./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0 --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 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec --- 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-e04fb08 [2022-11-16 16:08:10,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:08:10,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:08:11,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:08:11,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:08:11,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:08:11,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:08:11,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:08:11,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:08:11,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:08:11,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:08:11,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:08:11,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:08:11,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:08:11,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:08:11,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:08:11,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:08:11,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:08:11,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:08:11,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:08:11,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:08:11,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:08:11,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:08:11,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:08:11,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:08:11,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:08:11,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:08:11,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:08:11,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:08:11,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:08:11,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:08:11,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:08:11,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:08:11,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:08:11,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:08:11,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:08:11,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:08:11,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:08:11,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:08:11,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:08:11,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:08:11,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:08:11,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:08:11,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:08:11,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:08:11,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:08:11,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:08:11,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:08:11,145 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:08:11,145 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:08:11,145 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:08:11,146 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:08:11,147 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:08:11,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:08:11,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:08:11,148 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:08:11,148 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:08:11,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:08:11,149 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:08:11,149 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:08:11,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:08:11,150 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:08:11,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:08:11,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:08:11,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:08:11,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:08:11,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:08:11,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:08:11,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:08:11,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:08:11,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:08:11,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:08:11,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:08:11,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:08:11,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:08:11,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:08:11,156 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:08:11,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:08:11,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:08:11,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:08:11,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:08:11,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:08:11,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:08:11,158 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec [2022-11-16 16:08:11,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:08:11,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:08:11,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:08:11,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:08:11,484 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:08:11,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-11-16 16:08:11,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/3d2c97fde/96cc40e6c9294702a1b6c74a9bf6d9a7/FLAG958c33a0f [2022-11-16 16:08:12,204 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:08:12,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-11-16 16:08:12,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/3d2c97fde/96cc40e6c9294702a1b6c74a9bf6d9a7/FLAG958c33a0f [2022-11-16 16:08:12,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/3d2c97fde/96cc40e6c9294702a1b6c74a9bf6d9a7 [2022-11-16 16:08:12,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:08:12,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:08:12,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:08:12,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:08:12,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:08:12,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:08:12" (1/1) ... [2022-11-16 16:08:12,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25acd174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:12, skipping insertion in model container [2022-11-16 16:08:12,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:08:12" (1/1) ... [2022-11-16 16:08:12,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:08:12,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:08:12,753 WARN L229 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-11-16 16:08:13,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:08:13,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:08:13,268 WARN L229 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-11-16 16:08:13,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:08:13,420 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:08:13,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13 WrapperNode [2022-11-16 16:08:13,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:08:13,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:08:13,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:08:13,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:08:13,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,547 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1096 [2022-11-16 16:08:13,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:08:13,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:08:13,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:08:13,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:08:13,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:08:13,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:08:13,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:08:13,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:08:13,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (1/1) ... [2022-11-16 16:08:13,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:08:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:13,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:08:13,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:08:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 16:08:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 16:08:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 16:08:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 16:08:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 16:08:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 16:08:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 16:08:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 16:08:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 16:08:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 16:08:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 16:08:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 16:08:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 16:08:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 16:08:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 16:08:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 16:08:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 