./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI --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 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e --- 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-5e519f3 [2022-11-03 02:17:06,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:17:06,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:17:06,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:17:06,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:17:06,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:17:06,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:17:06,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:17:06,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:17:06,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:17:06,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:17:06,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:17:06,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:17:06,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:17:06,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:17:06,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:17:06,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:17:06,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:17:06,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:17:06,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:17:06,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:17:06,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:17:06,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:17:06,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:17:06,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:17:06,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:17:06,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:17:06,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:17:06,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:17:06,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:17:06,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:17:06,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:17:06,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:17:06,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:17:06,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:17:06,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:17:06,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:17:06,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:17:06,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:17:06,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:17:06,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:17:06,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:17:06,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:17:06,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:17:06,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:17:06,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:17:06,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:17:06,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:17:06,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:17:06,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:17:06,981 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:17:06,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:17:06,981 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:17:06,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:17:06,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:17:06,982 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:17:06,982 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:17:06,982 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:17:06,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:17:06,983 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:17:06,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:17:06,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:17:06,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:17:06,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:17:06,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:17:06,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:17:06,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:17:06,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:17:06,985 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:17:06,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:17:06,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:17:06,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:17:06,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:17:06,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:17:06,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:06,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:17:06,987 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:17:06,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:17:06,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:17:06,988 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:17:06,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:17:06,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:17:06,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:17:06,988 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_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e [2022-11-03 02:17:07,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:17:07,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:17:07,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:17:07,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:17:07,253 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:17:07,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-03 02:17:07,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/57ca4af12/fe2db7c386934718b60361ded76ea972/FLAGbfca5e798 [2022-11-03 02:17:07,912 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:17:07,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-03 02:17:07,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/57ca4af12/fe2db7c386934718b60361ded76ea972/FLAGbfca5e798 [2022-11-03 02:17:08,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/57ca4af12/fe2db7c386934718b60361ded76ea972 [2022-11-03 02:17:08,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:17:08,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:17:08,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:08,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:17:08,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:17:08,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:08" (1/1) ... [2022-11-03 02:17:08,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653b7018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:08, skipping insertion in model container [2022-11-03 02:17:08,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:08" (1/1) ... [2022-11-03 02:17:08,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:17:08,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:17:08,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-03 02:17:08,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:08,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:17:09,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-03 02:17:09,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:09,097 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:17:09,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09 WrapperNode [2022-11-03 02:17:09,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:09,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:09,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:17:09,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:17:09,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,259 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 987 [2022-11-03 02:17:09,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:09,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:17:09,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:17:09,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:17:09,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:17:09,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:17:09,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:17:09,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:17:09,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (1/1) ... [2022-11-03 02:17:09,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:09,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:17:09,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:17:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:17:09,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:17:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:17:09,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:17:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:17:09,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:17:09,471 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:17:09,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:17:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:17:09,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:17:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:17:09,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:17:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:17:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:17:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:17:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:17:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:17:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:17:09,473 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:17:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:17:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:17:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:17:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:17:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:17:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:17:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:17:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:17:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:17:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:17:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:17:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:17:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:17:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:17:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:17:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:17:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:17:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:17:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:17:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:17:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:17:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:17:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:17:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:17:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:17:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:17:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:17:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:17:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:17:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:17:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:17:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:17:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:17:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:17:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:17:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:17:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:17:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:17:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:17:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:17:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:17:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:17:09,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:17:09,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:17:10,878 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:17:11,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:17:11,559 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:17:11,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:11 BoogieIcfgContainer [2022-11-03 02:17:11,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:17:11,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:17:11,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:17:11,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:17:11,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:17:08" (1/3) ... [2022-11-03 02:17:11,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3743855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:11, skipping