./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/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_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/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_8d8c901d-aa27-43ec-85b6-a671657e3bab/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- 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 01:43:52,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:43:52,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:43:52,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:43:52,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:43:52,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:43:52,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:43:52,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:43:52,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:43:52,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:43:52,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:43:52,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:43:52,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:43:52,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:43:52,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:43:52,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:43:52,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:43:52,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:43:52,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:43:52,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:43:52,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:43:52,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:43:52,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:43:52,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:43:52,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:43:52,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:43:52,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:43:52,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:43:52,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:43:52,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:43:52,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:43:52,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:43:52,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:43:52,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:43:52,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:43:52,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:43:52,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:43:52,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:43:52,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:43:52,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:43:52,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:43:52,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:43:53,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:43:53,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:43:53,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:43:53,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:43:53,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:43:53,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:43:53,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:43:53,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:43:53,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:43:53,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:43:53,014 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:43:53,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:43:53,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:43:53,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:43:53,015 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:43:53,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:43:53,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:43:53,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:43:53,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:43:53,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:43:53,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:43:53,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:43:53,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:43:53,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:43:53,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:43:53,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:43:53,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:43:53,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:43:53,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:43:53,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:43:53,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:43:53,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:43:53,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:53,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:43:53,021 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:43:53,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:43:53,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:43:53,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:43:53,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:43:53,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:43:53,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:43:53,022 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2022-11-03 01:43:53,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:43:53,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:43:53,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:43:53,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:43:53,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:43:53,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-03 01:43:53,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/72d673b1e/4431888565cb4c089b45960d4ecbd5b3/FLAG9b41c442d [2022-11-03 01:43:53,933 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:43:53,934 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-03 01:43:53,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/72d673b1e/4431888565cb4c089b45960d4ecbd5b3/FLAG9b41c442d [2022-11-03 01:43:54,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/72d673b1e/4431888565cb4c089b45960d4ecbd5b3 [2022-11-03 01:43:54,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:43:54,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:43:54,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:54,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:43:54,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:43:54,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:54" (1/1) ... [2022-11-03 01:43:54,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dc18dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:54, skipping insertion in model container [2022-11-03 01:43:54,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:54" (1/1) ... [2022-11-03 01:43:54,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:43:54,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:43:54,699 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-03 01:43:54,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:54,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:43:55,043 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-03 01:43:55,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:55,157 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:43:55,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55 WrapperNode [2022-11-03 01:43:55,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:55,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:55,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:43:55,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:43:55,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,299 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1006 [2022-11-03 01:43:55,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:55,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:43:55,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:43:55,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:43:55,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:43:55,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:43:55,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:43:55,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:43:55,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (1/1) ... [2022-11-03 01:43:55,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:55,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:43:55,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:43:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:43:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:43:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:43:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:43:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:43:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:43:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:43:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:43:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:43:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:43:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:43:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:43:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:43:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:43:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:43:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:43:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:43:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:43:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:43:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:43:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:43:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:43:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:43:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:43:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:43:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:43:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:43:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:43:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:43:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:43:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:43:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:43:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:43:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:43:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:43:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:43:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:43:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:43:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:43:55,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:43:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:43:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:43:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:43:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:43:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:43:55,744 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:43:55,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:43:56,819 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:43:57,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:43:57,290 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:43:57,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:43:57 BoogieIcfgContainer [2022-11-03 01:43:57,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:43:57,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:43:57,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:43:57,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:43:57,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:43:54" (1/3) ... [2022-11-03 01:43:57,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f4cbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:43:57, skipping insertion in model container [2022-11-03 01:43:57,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:55" (2/3) ... [2022-11-03 01:43:57,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f4cbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:43:57, skipping insertion in model container [2022-11-03 01:43:57,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:43:57" (3/3) ... [2022-11-03 01:43:57,304 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2022-11-03 01:43:57,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:43:57,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:43:57,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:43:57,417 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;@4590abf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:43:57,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:43:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 106 states have (on average 1.330188679245283) internal successors, (141), 110 states have internal predecessors, (141), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-03 01:43:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:43:57,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:57,440 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] [2022-11-03 01:43:57,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 929185348, now seen corresponding path program 1 times [2022-11-03 01:43:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:57,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801948687] [2022-11-03 01:43:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:57,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:57,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801948687] [2022-11-03 01:43:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801948687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:57,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:57,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:43:57,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301161528] [2022-11-03 01:43:57,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:57,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:43:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:43:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:43:57,997 INFO L87 Difference]: Start difference. First operand has 182 states, 106 states have (on average 1.330188679245283) internal successors, (141), 110 states have internal predecessors, (141), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:58,199 INFO L93 Difference]: Finished difference Result 281 states and 376 transitions. [2022-11-03 01:43:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:43:58,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 72 [2022-11-03 01:43:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:58,220 INFO L225 Difference]: With dead ends: 281 [2022-11-03 01:43:58,220 INFO L226 Difference]: Without dead ends: 179 [2022-11-03 01:43:58,229 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 01:43:58,233 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:58,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:43:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-03 01:43:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-03 01:43:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 107 states have internal predecessors, (135), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 01:43:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2022-11-03 01:43:58,329 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 72 [2022-11-03 01:43:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:58,331 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2022-11-03 01:43:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2022-11-03 01:43:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 01:43:58,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:58,344 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] [2022-11-03 