16:08:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 16:08:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 16:08:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 16:08:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-16 16:08:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-16 16:08:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 16:08:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 16:08:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 16:08:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 16:08:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 16:08:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 16:08:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 16:08:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:08:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-16 16:08:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-16 16:08:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 16:08:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 16:08:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 16:08:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 16:08:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 16:08:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 16:08:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 16:08:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 16:08:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 16:08:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 16:08:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-16 16:08:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-16 16:08:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-16 16:08:13,804 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-16 16:08:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 16:08:13,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 16:08:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 16:08:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 16:08:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 16:08:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 16:08:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 16:08:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 16:08:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:08:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 16:08:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 16:08:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 16:08:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 16:08:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:08:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:08:14,054 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:08:14,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:08:15,277 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:08:15,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:08:15,948 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:08:15,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:08:15 BoogieIcfgContainer [2022-11-16 16:08:15,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:08:15,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:08:15,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:08:15,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:08:15,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:08:12" (1/3) ... [2022-11-16 16:08:15,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a7198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:08:15, skipping insertion in model container [2022-11-16 16:08:15,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:13" (2/3) ... [2022-11-16 16:08:15,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a7198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:08:15, skipping insertion in model container [2022-11-16 16:08:15,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:08:15" (3/3) ... [2022-11-16 16:08:15,965 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product34.cil.c [2022-11-16 16:08:15,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:08:15,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:08:16,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:08:16,088 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;@69fa7151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:08:16,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:08:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-16 16:08:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 16:08:16,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:16,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:16,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:08:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2085917459, now seen corresponding path program 1 times [2022-11-16 16:08:16,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062740620] [2022-11-16 16:08:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:16,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:16,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:16,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062740620] [2022-11-16 16:08:16,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062740620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:16,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:16,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:08:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593090977] [2022-11-16 16:08:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:08:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:08:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:08:16,717 INFO L87 Difference]: Start difference. First operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:16,936 INFO L93 Difference]: Finished difference Result 370 states and 491 transitions. [2022-11-16 16:08:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:08:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-16 16:08:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:16,962 INFO L225 Difference]: With dead ends: 370 [2022-11-16 16:08:16,963 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 16:08:16,975 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 [2022-11-16 16:08:16,981 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:16,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 16:08:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-16 16:08:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 128 states have (on average 1.265625) internal successors, (162), 132 states have internal predecessors, (162), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-16 16:08:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 303 transitions. [2022-11-16 16:08:17,062 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 303 transitions. Word has length 75 [2022-11-16 16:08:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:17,063 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 303 transitions. [2022-11-16 16:08:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 303 transitions. [2022-11-16 16:08:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 16:08:17,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:17,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:08:17,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:08:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -974911515, now seen corresponding path program 1 times [2022-11-16 16:08:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614081848] [2022-11-16 16:08:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:17,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614081848] [2022-11-16 16:08:17,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614081848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:17,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:17,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:08:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131683007] [2022-11-16 16:08:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:17,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:17,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:08:17,330 INFO L87 Difference]: Start difference. First operand 228 states and 303 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:17,512 INFO L93 Difference]: Finished difference Result 366 states and 476 transitions. [2022-11-16 16:08:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:17,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-16 16:08:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:17,518 INFO L225 Difference]: With dead ends: 366 [2022-11-16 16:08:17,519 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 16:08:17,524 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 [2022-11-16 16:08:17,526 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:17,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 16:08:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-16 16:08:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-16 16:08:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2022-11-16 16:08:17,583 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 76 [2022-11-16 16:08:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:17,583 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2022-11-16 16:08:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2022-11-16 16:08:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 16:08:17,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:17,587 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] [2022-11-16 