insertion in model container [2022-11-03 02:17:11,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:09" (2/3) ... [2022-11-03 02:17:11,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3743855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:11, skipping insertion in model container [2022-11-03 02:17:11,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:11" (3/3) ... [2022-11-03 02:17:11,574 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2022-11-03 02:17:11,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:17:11,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:17:11,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:17:11,682 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;@59089668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:17:11,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:17:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:17:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:17:11,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:11,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 02:17:11,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1548688865, now seen corresponding path program 1 times [2022-11-03 02:17:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704375705] [2022-11-03 02:17:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:12,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704375705] [2022-11-03 02:17:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704375705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:12,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:12,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:17:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224495194] [2022-11-03 02:17:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:12,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:17:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:17:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:17:12,249 INFO L87 Difference]: Start difference. First operand has 219 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 129 states have internal predecessors, (162), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:12,468 INFO L93 Difference]: Finished difference Result 346 states and 455 transitions. [2022-11-03 02:17:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:17:12,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-03 02:17:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:12,492 INFO L225 Difference]: With dead ends: 346 [2022-11-03 02:17:12,493 INFO L226 Difference]: Without dead ends: 216 [2022-11-03 02:17:12,503 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 [2022-11-03 02:17:12,507 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:12,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-03 02:17:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-03 02:17:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.278688524590164) internal successors, (156), 126 states have internal predecessors, (156), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:17:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 285 transitions. [2022-11-03 02:17:12,598 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 285 transitions. Word has length 71 [2022-11-03 02:17:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:12,600 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 285 transitions. [2022-11-03 02:17:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 285 transitions. [2022-11-03 02:17:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:17:12,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:12,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 02:17:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:17:12,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2058665022, now seen corresponding path program 1 times [2022-11-03 02:17:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:12,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852173312] [2022-11-03 02:17:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:12,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852173312] [2022-11-03 02:17:12,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852173312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:12,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:12,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845130166] [2022-11-03 02:17:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:12,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:12,936 INFO L87 Difference]: Start difference. First operand 216 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:13,132 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2022-11-03 02:17:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-03 02:17:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:13,146 INFO L225 Difference]: With dead ends: 342 [2022-11-03 02:17:13,146 INFO L226 Difference]: Without dead ends: 218 [2022-11-03 02:17:13,152 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 [2022-11-03 02:17:13,153 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:13,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-03 02:17:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-03 02:17:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:17:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 287 transitions. [2022-11-03 02:17:13,185 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 287 transitions. Word has length 72 [2022-11-03 02:17:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:13,185 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 287 transitions. [2022-11-03 02:17:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 287 transitions. [2022-11-03 02:17:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:17:13,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:13,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:13,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:17:13,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 523395938, now seen corresponding path program 1 times [2022-11-03 02:17:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:13,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736950823] [2022-11-03 02:17:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:13,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:13,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736950823] [2022-11-03 02:17:13,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736950823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:13,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:13,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302802070] [2022-11-03 02:17:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:13,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:13,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:13,398 INFO L87 Difference]: Start difference. First operand 218 states and 287 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:13,585 INFO L93 Difference]: Finished difference Result 471 states and 641 transitions. [2022-11-03 02:17:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-03 02:17:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:13,590 INFO L225 Difference]: With dead ends: 471 [2022-11-03 02:17:13,590 INFO L226 Difference]: Without dead ends: 271 [2022-11-03 02:17:13,592 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 [2022-11-03 02:17:13,594 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 59 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:13,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 507 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-03 02:17:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2022-11-03 02:17:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 162 states have internal predecessors, (213), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-03 02:17:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-03 02:17:13,642 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 77 [2022-11-03 02:17:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:13,644 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-03 02:17:13,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:17:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-03 02:17:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:17:13,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:13,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:13,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:17:13,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1007181635, now seen corresponding path program 1 times [2022-11-03 02:17:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:13,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000979267] [2022-11-03 02:17:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:13,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000979267] [2022-11-03 02:17:13,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000979267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:17:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724321825] [2022-11-03 02:17:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:13,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:13,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:17:13,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:17:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:14,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:17:14,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:14,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:17:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:17:14,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724321825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:17:14,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730402817] [2022-11-03 02:17:14,475 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 02:17:14,475 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:17:14,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:17:14,487 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:17:14,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:17:55,887 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:17:56,271 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 482 for LOIs [2022-11-03 02:18:06,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:06,210 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) [2022-11-03 02:18:06,220 INFO L158 Benchmark]: Toolchain (without parser) took 58037.46ms. Allocated memory was 113.2MB in the beginning and 522.2MB in the end (delta: 408.9MB). Free memory was 76.7MB in the beginning and 460.5MB in the end (delta: -383.8MB). Peak memory consumption was 319.0MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,220 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:18:06,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 913.07ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 61.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 174.06ms. Allocated memory is still 113.2MB. Free memory was 60.9MB in the beginning and 55.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,221 INFO L158 Benchmark]: Boogie Preprocessor took 118.96ms. Allocated memory is still 113.2MB. Free memory was 55.2MB in the beginning and 49.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,224 INFO L158 Benchmark]: RCFGBuilder took 2169.71ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 49.9MB in the beginning and 59.1MB in the end (delta: -9.2MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,224 INFO L158 Benchmark]: TraceAbstraction took 54648.00ms. Allocated memory was 151.0MB in the beginning and 522.2MB in the end (delta: 371.2MB). Free memory was 59.1MB in the beginning and 460.5MB in the end (delta: -401.4MB). Peak memory consumption was 263.7MB. Max. memory is 16.1GB. [2022-11-03 02:18:06,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 913.07ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 61.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 174.06ms. Allocated memory is still 113.2MB. Free memory was 60.9MB in the beginning and 55.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.96ms. Allocated memory is still 113.2MB. Free memory was 55.2MB in the beginning and 49.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2169.71ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 49.9MB in the beginning and 59.1MB in the end (delta: -9.2MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * TraceAbstraction took 54648.00ms. Allocated memory was 151.0MB in the beginning and 522.2MB in the end (delta: 371.2MB). Free memory was 59.1MB in the beginning and 460.5MB in the end (delta: -401.4MB). Peak memory consumption was 263.7MB. 