01:43:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:43:58,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1244535891, now seen corresponding path program 1 times [2022-11-03 01:43:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643212999] [2022-11-03 01:43:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:58,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:58,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643212999] [2022-11-03 01:43:58,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643212999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:58,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:58,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:43:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366114366] [2022-11-03 01:43:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:43:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:43:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:43:58,619 INFO L87 Difference]: Start difference. First operand 179 states and 242 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:58,780 INFO L93 Difference]: Finished difference Result 277 states and 364 transitions. [2022-11-03 01:43:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:43:58,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 73 [2022-11-03 01:43:58,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:58,783 INFO L225 Difference]: With dead ends: 277 [2022-11-03 01:43:58,783 INFO L226 Difference]: Without dead ends: 181 [2022-11-03 01:43:58,784 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 01:43:58,785 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:58,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 415 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:43:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-03 01:43:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-03 01:43:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 109 states have internal predecessors, (137), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 01:43:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 244 transitions. [2022-11-03 01:43:58,821 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 244 transitions. Word has length 73 [2022-11-03 01:43:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:58,823 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 244 transitions. [2022-11-03 01:43:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 244 transitions. [2022-11-03 01:43:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:43:58,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:58,829 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:43:58,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:43:58,830 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1473731100, now seen corresponding path program 1 times [2022-11-03 01:43:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277893597] [2022-11-03 01:43:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:59,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:59,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277893597] [2022-11-03 01:43:59,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277893597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:59,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:59,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:43:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798755544] [2022-11-03 01:43:59,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:59,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:43:59,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:43:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:43:59,044 INFO L87 Difference]: Start difference. First operand 181 states and 244 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:59,211 INFO L93 Difference]: Finished difference Result 392 states and 547 transitions. [2022-11-03 01:43:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:43:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2022-11-03 01:43:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:59,221 INFO L225 Difference]: With dead ends: 392 [2022-11-03 01:43:59,222 INFO L226 Difference]: Without dead ends: 229 [2022-11-03 01:43:59,224 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 01:43:59,230 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 57 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:59,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 431 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:43:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-03 01:43:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2022-11-03 01:43:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.3768115942028984) internal successors, (190), 141 states have internal predecessors, (190), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 01:43:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 319 transitions. [2022-11-03 01:43:59,254 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 319 transitions. Word has length 78 [2022-11-03 01:43:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:59,255 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 319 transitions. [2022-11-03 01:43:59,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:43:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 319 transitions. [2022-11-03 01:43:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 01:43:59,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:59,258 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:43:59,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:43:59,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 64739026, now seen corresponding path program 1 times [2022-11-03 01:43:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:59,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770373167] [2022-11-03 01:43:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:59,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770373167] [2022-11-03 01:43:59,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770373167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:43:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406293170] [2022-11-03 01:43:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:59,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:59,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:43:59,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:43:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:59,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:43:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:43:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:59,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:43:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:43:59,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406293170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:43:59,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745887205] [2022-11-03 01:43:59,965 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 01:43:59,965 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:43:59,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:43:59,975 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:43:59,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:44:42,989 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:44:43,297 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 01:44:43,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:45:13,528 WARN L234 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:26,094 WARN L234 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:32,059 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:02,169 WARN L234 SmtUtils]: Spent 22.71s on a formula simplification. DAG size of input: 592 DAG size of output: 467 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:25,747 WARN L234 SmtUtils]: Spent 22.14s on a formula simplification. DAG size of input: 595 DAG size of output: 467 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:32,136 WARN L234 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 355 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:38,599 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 353 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:45,265 WARN L234 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 549 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1745887205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:45,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:46:45,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 01:46:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081063285] [2022-11-03 01:46:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 01:46:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 01:46:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:46:45,276 INFO L87 Difference]: Start difference. First operand 224 states and 319 transitions. Second operand has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-03 01:46:56,013 WARN L234 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 575 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:05,656 WARN L234 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 575 DAG size of output: 425 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:18,876 WARN L234 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 600 DAG size of output: 431 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:47:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:31,925 INFO L93 Difference]: Finished difference Result 531 states and 806 transitions. [2022-11-03 01:47:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 01:47:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 79 [2022-11-03 01:47:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:31,928 INFO L225 Difference]: With dead ends: 531 [2022-11-03 01:47:31,929 INFO L226 Difference]: Without dead ends: 325 [2022-11-03 01:47:31,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 157.7s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:47:31,931 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:31,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 3413 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 01:47:31,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-03 01:47:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 252. [2022-11-03 01:47:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 165 states have (on average 1.387878787878788) internal successors, (229), 168 states have internal predecessors, (229), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-03 01:47:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 358 transitions. [2022-11-03 01:47:32,075 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 358 transitions. Word has length 79 [2022-11-03 01:47:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:32,076 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 358 transitions. [2022-11-03 01:47:32,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-03 01:47:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 358 transitions. [2022-11-03 01:47:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 01:47:32,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:32,078 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 01:47:32,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:47:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:32,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1196228286, now seen corresponding path program 1 times [2022-11-03 01:47:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:32,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116865681] [2022-11-03 01:47:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 01:47:32,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:32,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116865681] [2022-11-03 01:47:32,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116865681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:32,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813969601] [2022-11-03 01:47:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:32,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:32,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:32,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:47:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:32,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:47:32,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 01:47:32,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 01:47:32,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813969601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:47:32,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870762820] [2022-11-03 01:47:32,919 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-03 01:47:32,919 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:47:32,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:47:32,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:47:32,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:27,248 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:48:27,628 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 01:48:28,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:49:00,269 WARN L234 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:12,994 WARN L234 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:18,954 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:43,539 WARN L234 SmtUtils]: Spent 16.95s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:02,077 WARN L234 SmtUtils]: Spent 16.95s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:16,029 WARN L234 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 572 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:22,375 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 568 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:32,132 WARN L234 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 572 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:38,970 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 553 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:45,623 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 584 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:45,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1870762820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:45,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:50:45,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 01:50:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796915685] [2022-11-03 01:50:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:50:45,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:50:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:50:45,634 INFO L87 Difference]: Start difference. First operand 252 states and 358 transitions. Second operand has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 01:50:53,152 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 346 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:59,850 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 346 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:05,817 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 343 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:11,771 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 341 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:24,088 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 526 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:36,219 WARN L234 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 378 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:42,589 INFO L93 Difference]: Finished difference Result 585 states and 883 transitions. [2022-11-03 01:51:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:51:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 85 [2022-11-03 01:51:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:42,592 INFO L225 Difference]: With dead ends: 585 [2022-11-03 01:51:42,593 INFO L226 Difference]: Without dead ends: 379 [2022-11-03 01:51:42,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 185.2s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:51:42,595 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 215 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:42,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 3096 Invalid, 2066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 01:51:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-03 01:51:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 296. [2022-11-03 01:51:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 206 states have (on average 1.441747572815534) internal successors, (297), 210 states have internal predecessors, (297), 67 states have call successors, (67), 22 states have call predecessors, (67), 22 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-03 01:51:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 430 transitions. [2022-11-03 01:51:42,788 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 430 transitions. Word has length 85 [2022-11-03 01:51:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 430 transitions. [2022-11-03 01:51:42,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-03 01:51:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 430 transitions. [2022-11-03 01:51:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 01:51:42,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:42,791 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:51:42,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 01:51:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:43,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1544701501, now seen corresponding path program 1 times [2022-11-03 01:51:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:43,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409970154] [2022-11-03 01:51:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:51:43,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409970154] [2022-11-03 01:51:43,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409970154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014056333] [2022-11-03 01:51:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:43,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:43,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:51:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:43,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:43,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:51:43,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:51:43,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014056333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:43,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [299259270] [2022-11-03 01:51:43,658 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 01:51:43,658 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:43,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:43,660 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:43,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:21,403 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:52:21,704 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-03 01:52:21,768 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-03 01:52:21,833 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 253 for LOIs [2022-11-03 01:52:21,911 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 01:52:22,219 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:51,691 WARN L234 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:04,384 WARN L234 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:10,385 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:40,609 WARN L234 SmtUtils]: Spent 22.70s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:04,902 WARN L234 SmtUtils]: Spent 22.68s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:22,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [299259270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:22,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:54:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 01:54:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738354929] [2022-11-03 01:54:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:22,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 01:54:22,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 01:54:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:54:22,201 INFO L87 Difference]: Start difference. First operand 296 states and 430 transitions. Second operand has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-03 01:54:32,616 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 622 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:41,907 WARN L234 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 622 DAG size of output: 423 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:58,620 INFO L93 Difference]: Finished difference Result 615 states and 932 transitions. [2022-11-03 01:54:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:54:58,621 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 88 [2022-11-03 01:54:58,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:58,623 INFO L225 Difference]: With dead ends: 615 [2022-11-03 01:54:58,624 INFO L226 Difference]: Without dead ends: 409 [2022-11-03 01:54:58,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 137.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 01:54:58,626 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 171 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:58,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 3856 Invalid, 3434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2022-11-03 01:54:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-03 01:54:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 363. [2022-11-03 01:54:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 266 states have (on average 1.4699248120300752) internal successors, (391), 271 states have internal predecessors, (391), 71 states have call successors, (71), 25 states have call predecessors, (71), 25 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 01:54:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2022-11-03 01:54:59,025 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 88 [2022-11-03 01:54:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:59,025 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2022-11-03 01:54:59,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-03 01:54:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2022-11-03 01:54:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 01:54:59,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:59,028 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:54:59,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:59,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 01:54:59,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1653124015, now seen corresponding path program 1 times [2022-11-03 01:54:59,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:59,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673177513] [2022-11-03 01:54:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:59,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:54:59,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:59,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673177513] [2022-11-03 01:54:59,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673177513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343223907] [2022-11-03 01:54:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:59,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:59,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:59,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:54:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:59,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:54:59,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:54:59,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:54:59,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343223907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:54:59,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1283739471] [2022-11-03 01:54:59,855 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-03 01:54:59,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:59,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:59,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:59,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:55:39,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:39,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:39,801 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.ipretEnterCall(DagInterpreter.java:193) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:185) 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 01:55:39,809 INFO L158 Benchmark]: Toolchain (without parser) took 705578.93ms. Allocated memory was 102.8MB in the beginning and 1.1GB in the end (delta: 996.1MB). Free memory was 60.0MB in the beginning and 730.4MB in the end (delta: -670.3MB). Peak memory consumption was 680.6MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,810 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:55:39,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 924.81ms. Allocated memory is still 102.8MB. Free memory was 59.9MB in the beginning and 50.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 140.80ms. Allocated memory is still 102.8MB. Free memory was 50.7MB in the beginning and 76.5MB in the end (delta: -25.9MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,812 INFO L158 Benchmark]: Boogie Preprocessor took 51.98ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 72.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,812 INFO L158 Benchmark]: RCFGBuilder took 1940.15ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 71.9MB in the beginning and 78.0MB in the end (delta: -6.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,813 INFO L158 Benchmark]: TraceAbstraction took 702512.26ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 958.4MB). Free memory was 77.0MB in the beginning and 730.4MB in the end (delta: -653.4MB). Peak memory consumption was 660.0MB. Max. memory is 16.1GB. [2022-11-03 01:55:39,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 924.81ms. Allocated memory is still 102.8MB. Free memory was 59.9MB in the beginning and 50.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 140.80ms. Allocated memory is still 102.8MB. Free memory was 50.7MB in the beginning and 76.5MB in the end (delta: -25.9MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.98ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 72.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1940.15ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 71.9MB in the beginning and 78.0MB in the end (delta: -6.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * TraceAbstraction took 702512.26ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 958.4MB). Free memory was 77.0MB in the beginning and 730.4MB in the end (delta: -653.4MB). Peak memory consumption was 660.0MB. 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 01:55:39,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/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_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/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_8d8c901d-aa27-43ec-85b6-a671657e3bab/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- 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 01:55:42,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:55:42,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:55:42,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:55:42,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:55:42,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:55:42,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:55:42,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:55:42,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:55:42,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:55:42,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:55:42,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:55:42,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:55:42,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:55:42,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:55:42,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:55:42,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:55:42,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:55:42,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:55:42,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:55:42,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:55:42,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:55:42,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:55:42,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:55:42,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:55:42,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:55:42,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:55:42,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:55:42,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:55:42,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:55:42,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:55:42,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:55:42,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:55:42,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:55:42,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:55:42,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:55:42,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:55:42,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:55:42,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:55:42,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:55:42,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:55:42,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 01:55:42,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:55:42,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:55:42,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:55:42,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:55:42,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:55:42,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:55:42,249 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:55:42,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:55:42,250 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:55:42,250 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:55:42,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:55:42,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:55:42,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:55:42,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:55:42,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:55:42,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:55:42,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:55:42,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:55:42,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:55:42,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:55:42,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:55:42,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:55:42,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:55:42,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:55:42,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:55:42,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:55:42,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:55:42,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:55:42,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:55:42,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:42,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:55:42,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:55:42,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:55:42,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:55:42,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:42,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:55:42,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:55:42,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:55:42,257 