16:08:17,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:08:17,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:08:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash -859081256, now seen corresponding path program 1 times [2022-11-16 16:08:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:17,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704510786] [2022-11-16 16:08:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:17,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:17,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704510786] [2022-11-16 16:08:17,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704510786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:17,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:17,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:08:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774127076] [2022-11-16 16:08:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:17,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:08:17,748 INFO L87 Difference]: Start difference. First operand 230 states and 305 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:17,882 INFO L93 Difference]: Finished difference Result 495 states and 677 transitions. [2022-11-16 16:08:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-16 16:08:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:17,885 INFO L225 Difference]: With dead ends: 495 [2022-11-16 16:08:17,885 INFO L226 Difference]: Without dead ends: 283 [2022-11-16 16:08:17,886 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 [2022-11-16 16:08:17,887 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 59 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:17,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 538 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-16 16:08:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2022-11-16 16:08:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.3353658536585367) internal successors, (219), 168 states have internal predecessors, (219), 85 states have call successors, (85), 28 states have call predecessors, (85), 28 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-16 16:08:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 388 transitions. [2022-11-16 16:08:17,910 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 388 transitions. Word has length 81 [2022-11-16 16:08:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:17,910 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 388 transitions. [2022-11-16 16:08:17,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:08:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 388 transitions. [2022-11-16 16:08:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 16:08:17,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:17,913 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] [2022-11-16 16:08:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:08:17,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:08:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash 937438112, now seen corresponding path program 1 times [2022-11-16 16:08:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:17,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118883509] [2022-11-16 16:08:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:18,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118883509] [2022-11-16 16:08:18,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118883509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312048848] [2022-11-16 16:08:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:18,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:18,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:18,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:08:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:18,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:08:18,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:18,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:08:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:18,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312048848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:08:18,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815497135] [2022-11-16 16:08:18,781 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-16 16:08:18,783 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:08:18,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:08:18,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:08:18,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:08:57,141 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-16 16:08:57,438 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 480 for LOIs [2022-11-16 16:09:08,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:08,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 16:09:08,580 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 16:09:08,610 INFO L158 Benchmark]: Toolchain (without parser) took 56192.79ms. Allocated memory was 121.6MB in the beginning and 539.0MB in the end (delta: 417.3MB). Free memory was 78.6MB in the beginning and 480.0MB in the end (delta: -401.3MB). Peak memory consumption was 321.1MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,611 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:09:08,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1008.95ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 71.0MB in the end (delta: 7.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.87ms. Allocated memory is still 121.6MB. Free memory was 71.0MB in the beginning and 64.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,619 INFO L158 Benchmark]: Boogie Preprocessor took 125.10ms. Allocated memory is still 121.6MB. Free memory was 64.9MB in the beginning and 59.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,621 INFO L158 Benchmark]: RCFGBuilder took 2279.20ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 59.5MB in the beginning and 68.5MB in the end (delta: -9.0MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,622 INFO L158 Benchmark]: TraceAbstraction took 52646.70ms. Allocated memory was 155.2MB in the beginning and 539.0MB in the end (delta: 383.8MB). Free memory was 68.5MB in the beginning and 480.0MB in the end (delta: -411.4MB). Peak memory consumption was 278.5MB. Max. memory is 16.1GB. [2022-11-16 16:09:08,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1008.95ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 71.0MB in the end (delta: 7.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.87ms. Allocated memory is still 121.6MB. Free memory was 71.0MB in the beginning and 64.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.10ms. Allocated memory is still 121.6MB. Free memory was 64.9MB in the beginning and 59.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2279.20ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 59.5MB in the beginning and 68.5MB in the end (delta: -9.0MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * TraceAbstraction took 52646.70ms. Allocated memory was 155.2MB in the beginning and 539.0MB in the end (delta: 383.8MB). Free memory was 68.5MB in the beginning and 480.0MB in the end (delta: -411.4MB). Peak memory consumption was 278.5MB. 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. [2022-11-16 16:09:08,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0 --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 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec --- 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-e04fb08 [2022-11-16 16:09:10,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:09:10,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:09:10,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:09:10,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:09:10,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:09:10,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:09:10,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:09:10,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:09:10,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:09:10,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:09:10,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:09:10,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:09:10,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:09:10,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:09:10,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:09:10,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:09:10,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:09:10,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:09:10,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:09:10,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:09:10,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:09:10,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:09:10,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:09:10,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:09:10,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:09:10,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:09:10,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:09:10,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:09:10,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:09:10,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:09:10,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:09:10,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:09:10,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:09:10,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:09:10,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:09:10,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:09:10,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:09:10,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:09:10,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:09:10,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:09:10,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 