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. [2022-11-03 02:18:06,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI --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 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e --- 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-5e519f3 [2022-11-03 02:18:08,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:08,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:08,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:08,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:08,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:08,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:08,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:08,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:08,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:08,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:08,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:08,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:08,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:08,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:08,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:08,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:08,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:08,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:08,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:08,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:08,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:08,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:08,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:08,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:08,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:08,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:08,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:08,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:08,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:08,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:08,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:08,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:08,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:08,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:08,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:08,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:08,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:08,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:08,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:08,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:08,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:18:08,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:08,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:08,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:08,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:08,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:08,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:08,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:08,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:08,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:08,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:08,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:08,688 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:08,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:08,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:08,690 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:18:08,691 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:18:08,691 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:18:08,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:18:08,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:08,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:08,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:08,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:08,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:18:08,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:08,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:08,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:08,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:08,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:08,693 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:18:08,693 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:18:08,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:08,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:08,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:18:08,694 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_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e [2022-11-03 02:18:09,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:09,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:09,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:09,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:09,048 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:09,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-03 02:18:09,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/58d980ad7/20556785dbf34241b1dbade1c3cba0c2/FLAG8cf0518c2 [2022-11-03 02:18:09,915 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:09,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2022-11-03 02:18:09,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/58d980ad7/20556785dbf34241b1dbade1c3cba0c2/FLAG8cf0518c2 [2022-11-03 02:18:10,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/data/58d980ad7/20556785dbf34241b1dbade1c3cba0c2 [2022-11-03 02:18:10,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:10,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:10,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:10,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:10,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:10,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:10" (1/1) ... [2022-11-03 02:18:10,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6817b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:10, skipping insertion in model container [2022-11-03 02:18:10,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:10" (1/1) ... [2022-11-03 02:18:10,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:10,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:10,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-03 02:18:10,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:10,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:18:10,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:11,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-03 02:18:11,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:11,142 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:11,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2022-11-03 02:18:11,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:11,305 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:11,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11 WrapperNode [2022-11-03 02:18:11,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:11,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:11,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:11,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:11,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,421 INFO L138 Inliner]: procedures = 136, calls = 237, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 932 [2022-11-03 02:18:11,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:11,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:11,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:11,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:11,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:11,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:11,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:11,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:11,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (1/1) ... [2022-11-03 02:18:11,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:11,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:11,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:18:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:18:11,610 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:18:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:18:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:18:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:18:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:18:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:18:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:18:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:18:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:18:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:18:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:18:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:18:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:18:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:18:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:18:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:18:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:18:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:18:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:18:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:18:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:18:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:18:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:18:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:18:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:18:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:18:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:18:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:18:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:18:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:18:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:18:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:18:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:18:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:18:11,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:18:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:18:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:18:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:18:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:18:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:18:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:18:11,618 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:18:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:18:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:18:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:18:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:18:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:18:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:18:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:18:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:18:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:18:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:18:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:11,904 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:11,906 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:13,137 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:13,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:13,157 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:18:13,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:13 BoogieIcfgContainer [2022-11-03 02:18:13,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:13,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:13,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:13,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:13,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:10" (1/3) ... [2022-11-03 02:18:13,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232d7fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:13, skipping insertion in model container [2022-11-03 02:18:13,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:11" (2/3) ... [2022-11-03 02:18:13,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232d7fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:13, skipping insertion in model container [2022-11-03 02:18:13,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:13" (3/3) ... [2022-11-03 02:18:13,172 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2022-11-03 02:18:13,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:13,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:18:13,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:13,282 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;@5ac8682b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:13,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:18:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 