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2022-11-03 01:55:42,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:55:42,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:55:42,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:55:42,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:55:42,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:55:42,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-03 01:55:42,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/d64ab3ad5/7b995651c35b4a7aa19d949a44de4c74/FLAG629695bee [2022-11-03 01:55:43,329 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:55:43,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-03 01:55:43,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/d64ab3ad5/7b995651c35b4a7aa19d949a44de4c74/FLAG629695bee [2022-11-03 01:55:43,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/data/d64ab3ad5/7b995651c35b4a7aa19d949a44de4c74 [2022-11-03 01:55:43,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:55:43,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:55:43,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:43,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:55:43,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:55:43,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bb6a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43, skipping insertion in model container [2022-11-03 01:55:43,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:55:43,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:44,129 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-03 01:55:44,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:44,426 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 01:55:44,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:44,537 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-03 01:55:44,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:44,629 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:55:44,693 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_8d8c901d-aa27-43ec-85b6-a671657e3bab/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-03 01:55:44,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:44,798 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:55:44,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44 WrapperNode [2022-11-03 01:55:44,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:44,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:44,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:55:44,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:55:44,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,934 INFO L138 Inliner]: procedures = 131, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 953 [2022-11-03 01:55:44,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:44,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:55:44,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:55:44,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:55:44,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:44,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:45,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:45,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:45,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:45,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:55:45,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:55:45,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:55:45,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:55:45,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (1/1) ... [2022-11-03 01:55:45,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:45,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:55:45,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:55:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:55:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:55:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:55:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:55:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:55:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:55:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:55:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:55:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:55:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:55:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:55:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:55:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:55:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:55:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:55:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:55:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:55:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:55:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:55:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:55:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:55:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:55:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:55:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:55:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:55:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:55:45,149 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:55:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:55:45,150 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:55:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:55:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:55:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:55:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 01:55:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:55:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:55:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:55:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:55:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:55:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:55:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:55:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:55:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:55:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:55:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:55:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:55:45,375 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:55:45,377 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:55:46,498 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:46,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:46,516 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:55:46,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:46 BoogieIcfgContainer [2022-11-03 01:55:46,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:46,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:46,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:46,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:46,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:43" (1/3) ... [2022-11-03 01:55:46,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e72be8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:46, skipping insertion in model container [2022-11-03 01:55:46,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:44" (2/3) ... [2022-11-03 01:55:46,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e72be8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:46, skipping insertion in model container [2022-11-03 01:55:46,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:46" (3/3) ... [2022-11-03 01:55:46,530 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2022-11-03 01:55:46,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:46,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:46,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:46,608 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;@37c90357, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:46,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-03 01:55:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 01:55:46,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:46,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 01:55:46,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash -837891348, now seen corresponding path program 1 times [2022-11-03 01:55:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:46,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982524620] [2022-11-03 01:55:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:46,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:46,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:46,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:46,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:55:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:47,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:55:47,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 01:55:47,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:47,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982524620] [2022-11-03 01:55:47,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982524620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:47,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:47,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:55:47,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236122276] [2022-11-03 01:55:47,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:47,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:55:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:55:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:55:47,213 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:47,270 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2022-11-03 01:55:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:55:47,278 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-03 01:55:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:47,292 INFO L225 Difference]: With dead ends: 509 [2022-11-03 01:55:47,296 INFO L226 Difference]: Without dead ends: 327 [2022-11-03 01:55:47,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 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 01:55:47,314 INFO L413 NwaCegarLoop]: 495 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, 495 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 01:55:47,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-03 01:55:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-03 01:55:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 01:55:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2022-11-03 01:55:47,390 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2022-11-03 01:55:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2022-11-03 01:55:47,392 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2022-11-03 01:55:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 01:55:47,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:47,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-03 01:55:47,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:47,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1242856840, now seen corresponding path program 1 times [2022-11-03 01:55:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:47,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753835179] [2022-11-03 01:55:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:47,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:47,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:47,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:55:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:47,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:55:47,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 01:55:48,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:48,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753835179] [2022-11-03 01:55:48,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753835179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:48,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:48,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143884159] [2022-11-03 01:55:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:48,065 INFO L87 Difference]: Start difference. First operand 327 states and 487 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:48,194 INFO L93 Difference]: Finished difference Result 645 states and 964 transitions. [2022-11-03 01:55:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:48,195 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2022-11-03 01:55:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:48,199 INFO L225 Difference]: With dead ends: 645 [2022-11-03 01:55:48,199 INFO L226 Difference]: Without dead ends: 329 [2022-11-03 01:55:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 01:55:48,202 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:48,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1759 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-03 01:55:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-11-03 01:55:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 257 states have internal predecessors, (381), 54 states have call successors, (54), 20 states have call predecessors, (54), 21 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2022-11-03 01:55:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 490 transitions. [2022-11-03 01:55:48,233 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 490 transitions. Word has length 115 [2022-11-03 01:55:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:48,233 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 490 transitions. [2022-11-03 01:55:48,233 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 490 transitions. [2022-11-03 01:55:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 01:55:48,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:48,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:48,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:48,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:48,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1311826027, now seen corresponding path program 1 times [2022-11-03 01:55:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649820684] [2022-11-03 01:55:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:48,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:48,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:55:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:48,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:55:48,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 01:55:48,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:48,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649820684] [2022-11-03 01:55:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649820684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:48,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952778724] [2022-11-03 01:55:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:48,852 INFO L87 Difference]: Start difference. First operand 329 states and 490 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:48,950 INFO L93 Difference]: Finished difference Result 647 states and 968 transitions. [2022-11-03 01:55:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:48,951 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2022-11-03 01:55:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:48,954 INFO L225 Difference]: With dead ends: 647 [2022-11-03 01:55:48,955 INFO L226 Difference]: Without dead ends: 331 [2022-11-03 01:55:48,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 01:55:48,957 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1748 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 01:55:48,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1748 