16:09:11,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:09:11,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:09:11,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:09:11,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:09:11,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:09:11,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:09:11,022 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:09:11,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:09:11,023 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:09:11,023 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:09:11,024 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:09:11,024 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:09:11,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:09:11,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:09:11,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:09:11,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:09:11,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:09:11,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:09:11,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:09:11,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:09:11,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:09:11,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:09:11,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:09:11,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:09:11,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:09:11,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:09:11,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:09:11,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:09:11,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:09:11,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:09:11,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:09:11,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:09:11,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:09:11,031 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:09:11,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:09:11,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:09:11,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:09:11,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:09:11,032 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec [2022-11-16 16:09:11,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:09:11,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:09:11,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:09:11,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:09:11,403 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:09:11,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-11-16 16:09:11,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/aab1b21ae/68e7f7d1324f4278be43d24a18ee1da1/FLAGcae1a0105 [2022-11-16 16:09:12,116 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:09:12,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-11-16 16:09:12,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/aab1b21ae/68e7f7d1324f4278be43d24a18ee1da1/FLAGcae1a0105 [2022-11-16 16:09:12,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/data/aab1b21ae/68e7f7d1324f4278be43d24a18ee1da1 [2022-11-16 16:09:12,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:09:12,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:09:12,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:09:12,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:09:12,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:09:12,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:09:12" (1/1) ... [2022-11-16 16:09:12,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99f88db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:12, skipping insertion in model container [2022-11-16 16:09:12,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:09:12" (1/1) ... [2022-11-16 16:09:12,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:09:12,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:09:12,543 WARN L229 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-11-16 16:09:12,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:09:12,959 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 16:09:12,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:09:12,980 WARN L229 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-11-16 16:09:13,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:09:13,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:09:13,102 WARN L229 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_64532aa0-300c-47ca-b396-a3a4a046a1aa/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-11-16 16:09:13,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:09:13,208 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:09:13,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13 WrapperNode [2022-11-16 16:09:13,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:09:13,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:09:13,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:09:13,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:09:13,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,362 INFO L138 Inliner]: procedures = 136, calls = 237, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1033 [2022-11-16 16:09:13,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:09:13,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:09:13,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:09:13,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:09:13,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,419 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:09:13,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:09:13,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:09:13,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:09:13,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (1/1) ... [2022-11-16 16:09:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:09:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:09:13,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:09:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:09:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 16:09:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 16:09:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 16:09:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 16:09:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 16:09:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 16:09:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 16:09:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 16:09:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 16:09:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 16:09:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 16:09:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 16:09:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 16:09:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 16:09:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-16 16:09:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-16 16:09:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 16:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 16:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 16:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 16:09:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-16 16:09:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-16 16:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 16:09:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 16:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 16:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 16:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 16:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 16:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 16:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-16 16:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-16 16:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 16:09:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 16:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 16:09:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 16:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 16:09:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 16:09:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 16:09:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 16:09:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 16:09:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 16:09:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 16:09:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-16 16:09:13,528 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-16 16:09:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-16 16:09:13,529 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-16 16:09:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 16:09:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 16:09:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 16:09:13,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 16:09:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 