425 states, 330 states have (on average 1.5515151515151515) internal successors, (512), 335 states have internal predecessors, (512), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:18:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:18:13,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:13,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:18:13,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1920042768, now seen corresponding path program 1 times [2022-11-03 02:18:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261791587] [2022-11-03 02:18:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:13,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:13,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:18:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:13,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:18:13,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 02:18:13,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:13,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:13,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261791587] [2022-11-03 02:18:13,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261791587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:13,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:13,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:18:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482768235] [2022-11-03 02:18:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:18:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:18:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:13,945 INFO L87 Difference]: Start difference. First operand has 425 states, 330 states have (on average 1.5515151515151515) internal successors, (512), 335 states have internal predecessors, (512), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:14,059 INFO L93 Difference]: Finished difference Result 657 states and 974 transitions. [2022-11-03 02:18:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:18:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-11-03 02:18:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:14,092 INFO L225 Difference]: With dead ends: 657 [2022-11-03 02:18:14,092 INFO L226 Difference]: Without dead ends: 418 [2022-11-03 02:18:14,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:14,118 INFO L413 NwaCegarLoop]: 638 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, 638 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 [2022-11-03 02:18:14,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-03 02:18:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-03 02:18:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 324 states have (on average 1.5462962962962963) internal successors, (501), 328 states have internal predecessors, (501), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 02:18:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 630 transitions. [2022-11-03 02:18:14,194 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 630 transitions. Word has length 110 [2022-11-03 02:18:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:14,195 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 630 transitions. [2022-11-03 02:18:14,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 630 transitions. [2022-11-03 02:18:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:18:14,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:14,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:18:14,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:14,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1988702151, now seen corresponding path program 1 times [2022-11-03 02:18:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:14,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241739097] [2022-11-03 02:18:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:14,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:14,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:14,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:14,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:18:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:14,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:18:14,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:18:14,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:14,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:14,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241739097] [2022-11-03 02:18:14,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241739097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:14,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:14,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498027243] [2022-11-03 02:18:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:14,991 INFO L87 Difference]: Start difference. First operand 418 states and 630 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:15,138 INFO L93 Difference]: Finished difference Result 827 states and 1250 transitions. [2022-11-03 02:18:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2022-11-03 02:18:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:15,145 INFO L225 Difference]: With dead ends: 827 [2022-11-03 02:18:15,146 INFO L226 Difference]: Without dead ends: 420 [2022-11-03 02:18:15,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:15,149 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 152 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:15,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2309 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-03 02:18:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-11-03 02:18:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 325 states have (on average 1.5446153846153847) internal successors, (502), 330 states have internal predecessors, (502), 65 states have call successors, (65), 28 states have call predecessors, (65), 29 states have return successors, (66), 63 states have call predecessors, (66), 64 states have call successors, (66) [2022-11-03 02:18:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 633 transitions. [2022-11-03 02:18:15,212 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 633 transitions. Word has length 111 [2022-11-03 02:18:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:15,214 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 633 transitions. [2022-11-03 02:18:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 633 transitions. [2022-11-03 02:18:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:18:15,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:15,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-03 02:18:15,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:15,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 777220588, now seen corresponding path program 1 times [2022-11-03 02:18:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:15,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462066376] [2022-11-03 02:18:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:15,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:15,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:15,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:15,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:18:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:15,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:18:15,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:18:15,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:15,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:15,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462066376] [2022-11-03 02:18:15,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462066376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:15,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:15,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234588420] [2022-11-03 02:18:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:15,910 INFO L87 Difference]: Start difference. First operand 420 states and 633 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:16,037 INFO L93 Difference]: Finished difference Result 829 states and 1254 transitions. [2022-11-03 02:18:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:16,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-11-03 02:18:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:16,042 INFO L225 Difference]: With dead ends: 829 [2022-11-03 02:18:16,042 INFO L226 Difference]: Without dead ends: 422 [2022-11-03 02:18:16,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:16,045 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 151 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2298 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 [2022-11-03 02:18:16,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2298 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-03 02:18:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-03 02:18:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 326 states have (on average 1.5429447852760736) internal successors, (503), 332 states have internal predecessors, (503), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (70), 63 states have call predecessors, (70), 64 states have call successors, (70) [2022-11-03 02:18:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 638 transitions. [2022-11-03 02:18:16,086 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 638 transitions. Word has length 112 [2022-11-03 02:18:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:16,087 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 638 transitions. [2022-11-03 02:18:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 638 transitions. [2022-11-03 02:18:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:18:16,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:16,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:16,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:16,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:16,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1654145965, now seen corresponding path program 1 times [2022-11-03 02:18:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:16,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573896541] [2022-11-03 02:18:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:16,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:16,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:18:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:16,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:18:16,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:18:16,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:16,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573896541] [2022-11-03 02:18:16,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573896541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:16,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:16,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:16,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918696146] [2022-11-03 02:18:16,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:16,755 INFO L87 Difference]: Start difference. First operand 422 states and 638 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:16,879 INFO L93 Difference]: Finished difference Result 821 states and 1244 transitions. [2022-11-03 02:18:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:16,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2022-11-03 02:18:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:16,885 INFO L225 Difference]: With dead ends: 821 [2022-11-03 02:18:16,885 INFO L226 Difference]: Without dead ends: 422 [2022-11-03 02:18:16,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:16,894 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 150 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:16,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2312 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-03 02:18:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-03 02:18:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 326 states have (on average 1.5429447852760736) internal successors, (503), 332 states have internal predecessors, (503), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (69), 63 states have call predecessors, (69), 64 states have call successors, (69) [2022-11-03 02:18:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 637 transitions. [2022-11-03 02:18:16,949 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 637 transitions. Word has length 113 [2022-11-03 02:18:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:16,950 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 637 transitions. [2022-11-03 02:18:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 