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-03 01:55:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-11-03 01:55:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 259 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-11-03 01:55:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 495 transitions. [2022-11-03 01:55:48,989 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 495 transitions. Word has length 116 [2022-11-03 01:55:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:48,989 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 495 transitions. [2022-11-03 01:55:48,990 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 495 transitions. [2022-11-03 01:55:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 01:55:48,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:48,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:49,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:49,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:49,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash -801730096, now seen corresponding path program 1 times [2022-11-03 01:55:49,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:49,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032482120] [2022-11-03 01:55:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:49,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:49,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:55:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:49,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:55:49,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:55:49,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:49,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:49,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032482120] [2022-11-03 01:55:49,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032482120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:49,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:49,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71207963] [2022-11-03 01:55:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:49,677 INFO L87 Difference]: Start difference. First operand 331 states and 495 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:49,773 INFO L93 Difference]: Finished difference Result 639 states and 958 transitions. [2022-11-03 01:55:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:49,774 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2022-11-03 01:55:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:49,777 INFO L225 Difference]: With dead ends: 639 [2022-11-03 01:55:49,778 INFO L226 Difference]: Without dead ends: 331 [2022-11-03 01:55:49,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 01:55:49,785 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 131 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1762 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 01:55:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1762 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-03 01:55:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-11-03 01:55:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 259 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-03 01:55:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 494 transitions. [2022-11-03 01:55:49,816 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 494 transitions. Word has length 117 [2022-11-03 01:55:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:49,817 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 494 transitions. [2022-11-03 01:55:49,817 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 494 transitions. [2022-11-03 01:55:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 01:55:49,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:49,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:49,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:50,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -538512133, now seen corresponding path program 2 times [2022-11-03 01:55:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:50,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617376486] [2022-11-03 01:55:50,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:55:50,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:50,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:50,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:50,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:55:50,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 01:55:50,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:50,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:55:50,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 01:55:50,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:50,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:50,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617376486] [2022-11-03 01:55:50,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617376486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:50,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:50,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577776732] [2022-11-03 01:55:50,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:50,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:50,363 INFO L87 Difference]: Start difference. First operand 331 states and 494 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:50,398 INFO L93 Difference]: Finished difference Result 503 states and 732 transitions. [2022-11-03 01:55:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:50,399 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-03 01:55:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:50,403 INFO L225 Difference]: With dead ends: 503 [2022-11-03 01:55:50,404 INFO L226 Difference]: Without dead ends: 334 [2022-11-03 01:55:50,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 01:55:50,407 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 01:55:50,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-03 01:55:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2022-11-03 01:55:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 256 states have (on average 1.5) internal successors, (384), 261 states have internal predecessors, (384), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-03 01:55:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 496 transitions. [2022-11-03 01:55:50,449 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 496 transitions. Word has length 118 [2022-11-03 01:55:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:50,450 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 496 transitions. [2022-11-03 01:55:50,450 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 496 transitions. [2022-11-03 01:55:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 01:55:50,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:50,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:50,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:50,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -263493832, now seen corresponding path program 1 times [2022-11-03 01:55:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:50,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52507314] [2022-11-03 01:55:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:50,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:50,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:50,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:50,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:55:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:51,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:55:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:55:51,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:51,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52507314] [2022-11-03 01:55:51,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52507314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:51,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:51,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929349280] [2022-11-03 01:55:51,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:51,086 INFO L87 Difference]: Start difference. First operand 333 states and 496 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:51,169 INFO L93 Difference]: Finished difference Result 645 states and 965 transitions. [2022-11-03 01:55:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:51,170 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2022-11-03 01:55:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,173 INFO L225 Difference]: With dead ends: 645 [2022-11-03 01:55:51,173 INFO L226 Difference]: Without dead ends: 335 [2022-11-03 01:55:51,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 01:55:51,175 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 129 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1764 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 01:55:51,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1764 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-03 01:55:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-03 01:55:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 263 states have internal predecessors, (385), 54 states have call successors, (54), 20 states have call predecessors, (54), 23 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2022-11-03 01:55:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 499 transitions. [2022-11-03 01:55:51,199 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 499 transitions. Word has length 127 [2022-11-03 01:55:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:51,200 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 499 transitions. [2022-11-03 01:55:51,200 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, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 499 transitions. [2022-11-03 01:55:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 01:55:51,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:51,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:51,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:51,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1824072322, now seen corresponding path program 1 times [2022-11-03 01:55:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301243593] [2022-11-03 01:55:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:51,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:51,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:51,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:55:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:51,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:55:51,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 01:55:51,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:51,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:51,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301243593] [2022-11-03 01:55:51,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301243593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:51,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:51,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848186118] [2022-11-03 01:55:51,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:51,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:51,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:51,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:51,796 INFO L87 Difference]: Start difference. First operand 335 states and 499 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:51,913 INFO L93 Difference]: Finished difference Result 643 states and 960 transitions. [2022-11-03 01:55:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:51,914 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2022-11-03 01:55:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,918 INFO L225 Difference]: With dead ends: 643 [2022-11-03 01:55:51,918 INFO L226 Difference]: Without dead ends: 335 [2022-11-03 01:55:51,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 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 01:55:51,921 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 130 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1751 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 01:55:51,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1751 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-03 01:55:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-03 01:55:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 263 states have internal predecessors, (385), 54 states have call successors, (54), 20 states have call predecessors, (54), 23 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-11-03 01:55:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 498 transitions. [2022-11-03 01:55:51,966 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 498 transitions. Word has length 128 [2022-11-03 01:55:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:51,967 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 498 transitions. [2022-11-03 01:55:51,967 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 498 transitions. [2022-11-03 01:55:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 01:55:51,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:51,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:51,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:52,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash -293288647, now seen corresponding path program 2 times [2022-11-03 01:55:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:52,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080493321] [2022-11-03 01:55:52,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:55:52,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:52,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:52,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:55:52,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 01:55:52,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:52,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:55:52,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 01:55:52,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:52,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:52,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080493321] [2022-11-03 01:55:52,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080493321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:52,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:52,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:55:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831895171] [2022-11-03 01:55:52,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:52,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:52,576 INFO L87 Difference]: Start difference. First operand 335 states and 498 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:52,713 INFO L93 Difference]: Finished difference Result 645 states and 965 transitions. [2022-11-03 01:55:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:52,714 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2022-11-03 01:55:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:52,717 INFO L225 Difference]: With dead ends: 645 [2022-11-03 01:55:52,717 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 01:55:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 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 01:55:52,719 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 128 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1753 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 01:55:52,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1753 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 01:55:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-11-03 01:55:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 258 states have (on average 1.496124031007752) internal successors, (386), 265 states have internal predecessors, (386), 54 states