16:09:13,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 16:09:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 16:09:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 16:09:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 16:09:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 16:09:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 16:09:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 16:09:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:09:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:09:13,818 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:09:13,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:09:14,817 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:09:14,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:09:14,829 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:09:14,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:09:14 BoogieIcfgContainer [2022-11-16 16:09:14,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:09:14,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:09:14,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:09:14,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:09:14,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:09:12" (1/3) ... [2022-11-16 16:09:14,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101bfc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:09:14, skipping insertion in model container [2022-11-16 16:09:14,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:09:13" (2/3) ... [2022-11-16 16:09:14,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101bfc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:09:14, skipping insertion in model container [2022-11-16 16:09:14,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:09:14" (3/3) ... [2022-11-16 16:09:14,840 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product34.cil.c [2022-11-16 16:09:14,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:09:14,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:09:14,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:09:14,940 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;@6bb9b91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:09:14,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:09:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 346 states have (on average 1.5375722543352601) internal successors, (532), 351 states have internal predecessors, (532), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-16 16:09:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 16:09:14,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:14,966 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, 1] [2022-11-16 16:09:14,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 469008212, now seen corresponding path program 1 times [2022-11-16 16:09:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:14,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656845807] [2022-11-16 16:09:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:14,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:14,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:15,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 16:09:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:15,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 16:09:15,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 16:09:15,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:15,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:15,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656845807] [2022-11-16 16:09:15,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656845807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:15,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:15,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:09:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789732869] [2022-11-16 16:09:15,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:09:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:09:15,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:09:15,620 INFO L87 Difference]: Start difference. First operand has 447 states, 346 states have (on average 1.5375722543352601) internal successors, (532), 351 states have internal predecessors, (532), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:15,739 INFO L93 Difference]: Finished difference Result 701 states and 1038 transitions. [2022-11-16 16:09:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:09:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-11-16 16:09:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:15,757 INFO L225 Difference]: With dead ends: 701 [2022-11-16 16:09:15,757 INFO L226 Difference]: Without dead ends: 440 [2022-11-16 16:09:15,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:09:15,771 INFO L413 NwaCegarLoop]: 670 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, 670 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 [2022-11-16 16:09:15,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-16 16:09:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2022-11-16 16:09:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 340 states have (on average 1.5323529411764707) internal successors, (521), 344 states have internal predecessors, (521), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-16 16:09:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 662 transitions. [2022-11-16 16:09:15,871 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 662 transitions. Word has length 116 [2022-11-16 16:09:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:15,873 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 662 transitions. [2022-11-16 16:09:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 662 transitions. [2022-11-16 16:09:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 16:09:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:15,879 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, 1, 1] [2022-11-16 16:09:15,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:16,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1635745970, now seen corresponding path program 1 times [2022-11-16 16:09:16,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:16,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463967675] [2022-11-16 16:09:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:16,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:16,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:16,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 16:09:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:16,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 16:09:16,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 16:09:16,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:16,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463967675] [2022-11-16 16:09:16,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463967675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:16,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:16,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359732121] [2022-11-16 16:09:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:16,576 INFO L87 Difference]: Start difference. First operand 440 states and 662 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:16,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:16,691 INFO L93 Difference]: Finished difference Result 871 states and 1314 transitions. [2022-11-16 16:09:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:16,692 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2022-11-16 16:09:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:16,696 INFO L225 Difference]: With dead ends: 871 [2022-11-16 16:09:16,697 INFO L226 Difference]: Without dead ends: 442 [2022-11-16 16:09:16,699 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 [2022-11-16 16:09:16,700 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 152 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:09:16,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2437 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-16 16:09:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-11-16 16:09:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.530791788856305) internal successors, (522), 346 states have internal predecessors, (522), 71 states have call successors, (71), 28 states have call predecessors, (71), 29 states have return successors, (72), 69 states have call predecessors, (72), 70 states have call successors, (72) [2022-11-16 16:09:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 665 transitions. [2022-11-16 16:09:16,732 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 665 transitions. Word has length 117 [2022-11-16 16:09:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:16,733 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 665 transitions. [2022-11-16 16:09:16,733 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 665 transitions. [2022-11-16 16:09:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 16:09:16,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:16,736 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, 1, 1] [2022-11-16 16:09:16,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 16:09:16,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:16,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1852429124, now seen corresponding path program 1 times [2022-11-16 16:09:16,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:16,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41003709] [2022-11-16 