2022-11-19 07:55:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 3333 states have (on average 1.6213621362136215) internal successors, (5404), 3346 states have internal predecessors, (5404), 728 states have call successors, (728), 61 states have call predecessors, (728), 69 states have return successors, (864), 727 states have call predecessors, (864), 726 states have call successors, (864) [2022-11-19 07:55:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 6996 transitions. [2022-11-19 07:55:05,913 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 6996 transitions. Word has length 199 [2022-11-19 07:55:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:05,913 INFO L495 AbstractCegarLoop]: Abstraction has 4131 states and 6996 transitions. [2022-11-19 07:55:05,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 6996 transitions. [2022-11-19 07:55:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 07:55:05,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:05,942 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:05,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:06,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1007897229, now seen corresponding path program 1 times [2022-11-19 07:55:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:06,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712858843] [2022-11-19 07:55:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:06,158 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:06,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 07:55:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:06,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:06,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:55:06,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:06,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:06,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712858843] [2022-11-19 07:55:06,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712858843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:06,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:06,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:06,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261886919] [2022-11-19 07:55:06,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:06,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:06,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:06,607 INFO L87 Difference]: Start difference. First operand 4131 states and 6996 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:55:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:08,136 INFO L93 Difference]: Finished difference Result 9823 states and 16803 transitions. [2022-11-19 07:55:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:08,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2022-11-19 07:55:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:08,179 INFO L225 Difference]: With dead ends: 9823 [2022-11-19 07:55:08,179 INFO L226 Difference]: Without dead ends: 6217 [2022-11-19 07:55:08,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:08,194 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 132 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:08,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1368 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2022-11-19 07:55:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 6201. [2022-11-19 07:55:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6201 states, 5079 states have (on average 1.6286670604449696) internal successors, (8272), 5092 states have internal predecessors, (8272), 1052 states have call successors, (1052), 61 states have call predecessors, (1052), 69 states have return successors, (1272), 1051 states have call predecessors, (1272), 1050 states have call successors, (1272) [2022-11-19 07:55:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 10596 transitions. [2022-11-19 07:55:09,999 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 10596 transitions. Word has length 181 [2022-11-19 07:55:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:10,000 INFO L495 AbstractCegarLoop]: Abstraction has 6201 states and 10596 transitions. [2022-11-19 07:55:10,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:55:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 10596 transitions. [2022-11-19 07:55:10,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-19 07:55:10,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:10,049 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:10,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:10,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:10,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:10,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:10,270 INFO L85 PathProgramCache]: Analyzing trace with hash -494479533, now seen corresponding path program 1 times [2022-11-19 07:55:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:10,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002209757] [2022-11-19 07:55:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:10,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:10,272 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:55:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:10,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:55:10,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:10,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:10,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002209757] [2022-11-19 07:55:10,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002209757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:10,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244628326] [2022-11-19 07:55:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:10,727 INFO L87 Difference]: Start difference. First operand 6201 states and 10596 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:55:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:12,631 INFO L93 Difference]: Finished difference Result 14815 states and 25551 transitions. [2022-11-19 07:55:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2022-11-19 07:55:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:12,702 INFO L225 Difference]: With dead ends: 14815 [2022-11-19 07:55:12,702 INFO L226 Difference]: Without dead ends: 9571 [2022-11-19 07:55:12,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:12,726 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 130 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:12,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1368 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9571 states. [2022-11-19 07:55:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9571 to 9555. [2022-11-19 07:55:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9555 states, 7943 states have (on average 1.6338914767720005) internal successors, (12978), 7956 states have internal predecessors, (12978), 1542 states have call successors, (1542), 61 states have call predecessors, (1542), 69 states have return successors, (1902), 1541 states have call predecessors, (1902), 1540 states have call successors, (1902) [2022-11-19 07:55:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9555 states to 9555 states and 16422 transitions. [2022-11-19 07:55:15,076 INFO L78 Accepts]: Start accepts. Automaton has 9555 states and 16422 transitions. Word has length 182 [2022-11-19 07:55:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:15,077 INFO L495 AbstractCegarLoop]: Abstraction has 9555 states and 16422 transitions. [2022-11-19 07:55:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:55:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 9555 states and 16422 transitions. [2022-11-19 07:55:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-19 07:55:15,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:15,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:15,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:15,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1831686854, now seen corresponding path program 1 times [2022-11-19 07:55:15,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:15,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221036742] [2022-11-19 07:55:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:15,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:15,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:15,379 