have call successors, (54), 20 states have call predecessors, (54), 24 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2022-11-03 01:55:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2022-11-03 01:55:52,746 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 129 [2022-11-03 01:55:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:52,746 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2022-11-03 01:55:52,747 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2022-11-03 01:55:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 01:55:52,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:52,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:52,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:52,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1462379001, now seen corresponding path program 1 times [2022-11-03 01:55:52,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122654185] [2022-11-03 01:55:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:52,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:52,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:52,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:55:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:53,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:55:53,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:55:53,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:53,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:53,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122654185] [2022-11-03 01:55:53,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122654185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:53,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:53,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:55:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429602061] [2022-11-03 01:55:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:55:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:55:53,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:55:53,313 INFO L87 Difference]: Start difference. First operand 337 states and 503 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:53,373 INFO L93 Difference]: Finished difference Result 705 states and 1067 transitions. [2022-11-03 01:55:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:55:53,373 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2022-11-03 01:55:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:53,377 INFO L225 Difference]: With dead ends: 705 [2022-11-03 01:55:53,377 INFO L226 Difference]: Without dead ends: 399 [2022-11-03 01:55:53,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 01:55:53,382 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 115 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 954 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 01:55:53,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-03 01:55:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 391. [2022-11-03 01:55:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2022-11-03 01:55:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2022-11-03 01:55:53,442 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2022-11-03 01:55:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:53,444 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2022-11-03 01:55:53,444 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:55:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2022-11-03 01:55:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 01:55:53,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:53,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:53,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:53,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:53,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash 606209165, now seen corresponding path program 1 times [2022-11-03 01:55:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075682553] [2022-11-03 01:55:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:53,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:53,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:53,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:53,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:55:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:55:53,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:55:54,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:54,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075682553] [2022-11-03 01:55:54,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075682553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:54,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:54,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075822483] [2022-11-03 01:55:54,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:54,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:54,054 INFO L87 Difference]: Start difference. First operand 391 states and 597 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:54,255 INFO L93 Difference]: Finished difference Result 902 states and 1398 transitions. [2022-11-03 01:55:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:55:54,256 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-11-03 01:55:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:54,260 INFO L225 Difference]: With dead ends: 902 [2022-11-03 01:55:54,260 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 01:55:54,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 01:55:54,262 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 584 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:54,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1136 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:55:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 01:55:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 399. [2022-11-03 01:55:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 308 states have (on average 1.5) internal successors, (462), 314 states have internal predecessors, (462), 65 states have call successors, (65), 22 states have call predecessors, (65), 25 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2022-11-03 01:55:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 599 transitions. [2022-11-03 01:55:54,312 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 599 transitions. Word has length 131 [2022-11-03 01:55:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:54,313 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 599 transitions. [2022-11-03 01:55:54,313 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, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:55:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 599 transitions. [2022-11-03 01:55:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 01:55:54,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:54,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:54,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-03 01:55:54,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:54,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash 14563746, now seen corresponding path program 1 times [2022-11-03 01:55:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312705673] [2022-11-03 01:55:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:54,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:54,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:54,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:54,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:55:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:55:54,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:55:54,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:55:55,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:55,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312705673] [2022-11-03 01:55:55,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312705673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:55,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1010812355] [2022-11-03 01:55:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:55,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:55,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 01:55:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:55,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:55:55,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:55:56,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:56,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1010812355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:56,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:55:56,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 16 [2022-11-03 01:55:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470392786] [2022-11-03 01:55:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:56,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:55:56,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:55:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:55:56,044 INFO L87 Difference]: Start difference. First operand 399 states and 599 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 01:55:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:58,499 INFO L93 Difference]: Finished difference Result 1219 states and 1822 transitions. [2022-11-03 01:55:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:55:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 132 [2022-11-03 01:55:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:58,505 INFO L225 Difference]: With dead ends: 1219 [2022-11-03 01:55:58,505 INFO L226 Difference]: Without dead ends: 1058 [2022-11-03 01:55:58,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:55:58,508 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1018 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:58,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 5890 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:55:58,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-03 01:55:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1021. [2022-11-03 01:55:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 783 states have (on average 1.48786717752235) internal successors, (1165), 798 states have internal predecessors, (1165), 177 states have call successors, (177), 53 states have call predecessors, (177), 60 states have return successors, (207), 177 states have call predecessors, (207), 174 states have call successors, (207) [2022-11-03 01:55:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1549 transitions. [2022-11-03 01:55:58,667 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1549 transitions. Word has length 132 [2022-11-03 01:55:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:58,668 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1549 transitions. [2022-11-03 01:55:58,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 01:55:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1549 transitions. [2022-11-03 01:55:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:55:58,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:58,673 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:58,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:58,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-03 01:55:59,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:59,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1610095755, now seen corresponding path program 1 times [2022-11-03 01:55:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:59,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623022916] [2022-11-03 01:55:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:59,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:59,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:59,089 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:59,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:55:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:59,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:55:59,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:55:59,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:55:59,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623022916] [2022-11-03 01:55:59,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623022916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213177952] [2022-11-03 01:55:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:59,496 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:59,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:59,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 01:55:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:59,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:55:59,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:56:00,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:00,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213177952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:00,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:00,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 12 [2022-11-03 01:56:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364828914] [2022-11-03 01:56:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:56:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:56:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:56:00,120 INFO L87 Difference]: Start difference. First operand 1021 states and 1549 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-03 01:56:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:00,862 INFO L93 Difference]: Finished difference Result 2332 states and 3508 transitions. [2022-11-03 01:56:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:56:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 133 [2022-11-03 01:56:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:00,870 INFO L225 Difference]: With dead ends: 2332 [2022-11-03 01:56:00,870 INFO L226 Difference]: Without dead ends: 1239 [2022-11-03 01:56:00,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:56:00,876 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 939 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:00,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2930 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:56:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-03 01:56:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1104. [2022-11-03 01:56:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 839 states have (on average 1.4696066746126342) internal successors, (1233), 855 states have internal predecessors, (1233), 204 states have call successors, (204), 56 states have call predecessors, (204), 60 states have return successors, (236), 203 states have call predecessors, (236), 201 states have call successors, (236) [2022-11-03 01:56:01,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1673 transitions. [2022-11-03 01:56:01,032 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1673 transitions. Word has length 133 [2022-11-03 01:56:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:01,032 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1673 transitions. [2022-11-03 01:56:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-03 01:56:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1673 transitions. [2022-11-03 01:56:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:56:01,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:01,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:01,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-11-03 01:56:01,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:01,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:01,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -266834589, now seen corresponding path program 1 times [2022-11-03 01:56:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781556886] [2022-11-03 01:56:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:01,443 