16:09:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:16,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:16,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:16,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:16,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 16:09:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:17,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:09:17,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 16:09:17,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:17,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:17,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41003709] [2022-11-16 16:09:17,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41003709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:17,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:17,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:17,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607234138] [2022-11-16 16:09:17,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:17,360 INFO L87 Difference]: Start difference. First operand 442 states and 665 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:17,474 INFO L93 Difference]: Finished difference Result 873 states and 1318 transitions. [2022-11-16 16:09:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2022-11-16 16:09:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:17,479 INFO L225 Difference]: With dead ends: 873 [2022-11-16 16:09:17,479 INFO L226 Difference]: Without dead ends: 444 [2022-11-16 16:09:17,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:09:17,482 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 151 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2426 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 [2022-11-16 16:09:17,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2426 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:09:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-16 16:09:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-16 16:09:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5292397660818713) internal successors, (523), 348 states have internal predecessors, (523), 71 states have call successors, (71), 28 states have call predecessors, (71), 30 states have return successors, (76), 69 states have call predecessors, (76), 70 states have call successors, (76) [2022-11-16 16:09:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 670 transitions. [2022-11-16 16:09:17,511 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 670 transitions. Word has length 118 [2022-11-16 16:09:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:17,512 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 670 transitions. [2022-11-16 16:09:17,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 670 transitions. [2022-11-16 16:09:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 16:09:17,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:17,515 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] [2022-11-16 16:09:17,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:17,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:17,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1315077925, now seen corresponding path program 1 times [2022-11-16 16:09:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:17,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924942422] [2022-11-16 16:09:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:17,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:17,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 16:09:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:18,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 16:09:18,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 16:09:18,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:18,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:18,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924942422] [2022-11-16 16:09:18,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924942422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:18,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:18,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770513048] [2022-11-16 16:09:18,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:18,141 INFO L87 Difference]: Start difference. First operand 444 states and 670 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:18,231 INFO L93 Difference]: Finished difference Result 865 states and 1308 transitions. [2022-11-16 16:09:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2022-11-16 16:09:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:18,235 INFO L225 Difference]: With dead ends: 865 [2022-11-16 16:09:18,235 INFO L226 Difference]: Without dead ends: 444 [2022-11-16 16:09:18,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:09:18,238 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 150 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2440 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 [2022-11-16 16:09:18,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2440 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-16 16:09:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-16 16:09:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5292397660818713) internal successors, (523), 348 states have internal predecessors, (523), 71 states have call successors, (71), 28 states have call predecessors, (71), 30 states have return successors, (75), 69 states have call predecessors, (75), 70 states have call successors, (75) [2022-11-16 16:09:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2022-11-16 16:09:18,284 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 119 [2022-11-16 16:09:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:18,285 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2022-11-16 16:09:18,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2022-11-16 16:09:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 16:09:18,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:18,288 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] [2022-11-16 16:09:18,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:18,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:18,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1758056601, now seen corresponding path program 2 times [2022-11-16 16:09:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:18,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671119940] [2022-11-16 16:09:18,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:09:18,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:18,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:18,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 16:09:18,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 16:09:18,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:09:18,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 16:09:18,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:18,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:18,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671119940] [2022-11-16 16:09:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671119940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:18,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166733900] [2022-11-16 16:09:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:18,795 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:18,832 INFO L93 Difference]: Finished difference Result 695 states and 1023 transitions. [2022-11-16 16:09:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-11-16 16:09:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:18,835 INFO L225 Difference]: With dead ends: 695 [2022-11-16 16:09:18,836 INFO L226 Difference]: Without dead ends: 447 [2022-11-16 16:09:18,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:18,838 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1318 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 [2022-11-16 16:09:18,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1318 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-16 16:09:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2022-11-16 16:09:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 344 states have (on average 1.5261627906976745) internal successors, (525), 350 states have internal predecessors, (525), 71 states have call successors, (71), 28 states have call predecessors, (71), 30 states have return successors, (75), 69 states have call predecessors, (75), 70 states have call successors, (75) [2022-11-16 16:09:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 671 transitions. [2022-11-16 16:09:18,887 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 671 transitions. Word has length 120 [2022-11-16 16:09:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:18,887 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 671 transitions. [2022-11-16 16:09:18,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 671 transitions. [2022-11-16 16:09:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 16:09:18,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:18,890 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] [2022-11-16 16:09:18,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:19,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1364310110, now seen corresponding path program 1 times [2022-11-16 16:09:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115921002] [2022-11-16 16:09:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:19,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:19,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 