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:15,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 07:55:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:15,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-19 07:55:15,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:15,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:15,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221036742] [2022-11-19 07:55:15,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221036742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:15,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:15,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106137866] [2022-11-19 07:55:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:15,853 INFO L87 Difference]: Start difference. First operand 9555 states and 16422 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:18,498 INFO L93 Difference]: Finished difference Result 23155 states and 40163 transitions. [2022-11-19 07:55:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 202 [2022-11-19 07:55:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:18,578 INFO L225 Difference]: With dead ends: 23155 [2022-11-19 07:55:18,578 INFO L226 Difference]: Without dead ends: 15213 [2022-11-19 07:55:18,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:18,615 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 128 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1371 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15213 states. [2022-11-19 07:55:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15213 to 15197. [2022-11-19 07:55:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15197 states, 12599 states have (on average 1.6321930311929518) internal successors, (20564), 12612 states have internal predecessors, (20564), 2528 states have call successors, (2528), 61 states have call predecessors, (2528), 69 states have return successors, (3132), 2527 states have call predecessors, (3132), 2526 states have call successors, (3132) [2022-11-19 07:55:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 26224 transitions. [2022-11-19 07:55:21,450 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 26224 transitions. Word has length 202 [2022-11-19 07:55:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:21,451 INFO L495 AbstractCegarLoop]: Abstraction has 15197 states and 26224 transitions. [2022-11-19 07:55:21,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 26224 transitions. [2022-11-19 07:55:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-19 07:55:21,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:21,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:21,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-19 07:55:21,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:21,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1264873954, now seen corresponding path program 1 times [2022-11-19 07:55:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:21,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803045859] [2022-11-19 07:55:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:21,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:21,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 07:55:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:22,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:22,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-19 07:55:22,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:22,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803045859] [2022-11-19 07:55:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803045859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:22,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772535347] [2022-11-19 07:55:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:22,355 INFO L87 Difference]: Start difference. First operand 15197 states and 26224 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:26,719 INFO L93 Difference]: Finished difference Result 38273 states and 66413 transitions. [2022-11-19 07:55:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 203 [2022-11-19 07:55:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:26,854 INFO L225 Difference]: With dead ends: 38273 [2022-11-19 07:55:26,854 INFO L226 Difference]: Without dead ends: 25483 [2022-11-19 07:55:26,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:26,896 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 126 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:26,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1380 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25483 states. [2022-11-19 07:55:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25483 to 25467. [2022-11-19 07:55:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25467 states, 21225 states have (on average 1.632791519434629) internal successors, (34656), 21238 states have internal predecessors, (34656), 4172 states have call successors, (4172), 61 states have call predecessors, (4172), 69 states have return successors, (5076), 4171 states have call predecessors, (5076), 4170 states have call successors, (5076) [2022-11-19 07:55:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25467 states to 25467 states and 43904 transitions. [2022-11-19 07:55:31,756 INFO L78 Accepts]: Start accepts. Automaton has 25467 states and 43904 transitions. Word has length 203 [2022-11-19 07:55:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:31,757 INFO L495 AbstractCegarLoop]: Abstraction has 25467 states and 43904 transitions. [2022-11-19 07:55:31,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:55:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 25467 states and 43904 transitions. [2022-11-19 07:55:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:55:32,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:32,123 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:32,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:32,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:32,344 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:55:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1977964381, now seen corresponding path program 1 times [2022-11-19 07:55:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:32,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185307753] [2022-11-19 07:55:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:32,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:32,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:32,347 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:32,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80689ed6-ba3f-403c-b1ac-962332395885/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 07:55:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:32,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:32,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 07:55:32,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:32,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:32,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185307753] [2022-11-19 07:55:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185307753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:32,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:32,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79037551] [2022-11-19 07:55:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:32,881 INFO L87 Difference]: Start difference. First operand 25467 states and 43904 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:55:39,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:39,541 INFO L93 Difference]: Finished difference Result 61029 states and 105183 transitions. [2022-11-19 07:55:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:39,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 185 [2022-11-19 07:55:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:39,738 INFO L225 Difference]: With dead ends: 61029 [2022-11-19 07:55:39,738 INFO L226 Difference]: Without dead ends: 39965 [2022-11-19 07:55:39,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:39,801 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 124 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:39,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1344 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states.