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:01,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:56:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:01,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:01,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:01,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:01,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:01,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781556886] [2022-11-03 01:56:01,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781556886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:01,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043279846] [2022-11-03 01:56:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:01,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:01,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:01,859 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:01,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 01:56:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:56:02,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:56:02,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:02,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043279846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:02,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:02,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 16 [2022-11-03 01:56:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160596281] [2022-11-03 01:56:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:02,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:56:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:56:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:56:02,771 INFO L87 Difference]: Start difference. First operand 1104 states and 1673 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 01:56:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:05,170 INFO L93 Difference]: Finished difference Result 3087 states and 4641 transitions. [2022-11-03 01:56:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:56:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 133 [2022-11-03 01:56:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:05,190 INFO L225 Difference]: With dead ends: 3087 [2022-11-03 01:56:05,191 INFO L226 Difference]: Without dead ends: 2582 [2022-11-03 01:56:05,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:56:05,195 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 1337 mSDsluCounter, 4052 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:05,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 4702 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 01:56:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-11-03 01:56:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2456. [2022-11-03 01:56:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1861 states have (on average 1.4631918323481998) internal successors, (2723), 1897 states have internal predecessors, (2723), 464 states have call successors, (464), 122 states have call predecessors, (464), 130 states have return successors, (556), 463 states have call predecessors, (556), 457 states have call successors, (556) [2022-11-03 01:56:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3743 transitions. [2022-11-03 01:56:05,539 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3743 transitions. Word has length 133 [2022-11-03 01:56:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:05,540 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 3743 transitions. [2022-11-03 01:56:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 01:56:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3743 transitions. [2022-11-03 01:56:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:56:05,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:05,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:05,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:05,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:05,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1661438113, now seen corresponding path program 1 times [2022-11-03 01:56:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:05,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502454056] [2022-11-03 01:56:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:05,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:05,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:05,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:05,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 01:56:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:06,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:06,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:06,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502454056] [2022-11-03 01:56:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502454056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475190760] [2022-11-03 01:56:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:06,372 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:06,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:06,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 01:56:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:06,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:56:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 01:56:06,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 01:56:07,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [475190760] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:07,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:07,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 5] total 14 [2022-11-03 01:56:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369985490] [2022-11-03 01:56:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:07,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:56:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:56:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:07,213 INFO L87 Difference]: Start difference. First operand 2456 states and 3743 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:56:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:08,587 INFO L93 Difference]: Finished difference Result 8084 states and 11975 transitions. [2022-11-03 01:56:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:56:08,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-03 01:56:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:08,629 INFO L225 Difference]: With dead ends: 8084 [2022-11-03 01:56:08,629 INFO L226 Difference]: Without dead ends: 6636 [2022-11-03 01:56:08,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:56:08,637 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1077 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:08,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2142 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:56:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2022-11-03 01:56:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6590. [2022-11-03 01:56:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 4959 states have (on average 1.4222625529340593) internal successors, (7053), 5079 states have internal predecessors, (7053), 1186 states have call successors, (1186), 374 states have call predecessors, (1186), 444 states have return successors, (1527), 1214 states have call predecessors, (1527), 1158 states have call successors, (1527) [2022-11-03 01:56:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9766 transitions. [2022-11-03 01:56:09,651 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9766 transitions. Word has length 133 [2022-11-03 01:56:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:09,651 INFO L495 AbstractCegarLoop]: Abstraction has 6590 states and 9766 transitions. [2022-11-03 01:56:09,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:56:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9766 transitions. [2022-11-03 01:56:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 01:56:09,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:09,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:09,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-11-03 01:56:09,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-03 01:56:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:10,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1366866348, now seen corresponding path program 1 times [2022-11-03 01:56:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:10,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638716234] [2022-11-03 01:56:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:10,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:10,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:10,066 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:10,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 01:56:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:10,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:10,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:10,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638716234] [2022-11-03 01:56:10,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638716234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1631907168] [2022-11-03 01:56:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:10,495 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:10,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 01:56:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:10,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:56:10,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 01:56:11,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:11,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1631907168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:11,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:11,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 15 [2022-11-03 01:56:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622694054] [2022-11-03 01:56:11,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:56:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:56:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:56:11,021 INFO L87 Difference]: Start difference. First operand 6590 states and 9766 transitions. Second operand has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 01:56:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:12,248 INFO L93 Difference]: Finished difference Result 10901 states and 16020 transitions. [2022-11-03 01:56:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:56:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 134 [2022-11-03 01:56:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:12,276 INFO L225 Difference]: With dead ends: 10901 [2022-11-03 01:56:12,276 INFO L226 Difference]: Without dead ends: 5391 [2022-11-03 01:56:12,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:56:12,293 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 325 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:12,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 4374 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:56:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2022-11-03 01:56:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5183. [2022-11-03 01:56:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 3913 states have (on average 1.431638129312548) internal successors, (5602), 4020 states have internal predecessors, (5602), 914 states have call successors, (914), 294 states have call predecessors, (914), 355 states have return successors, (1216), 929 states have call predecessors, (1216), 893 states have call successors, (1216) [2022-11-03 01:56:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7732 transitions. [2022-11-03 01:56:13,160 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7732 transitions. Word has length 134 [2022-11-03 01:56:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:13,161 INFO L495 AbstractCegarLoop]: Abstraction has 5183 states and 7732 transitions. [2022-11-03 01:56:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 01:56:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7732 transitions. [2022-11-03 01:56:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 01:56:13,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:13,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:13,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:13,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:13,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:13,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -87145624, now seen corresponding path program 1 times [2022-11-03 01:56:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:13,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007007325] [2022-11-03 01:56:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:13,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:13,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:13,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 01:56:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:13,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:13,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:14,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007007325] [2022-11-03 01:56:14,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007007325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [562492608] [2022-11-03 01:56:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:14,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:14,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:14,041 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:14,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-03 01:56:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:14,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:56:14,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:56:14,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [562492608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:14,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-03 01:56:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840371019] [2022-11-03 01:56:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:56:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:56:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:56:14,457 INFO L87 Difference]: Start difference. First operand 5183 states and 7732 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:56:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:15,755 INFO L93 Difference]: Finished difference Result 12193 states and 18331 transitions. [2022-11-03 01:56:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:56:15,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2022-11-03 01:56:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:15,795 INFO L225 Difference]: With dead ends: 12193 [2022-11-03 01:56:15,795 INFO L226 Difference]: Without dead ends: 7910 [2022-11-03 01:56:15,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:56:15,810 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 190 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:15,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1765 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:56:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2022-11-03 01:56:16,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 5138. [2022-11-03 01:56:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3900 states have (on average 1.426153846153846) internal successors, (5562), 4003 states have internal predecessors, (5562), 883 states have call successors, (883), 294 states have call predecessors, (883), 354 states have return successors, (1178), 898 states have call predecessors, (1178), 862 states have call successors, (1178) [2022-11-03 01:56:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 7623 transitions. [2022-11-03 01:56:16,529 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 7623 transitions. Word has length 143 [2022-11-03 01:56:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:16,530 INFO L495 AbstractCegarLoop]: Abstraction