637 transitions. [2022-11-03 02:18:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 02:18:16,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:16,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:16,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:17,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1661851088, now seen corresponding path program 2 times [2022-11-03 02:18:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:17,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115573460] [2022-11-03 02:18:17,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:18:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:17,174 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:18:17,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 02:18:17,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:18:17,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 02:18:17,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:17,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:17,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115573460] [2022-11-03 02:18:17,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115573460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:17,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:17,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:17,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189239402] [2022-11-03 02:18:17,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:17,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:17,474 INFO L87 Difference]: Start difference. First operand 422 states and 637 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:17,508 INFO L93 Difference]: Finished difference Result 651 states and 959 transitions. [2022-11-03 02:18:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-11-03 02:18:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:17,512 INFO L225 Difference]: With dead ends: 651 [2022-11-03 02:18:17,512 INFO L226 Difference]: Without dead ends: 425 [2022-11-03 02:18:17,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:17,515 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1254 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 [2022-11-03 02:18:17,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1254 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-03 02:18:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 424. [2022-11-03 02:18:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 328 states have (on average 1.5396341463414633) internal successors, (505), 334 states have internal predecessors, (505), 65 states have call successors, (65), 28 states have call predecessors, (65), 30 states have return successors, (69), 63 states have call predecessors, (69), 64 states have call successors, (69) [2022-11-03 02:18:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 639 transitions. [2022-11-03 02:18:17,545 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 639 transitions. Word has length 114 [2022-11-03 02:18:17,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:17,546 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 639 transitions. [2022-11-03 02:18:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 639 transitions. [2022-11-03 02:18:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 02:18:17,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:17,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:17,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:17,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:17,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1015897934, now seen corresponding path program 1 times [2022-11-03 02:18:17,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:17,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805604487] [2022-11-03 02:18:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:17,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:17,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:17,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:18:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:18,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:18:18,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:18:18,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:18,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805604487] [2022-11-03 02:18:18,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805604487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:18,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:18,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960490545] [2022-11-03 02:18:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:18,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:18,230 INFO L87 Difference]: Start difference. First operand 424 states and 639 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:18,327 INFO L93 Difference]: Finished difference Result 827 states and 1251 transitions. [2022-11-03 02:18:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2022-11-03 02:18:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:18,334 INFO L225 Difference]: With dead ends: 827 [2022-11-03 02:18:18,334 INFO L226 Difference]: Without dead ends: 426 [2022-11-03 02:18:18,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:18,338 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 148 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:18,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2314 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-03 02:18:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-11-03 02:18:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 329 states have (on average 1.5379939209726443) internal successors, (506), 336 states have internal predecessors, (506), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (71), 63 states have call predecessors, (71), 64 states have call successors, (71) [2022-11-03 02:18:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 642 transitions. [2022-11-03 02:18:18,374 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 642 transitions. Word has length 123 [2022-11-03 02:18:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:18,374 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 642 transitions. [2022-11-03 02:18:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 642 transitions. [2022-11-03 02:18:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 02:18:18,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:18,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:18,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:18,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 938734032, now seen corresponding path program 1 times [2022-11-03 02:18:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077797885] [2022-11-03 02:18:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:18,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:18,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:18,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:18,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:18:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:18,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:18:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:18:19,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:19,007 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077797885] [2022-11-03 02:18:19,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077797885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:19,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:19,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102531487] [2022-11-03 02:18:19,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:19,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:19,010 INFO L87 Difference]: Start difference. First operand 426 states and 642 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:19,129 INFO L93 Difference]: Finished difference Result 825 states and 1246 transitions. [2022-11-03 02:18:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2022-11-03 02:18:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:19,133 INFO L225 Difference]: With dead ends: 825 [2022-11-03 02:18:19,134 INFO L226 Difference]: Without dead ends: 426 [2022-11-03 02:18:19,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:19,137 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 149 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2301 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 [2022-11-03 02:18:19,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2301 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-03 02:18:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-11-03 02:18:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 329 states have (on average 1.5379939209726443) internal successors, (506), 336 states have internal predecessors, (506), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (70), 63 states have call predecessors, (70), 64 states have call successors, (70) [2022-11-03 02:18:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 641 transitions. [2022-11-03 02:18:19,170 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 641 transitions. Word has length 124 [2022-11-03 02:18:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:19,170 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 641 transitions. [2022-11-03 02:18:19,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 641 transitions. [2022-11-03 02:18:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 02:18:19,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:19,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:19,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:19,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:19,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1566790059, now seen corresponding path program 2 times [2022-11-03 02:18:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:19,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270415848] [2022-11-03 02:18:19,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:18:19,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:19,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:19,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:18:19,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:18:19,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:18:19,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:18:19,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 02:18:19,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:19,819 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:19,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270415848] [2022-11-03 02:18:19,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270415848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:19,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:19,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:19,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543982429] [2022-11-03 02:18:19,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:19,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:19,822 INFO L87 Difference]: Start difference. First operand 426 states and 641 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:19,944 INFO L93 Difference]: Finished difference Result 827 states and 1251 transitions. [2022-11-03 02:18:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:18:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-11-03 02:18:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:19,948 INFO L225 Difference]: With dead ends: 827 [2022-11-03 02:18:19,948 INFO L226 Difference]: Without dead ends: 428 [2022-11-03 02:18:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:19,950 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 147 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2303 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 [2022-11-03 02:18:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2303 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-03 02:18:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-11-03 02:18:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 330 states have (on average 1.5363636363636364) internal successors, (507), 338 states have internal predecessors, (507), 65 states have call successors, (65), 28 states have call predecessors, (65), 32 states have return successors, (74), 63 states have call predecessors, (74), 64 states have call successors, (74) [2022-11-03 02:18:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 646 transitions. [2022-11-03 02:18:19,983 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 646 transitions. Word has length 125 [2022-11-03 02:18:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:19,983 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 