16:09:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:19,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 16:09:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 16:09:19,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:19,504 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115921002] [2022-11-16 16:09:19,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115921002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:19,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080616850] [2022-11-16 16:09:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:19,507 INFO L87 Difference]: Start difference. First operand 446 states and 671 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:19,602 INFO L93 Difference]: Finished difference Result 871 states and 1315 transitions. [2022-11-16 16:09:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-16 16:09:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:19,606 INFO L225 Difference]: With dead ends: 871 [2022-11-16 16:09:19,606 INFO L226 Difference]: Without dead ends: 448 [2022-11-16 16:09:19,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:09:19,609 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 148 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2442 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 [2022-11-16 16:09:19,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2442 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-16 16:09:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-16 16:09:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 345 states have (on average 1.5246376811594202) internal successors, (526), 352 states have internal predecessors, (526), 71 states have call successors, (71), 28 states have call predecessors, (71), 31 states have return successors, (77), 69 states have call predecessors, (77), 70 states have call successors, (77) [2022-11-16 16:09:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 674 transitions. [2022-11-16 16:09:19,655 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 674 transitions. Word has length 126 [2022-11-16 16:09:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:19,656 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 674 transitions. [2022-11-16 16:09:19,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 674 transitions. [2022-11-16 16:09:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 16:09:19,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:19,659 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] [2022-11-16 16:09:19,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:19,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 724729879, now seen corresponding path program 1 times [2022-11-16 16:09:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069218258] [2022-11-16 16:09:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:19,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:19,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 16:09:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:20,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:09:20,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:09:20,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:20,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069218258] [2022-11-16 16:09:20,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069218258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:20,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:20,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:20,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814836896] [2022-11-16 16:09:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:20,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:20,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:20,274 INFO L87 Difference]: Start difference. First operand 448 states and 674 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:20,387 INFO L93 Difference]: Finished difference Result 869 states and 1310 transitions. [2022-11-16 16:09:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:20,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2022-11-16 16:09:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:20,392 INFO L225 Difference]: With dead ends: 869 [2022-11-16 16:09:20,392 INFO L226 Difference]: Without dead ends: 448 [2022-11-16 16:09:20,396 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 [2022-11-16 16:09:20,397 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 149 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2429 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 [2022-11-16 16:09:20,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2429 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:09:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-16 16:09:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-16 16:09:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 345 states have (on average 1.5246376811594202) internal successors, (526), 352 states have internal predecessors, (526), 71 states have call successors, (71), 28 states have call predecessors, (71), 31 states have return successors, (76), 69 states have call predecessors, (76), 70 states have call successors, (76) [2022-11-16 16:09:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 673 transitions. [2022-11-16 16:09:20,425 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 673 transitions. Word has length 127 [2022-11-16 16:09:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:20,427 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 673 transitions. [2022-11-16 16:09:20,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 673 transitions. [2022-11-16 16:09:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 16:09:20,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:20,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:20,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:20,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1327167273, now seen corresponding path program 1 times [2022-11-16 16:09:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875522424] [2022-11-16 16:09:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:20,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:20,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:20,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 16:09:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:21,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:09:21,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 16:09:21,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:21,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:21,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875522424] [2022-11-16 16:09:21,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875522424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:21,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:21,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197810251] [2022-11-16 16:09:21,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:21,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:21,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:21,056 INFO L87 Difference]: Start difference. First operand 448 states and 673 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 16:09:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:21,182 INFO L93 Difference]: Finished difference Result 871 states and 1315 transitions. [2022-11-16 16:09:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2022-11-16 16:09:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:21,186 INFO L225 Difference]: With dead ends: 871 [2022-11-16 16:09:21,186 INFO L226 Difference]: Without dead ends: 450 [2022-11-16 16:09:21,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:09:21,189 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 147 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2431 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 [2022-11-16 16:09:21,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2431 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:09:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-16 16:09:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-11-16 16:09:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 346 states have (on average 1.523121387283237) internal successors, (527), 354 states have internal predecessors, (527), 71 states have call successors, (71), 28 states have call predecessors, (71), 32 states have return successors, (80), 69 states have call predecessors, (80), 70 states have call successors, (80) [2022-11-16 16:09:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 678 transitions. [2022-11-16 16:09:21,216 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 678 transitions. Word has length 147 [2022-11-16 16:09:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:21,216 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 678 transitions. [2022-11-16 16:09:21,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 16:09:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 678 transitions. [2022-11-16 16:09:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 16:09:21,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:21,219 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] [2022-11-16 16:09:21,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:21,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash -984048642, now seen corresponding path program 1 times [2022-11-16 