has 5138 states and 7623 transitions. [2022-11-03 01:56:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:56:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 7623 transitions. [2022-11-03 01:56:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 01:56:16,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:16,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:16,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:16,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-03 01:56:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:16,942 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1261075540, now seen corresponding path program 1 times [2022-11-03 01:56:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18570322] [2022-11-03 01:56:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:16,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:16,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:16,944 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:16,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 01:56:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:17,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:17,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:17,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:17,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18570322] [2022-11-03 01:56:17,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18570322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1509591270] [2022-11-03 01:56:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:17,379 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:17,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 01:56:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:56:17,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 01:56:17,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:17,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1509591270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:17,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:17,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 13 [2022-11-03 01:56:17,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352521799] [2022-11-03 01:56:17,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:17,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:56:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:56:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:56:17,847 INFO L87 Difference]: Start difference. First operand 5138 states and 7623 transitions. Second operand has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 01:56:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:19,000 INFO L93 Difference]: Finished difference Result 8268 states and 11991 transitions. [2022-11-03 01:56:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:56:19,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2022-11-03 01:56:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:19,024 INFO L225 Difference]: With dead ends: 8268 [2022-11-03 01:56:19,024 INFO L226 Difference]: Without dead ends: 4622 [2022-11-03 01:56:19,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:56:19,039 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 187 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:19,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 3609 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:56:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-11-03 01:56:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4565. [2022-11-03 01:56:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 3480 states have (on average 1.4272988505747126) internal successors, (4967), 3569 states have internal predecessors, (4967), 744 states have call successors, (744), 280 states have call predecessors, (744), 340 states have return successors, (994), 760 states have call predecessors, (994), 724 states have call successors, (994) [2022-11-03 01:56:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6705 transitions. [2022-11-03 01:56:19,992 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6705 transitions. Word has length 143 [2022-11-03 01:56:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:19,992 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 6705 transitions. [2022-11-03 01:56:19,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 01:56:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6705 transitions. [2022-11-03 01:56:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 01:56:20,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:20,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:20,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:20,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:20,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1442275579, now seen corresponding path program 1 times [2022-11-03 01:56:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:20,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276870946] [2022-11-03 01:56:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:20,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:20,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:20,410 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:20,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 01:56:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:20,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:56:20,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:20,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:20,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:20,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276870946] [2022-11-03 01:56:20,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276870946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1039711139] [2022-11-03 01:56:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:20,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:20,787 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:20,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 01:56:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:21,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:56:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 01:56:21,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:21,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1039711139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:21,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:56:21,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-03 01:56:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27770413] [2022-11-03 01:56:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:21,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:56:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:56:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:56:21,182 INFO L87 Difference]: Start difference. First operand 4565 states and 6705 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:56:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:21,648 INFO L93 Difference]: Finished difference Result 5848 states and 8425 transitions. [2022-11-03 01:56:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:56:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2022-11-03 01:56:21,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:21,662 INFO L225 Difference]: With dead ends: 5848 [2022-11-03 01:56:21,662 INFO L226 Difference]: Without dead ends: 3745 [2022-11-03 01:56:21,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:56:21,669 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 9 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:21,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1884 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:56:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-11-03 01:56:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3678. [2022-11-03 01:56:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 2831 states have (on average 1.4450724125750618) internal successors, (4091), 2896 states have internal predecessors, (4091), 549 states have call successors, (549), 251 states have call predecessors, (549), 297 states have return successors, (716), 562 states have call predecessors, (716), 530 states have call successors, (716) [2022-11-03 01:56:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5356 transitions. [2022-11-03 01:56:22,214 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5356 transitions. Word has length 143 [2022-11-03 01:56:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:22,215 INFO L495 AbstractCegarLoop]: Abstraction has 3678 states and 5356 transitions. [2022-11-03 01:56:22,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:56:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5356 transitions. [2022-11-03 01:56:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 01:56:22,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:22,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:22,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:22,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:22,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:22,638 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1724559246, now seen corresponding path program 1 times [2022-11-03 01:56:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:22,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123726489] [2022-11-03 01:56:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:22,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:22,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:22,641 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:22,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 01:56:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:22,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:56:22,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:22,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:22,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:22,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123726489] [2022-11-03 01:56:22,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123726489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:22,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:22,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108443345] [2022-11-03 01:56:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:23,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:23,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:23,004 INFO L87 Difference]: Start difference. First operand 3678 states and 5356 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:23,575 INFO L93 Difference]: Finished difference Result 7929 states and 11696 transitions. [2022-11-03 01:56:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:23,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-03 01:56:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:23,593 INFO L225 Difference]: With dead ends: 7929 [2022-11-03 01:56:23,593 INFO L226 Difference]: Without dead ends: 4292 [2022-11-03 01:56:23,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 01:56:23,604 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 109 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 987 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 01:56:23,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 987 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:56:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2022-11-03 01:56:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4170. [2022-11-03 01:56:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 3223 states have (on average 1.4703692212224635) internal successors, (4739), 3288 states have internal predecessors, (4739), 649 states have call successors, (649), 251 states have call predecessors, (649), 297 states have return successors, (856), 662 states have call predecessors, (856), 630 states have call successors, (856) [2022-11-03 01:56:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6244 transitions. [2022-11-03 01:56:24,217 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6244 transitions. Word has length 161 [2022-11-03 01:56:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:24,218 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6244 transitions. [2022-11-03 01:56:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6244 transitions. [2022-11-03 01:56:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 01:56:24,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:24,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:24,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 01:56:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:24,443 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2058532675, now seen corresponding path program 1 times [2022-11-03 01:56:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:24,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268913640] [2022-11-03 01:56:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:24,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:24,445 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:24,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8c901d-aa27-43ec-85b6-a671657e3bab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 01:56:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:56:24,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:56:24,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:56:24,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:24,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268913640] [2022-11-03 01:56:24,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268913640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:56:24,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:56:24,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:56:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71992280] [2022-11-03 01:56:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:24,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:56:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:56:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:24,813 INFO L87 Difference]: Start difference. First operand 4170 states and 6244 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:25,615 INFO L93 Difference]: Finished difference Result 9397 states and 14320 transitions. [2022-11-03 01:56:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:56:25,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2022-11-03 01:56:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:25,644 INFO L225 Difference]: With dead ends: 9397 [2022-11-03 01:56:25,644 INFO L226 Difference]: Without dead ends: 5268 [2022-11-03 01:56:25,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:56:25,658 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 107 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 975 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 01:56:25,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:56:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-11-03 01:56:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5146. [2022-11-03 01:56:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 4015 states have (on average 1.501120797011208) internal successors, (6027), 4080 states have internal predecessors, (6027), 833 states have call successors, (833), 251 states have call predecessors, (833), 297 states have return successors, (1112), 846 states have call predecessors, (1112), 814 states have call successors, (1112) [2022-11-03 01:56:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7972 transitions. [2022-11-03 01:56:26,587 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7972 transitions. Word has length 162 [2022-11-03 01:56:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:26,588 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7972 transitions. [2022-11-03 01:56:26,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:56:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7972 transitions.