646 transitions. [2022-11-03 02:18:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 646 transitions. [2022-11-03 02:18:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 02:18:19,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:19,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:20,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:20,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1988269323, now seen corresponding path program 1 times [2022-11-03 02:18:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:20,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671356592] [2022-11-03 02:18:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:20,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:20,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:18:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:20,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:20,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:20,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:20,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671356592] [2022-11-03 02:18:20,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671356592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:20,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:20,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968060322] [2022-11-03 02:18:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:20,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:20,560 INFO L87 Difference]: Start difference. First operand 428 states and 646 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:20,614 INFO L93 Difference]: Finished difference Result 900 states and 1378 transitions. [2022-11-03 02:18:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 126 [2022-11-03 02:18:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:20,624 INFO L225 Difference]: With dead ends: 900 [2022-11-03 02:18:20,624 INFO L226 Difference]: Without dead ends: 503 [2022-11-03 02:18:20,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:20,628 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 134 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1235 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 [2022-11-03 02:18:20,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1235 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-03 02:18:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 495. [2022-11-03 02:18:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 383 states have (on average 1.556135770234987) internal successors, (596), 391 states have internal predecessors, (596), 79 states have call successors, (79), 28 states have call predecessors, (79), 32 states have return successors, (90), 77 states have call predecessors, (90), 78 states have call successors, (90) [2022-11-03 02:18:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 765 transitions. [2022-11-03 02:18:20,672 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 765 transitions. Word has length 126 [2022-11-03 02:18:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:20,674 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 765 transitions. [2022-11-03 02:18:20,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 765 transitions. [2022-11-03 02:18:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 02:18:20,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:20,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:20,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:20,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:20,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash 913432522, now seen corresponding path program 1 times [2022-11-03 02:18:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:20,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462022033] [2022-11-03 02:18:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:20,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:20,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:20,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:18:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:21,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:18:21,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:18:21,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:21,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:21,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462022033] [2022-11-03 02:18:21,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462022033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:21,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:21,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074740058] [2022-11-03 02:18:21,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:21,323 INFO L87 Difference]: Start difference. First operand 495 states and 765 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:21,549 INFO L93 Difference]: Finished difference Result 1136 states and 1784 transitions. [2022-11-03 02:18:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2022-11-03 02:18:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:21,555 INFO L225 Difference]: With dead ends: 1136 [2022-11-03 02:18:21,555 INFO L226 Difference]: Without dead ends: 670 [2022-11-03 02:18:21,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:21,557 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 737 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:21,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1461 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-03 02:18:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 503. [2022-11-03 02:18:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 390 states have (on average 1.5435897435897437) internal successors, (602), 397 states have internal predecessors, (602), 79 states have call successors, (79), 30 states have call predecessors, (79), 33 states have return successors, (86), 77 states have call predecessors, (86), 78 states have call successors, (86) [2022-11-03 02:18:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 767 transitions. [2022-11-03 02:18:21,620 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 767 transitions. Word has length 127 [2022-11-03 02:18:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:21,621 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 767 transitions. [2022-11-03 02:18:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:18:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 767 transitions. [2022-11-03 02:18:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:18:21,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:21,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:21,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:21,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:21,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:21,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash -137179952, now seen corresponding path program 1 times [2022-11-03 02:18:21,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:21,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605896710] [2022-11-03 02:18:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:21,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:21,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:21,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:21,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:18:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:22,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:22,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:22,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:22,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605896710] [2022-11-03 02:18:22,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605896710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:22,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:22,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137254639] [2022-11-03 02:18:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:22,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:22,216 INFO L87 Difference]: Start difference. First operand 503 states and 767 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:22,325 INFO L93 Difference]: Finished difference Result 1122 states and 1758 transitions. [2022-11-03 02:18:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:22,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2022-11-03 02:18:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:22,330 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 02:18:22,331 INFO L226 Difference]: Without dead ends: 660 [2022-11-03 02:18:22,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:22,333 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 128 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1268 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 [2022-11-03 02:18:22,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1268 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-03 02:18:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 652. [2022-11-03 02:18:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 508 states have (on average 1.578740157480315) internal successors, (802), 515 states have internal predecessors, (802), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (121), 108 states have call predecessors, (121), 109 states have call successors, (121) [2022-11-03 02:18:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1033 transitions. [2022-11-03 02:18:22,432 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1033 transitions. Word has length 128 [2022-11-03 02:18:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:22,433 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1033 transitions. [2022-11-03 02:18:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1033 transitions. [2022-11-03 02:18:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:18:22,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:22,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:22,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:22,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:22,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:22,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2132717204, now seen corresponding path program 1 times [2022-11-03 02:18:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:22,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849969893] [2022-11-03 02:18:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:22,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:22,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:22,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:18:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:23,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:18:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:23,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:23,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:23,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849969893] [2022-11-03 02:18:23,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849969893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:23,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40621760] [2022-11-03 02:18:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:18:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:18:23,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:18:23,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 02:18:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:18:23,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:18:23,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:18:24,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [40621760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131254434] [2022-11-03 02:18:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:24,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:24,284 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:24,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:18:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:24,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:18:24,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:18:24,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:18:24,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131254434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:24,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:18:24,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-03 02:18:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191303160] [2022-11-03 02:18:24,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:18:24,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:18:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:18:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:18:24,936 INFO L87 Difference]: Start difference. First operand 652 states and 1033 transitions. Second operand has 20 states, 20 states have (on average 10.25) internal successors, (205), 18 states have internal predecessors, (205), 4 states have call successors, (43), 6 states have call predecessors, (43), 9 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-03 02:18:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:37,456 INFO L93 Difference]: Finished difference Result 3633 states and 6098 transitions. [2022-11-03 02:18:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:18:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.25) internal successors, (205), 18 states have internal predecessors, (205), 4 states have call successors, (43), 6 states have call predecessors, (43), 9 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) Word has length 128 [2022-11-03 02:18:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:37,488 INFO L225 Difference]: With dead ends: 3633 [2022-11-03 02:18:37,488 INFO L226 Difference]: Without dead ends: 3407 [2022-11-03 02:18:37,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:18:37,492 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4747 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 9234 mSolverCounterSat, 1335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 10569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1335 IncrementalHoareTripleChecker+Valid, 9234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:37,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4840 Valid, 6050 Invalid, 10569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1335 Valid, 9234 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 02:18:37,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2022-11-03 02:18:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 2601. [2022-11-03 02:18:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2061 states have (on average 1.6196021348859777) internal successors, (3338), 2074 states have internal predecessors, (3338), 472 states have call successors, (472), 59 states have call predecessors, (472), 67 states have return successors, (576), 471 states have call predecessors, (576), 470 states have call successors, (576) [2022-11-03 02:18:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 4386 transitions. [2022-11-03 02:18:37,964 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 4386 transitions. Word has length 128 [2022-11-03 02:18:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:37,965 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 4386 transitions. [2022-11-03 02:18:37,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.25) internal successors, (205), 18 states have internal predecessors, (205), 4 states have call successors, (43), 6 states have call predecessors, (43), 9 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2022-11-03 02:18:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 4386 transitions. [2022-11-03 02:18:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:18:37,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:37,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:37,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:38,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:38,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:18:38,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1036156563, now seen corresponding path program 1 times [2022-11-03 02:18:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:38,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258812644] [2022-11-03 02:18:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:38,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:38,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:38,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:38,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:18:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:38,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:38,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:38,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:38,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:38,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258812644] [2022-11-03 02:18:38,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258812644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:38,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:38,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885720409] [2022-11-03 02:18:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:38,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:38,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:38,908 INFO L87 Difference]: Start difference. First operand 2601 states and 4386 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:39,573 INFO L93 Difference]: Finished difference Result 6223 states and 10591 transitions. [2022-11-03 02:18:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:39,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-11-03 02:18:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:39,596 INFO L225 Difference]: With dead ends: 6223 [2022-11-03 02:18:39,596 INFO L226 Difference]: Without dead ends: 3881 [2022-11-03 02:18:39,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:39,606 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 126 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1268 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 [2022-11-03 02:18:39,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1268 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2022-11-03 02:18:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3865. [2022-11-03 02:18:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3087 states have (on average 1.627470035633301) internal successors, (5024), 3100 states have internal predecessors, (5024), 710 states have call successors, (710), 59 states have call predecessors, (710), 67 states have return successors, (846), 709 states have call predecessors, (846), 708 states have call successors, (846) [2022-11-03 02:18:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 6580 transitions. [2022-11-03 02:18:40,246 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 6580 transitions. Word has length 132 [2022-11-03 02:18:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:40,247 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 6580 transitions. [2022-11-03 02:18:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 6580 transitions. [2022-11-03 02:18:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 02:18:40,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:40,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:40,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:40,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1989800893, now seen corresponding path program 1 times [2022-11-03 02:18:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315479727] [2022-11-03 02:18:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:40,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:40,490 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:40,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:18:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:40,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:40,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:40,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:40,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315479727] [2022-11-03 02:18:40,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315479727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:40,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:40,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060276963] [2022-11-03 02:18:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:40,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:40,806 INFO L87 Difference]: Start difference. First operand 3865 states and 6580 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:41,862 INFO L93 Difference]: Finished difference Result 9161 states and 15763 transitions. [2022-11-03 02:18:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:41,863 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-11-03 02:18:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:41,893 INFO L225 Difference]: With dead ends: 9161 [2022-11-03 02:18:41,894 INFO L226 Difference]: Without dead ends: 5821 [2022-11-03 02:18:41,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:41,906 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 124 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1256 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 [2022-11-03 02:18:41,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1256 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2022-11-03 02:18:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5805. [2022-11-03 02:18:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 4703 states have (on average 1.6338507335743142) internal successors, (7684), 4716 states have internal predecessors, (7684), 1034 states have call successors, (1034), 59 states have call predecessors, (1034), 67 states have return successors, (1254), 1033 states have call predecessors, (1254), 1032 states have call successors, (1254) [2022-11-03 02:18:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 9972 transitions. [2022-11-03 02:18:43,124 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 9972 transitions. Word has length 133 [2022-11-03 02:18:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:43,125 INFO L495 AbstractCegarLoop]: Abstraction has 5805 states and 9972 transitions. [2022-11-03 02:18:43,125 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 9972 transitions. [2022-11-03 02:18:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 02:18:43,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:43,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:43,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:43,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1792520012, now seen corresponding path program 1 times [2022-11-03 02:18:43,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:43,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511939663] [2022-11-03 02:18:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:43,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:43,380 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:43,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:18:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:43,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:43,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:43,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:43,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511939663] [2022-11-03 02:18:43,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511939663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:43,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:43,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732136357] [2022-11-03 02:18:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:43,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:43,760 INFO L87 Difference]: Start difference. First operand 5805 states and 9972 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:45,350 INFO L93 Difference]: Finished difference Result 13803 states and 23951 transitions. [2022-11-03 02:18:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:45,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-11-03 02:18:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:45,417 INFO L225 Difference]: With dead ends: 13803 [2022-11-03 02:18:45,417 INFO L226 Difference]: Without dead ends: 8955 [2022-11-03 02:18:45,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:45,436 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 122 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1256 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 [2022-11-03 02:18:45,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1256 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2022-11-03 02:18:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 8939. [2022-11-03 02:18:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8939 states, 7347 states have (on average 1.6384919014563768) internal successors, (12038), 7360 states have internal predecessors, (12038), 1524 states have call successors, (1524), 59 states have call predecessors, (1524), 67 states have return successors, (1884), 1523 states have call predecessors, (1884), 1522 states have call successors, (1884) [2022-11-03 02:18:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8939 states to 8939 states and 15446 transitions. [2022-11-03 02:18:47,404 INFO L78 Accepts]: Start accepts. Automaton has 8939 states and 15446 transitions. Word has length 134 [2022-11-03 02:18:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:47,404 INFO L495 AbstractCegarLoop]: Abstraction has 8939 states and 15446 transitions. [2022-11-03 02:18:47,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 8939 states and 15446 transitions. [2022-11-03 02:18:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:18:47,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:47,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:47,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:47,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1723833, now seen corresponding path program 1 times [2022-11-03 02:18:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634312784] [2022-11-03 02:18:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:47,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:47,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:47,658 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:47,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:18:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:47,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:47,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:47,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:47,986 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:47,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634312784] [2022-11-03 02:18:47,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634312784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:47,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:47,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049049746] [2022-11-03 02:18:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:47,988 INFO L87 Difference]: Start difference. First operand 8939 states and 15446 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:49,791 INFO L93 Difference]: Finished difference Result 22083 states and 38467 transitions. [2022-11-03 02:18:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-11-03 02:18:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:49,854 INFO L225 Difference]: With dead ends: 22083 [2022-11-03 02:18:49,854 INFO L226 Difference]: Without dead ends: 14597 [2022-11-03 02:18:49,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:49,882 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 120 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1279 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 [2022-11-03 02:18:49,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1279 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14597 states. [2022-11-03 02:18:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14597 to 14581. [2022-11-03 02:18:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14581 states, 12003 states have (on average 1.6349246021827877) internal successors, (19624), 12016 states have internal predecessors, (19624), 2510 states have call successors, (2510), 59 states have call predecessors, (2510), 67 states have return successors, (3114), 2509 states have call predecessors, (3114), 2508 states have call successors, (3114) [2022-11-03 02:18:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14581 states to 14581 states and 25248 transitions. [2022-11-03 02:18:52,761 INFO L78 Accepts]: Start accepts. Automaton has 14581 states and 25248 transitions. Word has length 135 [2022-11-03 02:18:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:52,762 INFO L495 AbstractCegarLoop]: Abstraction has 14581 states and 25248 transitions. [2022-11-03 02:18:52,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14581 states and 25248 transitions. [2022-11-03 02:18:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 02:18:52,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:52,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:18:52,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:53,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:18:53,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 719413944, now seen corresponding path program 1 times [2022-11-03 02:18:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:18:53,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292678300] [2022-11-03 02:18:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:53,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:18:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:18:53,029 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:18:53,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:18:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:53,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:18:53,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:18:53,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:53,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:18:53,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292678300] [2022-11-03 02:18:53,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292678300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:53,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:53,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343060855] [2022-11-03 02:18:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:53,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:53,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:18:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:53,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:53,419 INFO L87 Difference]: Start difference. First operand 14581 states and 25248 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:18:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:56,141 INFO L93 Difference]: Finished difference Result 36811 states and 64093 transitions. [2022-11-03 02:18:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:56,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-11-03 02:18:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:56,248 INFO L225 Difference]: With dead ends: 36811 [2022-11-03 02:18:56,249 INFO L226 Difference]: Without dead ends: 24477 [2022-11-03 02:18:56,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:56,284 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 118 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1264 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 [2022-11-03 02:18:56,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1264 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24477 states. [2022-11-03 02:19:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24477 to 24461. [2022-11-03 02:19:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24461 states, 20239 states have (on average 1.635061020801423) internal successors, (33092), 20252 states have internal predecessors, (33092), 4154 states have call successors, (4154), 59 states have call predecessors, (4154), 67 states have return successors, (5058), 4153 states have call predecessors, (5058), 4152 states have call successors, (5058) [2022-11-03 02:19:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24461 states to 24461 states and 42304 transitions. [2022-11-03 02:19:00,252 INFO L78 Accepts]: Start accepts. Automaton has 24461 states and 42304 transitions. Word has length 136 [2022-11-03 02:19:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:00,253 INFO L495 AbstractCegarLoop]: Abstraction has 24461 states and 42304 transitions. [2022-11-03 02:19:00,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 24461 states and 42304 transitions. [2022-11-03 02:19:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:19:00,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:00,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:19:00,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:00,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 385345787, now seen corresponding path program 1 times [2022-11-03 02:19:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:00,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379123817] [2022-11-03 02:19:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:00,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:00,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:00,547 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:00,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:19:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:00,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:19:00,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:19:00,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:00,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:00,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379123817] [2022-11-03 02:19:00,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379123817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:00,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:00,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894627568] [2022-11-03 02:19:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:00,955 INFO L87 Difference]: Start difference. First operand 24461 states and 42304 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,027 INFO L93 Difference]: Finished difference Result 58517 states and 101183 transitions. [2022-11-03 02:19:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:05,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-11-03 02:19:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:05,365 INFO L225 Difference]: With dead ends: 58517 [2022-11-03 02:19:05,366 INFO L226 Difference]: Without dead ends: 38239 [2022-11-03 02:19:05,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,412 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 116 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1232 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 [2022-11-03 02:19:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1232 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:19:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38239 states. [2022-11-03 02:19:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38239 to 38223. [2022-11-03 02:19:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38223 states, 31595 states have (on average 1.6078493432505143) internal successors, (50800), 31608 states have internal predecessors, (50800), 6560 states have call successors, (6560), 59 states have call predecessors, (6560), 67 states have return successors, (8170), 6559 states have call predecessors, (8170), 6558 states have call successors, (8170) [2022-11-03 02:19:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38223 states to 38223 states and 65530 transitions. [2022-11-03 02:19:10,997 INFO L78 Accepts]: Start accepts. Automaton has 38223 states and 65530 transitions. Word has length 137 [2022-11-03 02:19:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:10,998 INFO L495 AbstractCegarLoop]: Abstraction has 38223 states and 65530 transitions. [2022-11-03 02:19:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 38223 states and 65530 transitions. [2022-11-03 02:19:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 02:19:11,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:11,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 02:19:11,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:19:11,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:11,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash 566030457, now seen corresponding path program 1 times [2022-11-03 02:19:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:19:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730946544] [2022-11-03 02:19:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:19:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:19:11,297 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:19:11,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3cb0194-2950-4b4f-b5a0-c309b38b4f99/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:19:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:11,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:19:11,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:19:11,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:11,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:19:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730946544] [2022-11-03 02:19:11,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730946544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:11,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:11,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635631307] [2022-11-03 02:19:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:11,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:19:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:11,668 INFO L87 Difference]: Start difference. First operand 38223 states and 65530 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)