16:09:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:21,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618796326] [2022-11-16 16:09:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:21,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:21,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:21,436 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:21,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 16:09:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:09:21,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:09:21,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:21,819 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618796326] [2022-11-16 16:09:21,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618796326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:21,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:21,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:09:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739128794] [2022-11-16 16:09:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:09:21,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:09:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:09:21,822 INFO L87 Difference]: Start difference. First operand 450 states and 678 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:21,931 INFO L93 Difference]: Finished difference Result 875 states and 1323 transitions. [2022-11-16 16:09:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:09:21,932 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2022-11-16 16:09:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:21,935 INFO L225 Difference]: With dead ends: 875 [2022-11-16 16:09:21,936 INFO L226 Difference]: Without dead ends: 452 [2022-11-16 16:09:21,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:09:21,938 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 147 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:09:21,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2429 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:09:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-16 16:09:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 450. [2022-11-16 16:09:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 346 states have (on average 1.523121387283237) internal successors, (527), 354 states have internal predecessors, (527), 71 states have call successors, (71), 28 states have call predecessors, (71), 32 states have return successors, (80), 69 states have call predecessors, (80), 70 states have call successors, (80) [2022-11-16 16:09:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 678 transitions. [2022-11-16 16:09:21,965 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 678 transitions. Word has length 129 [2022-11-16 16:09:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:21,966 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 678 transitions. [2022-11-16 16:09:21,966 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, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 16:09:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 678 transitions. [2022-11-16 16:09:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 16:09:21,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:21,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:21,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:22,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:22,189 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 296954095, now seen corresponding path program 1 times [2022-11-16 16:09:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:22,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989065804] [2022-11-16 16:09:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:22,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:22,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 16:09:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:22,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 16:09:22,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:22,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:22,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989065804] [2022-11-16 16:09:22,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989065804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:22,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:22,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024577294] [2022-11-16 16:09:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:22,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:22,572 INFO L87 Difference]: Start difference. First operand 450 states and 678 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:22,620 INFO L93 Difference]: Finished difference Result 944 states and 1442 transitions. [2022-11-16 16:09:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 148 [2022-11-16 16:09:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:22,623 INFO L225 Difference]: With dead ends: 944 [2022-11-16 16:09:22,624 INFO L226 Difference]: Without dead ends: 525 [2022-11-16 16:09:22,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:22,626 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 134 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1303 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 [2022-11-16 16:09:22,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1303 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-16 16:09:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 517. [2022-11-16 16:09:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 399 states have (on average 1.543859649122807) internal successors, (616), 407 states have internal predecessors, (616), 85 states have call successors, (85), 28 states have call predecessors, (85), 32 states have return successors, (96), 83 states have call predecessors, (96), 84 states have call successors, (96) [2022-11-16 16:09:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 797 transitions. [2022-11-16 16:09:22,667 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 797 transitions. Word has length 148 [2022-11-16 16:09:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 797 transitions. [2022-11-16 16:09:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 797 transitions. [2022-11-16 16:09:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 16:09:22,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:22,671 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] [2022-11-16 16:09:22,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:22,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1484941036, now seen corresponding path program 1 times [2022-11-16 16:09:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:22,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293694200] [2022-11-16 16:09:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:22,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:22,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:22,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 16:09:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:23,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:09:23,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:09:23,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:09:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:09:23,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293694200] [2022-11-16 16:09:23,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293694200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:09:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [181168827] [2022-11-16 16:09:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:09:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:09:23,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:09:23,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 16:09:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:23,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:09:23,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 16:09:24,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:09:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 16:09:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [181168827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:09:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923144813] [2022-11-16 16:09:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:24,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:09:24,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:09:24,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:09:24,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 16:09:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:24,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:09:24,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 16:09:24,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:09:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 16:09:25,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923144813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:09:25,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:09:25,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-16 16:09:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231216035] [2022-11-16 16:09:25,174 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:09:25,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 16:09:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 16:09:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:09:25,176 INFO L87 Difference]: Start difference. First operand 517 states and 797 transitions. Second operand has 20 states, 20 states have (on average 9.5) internal successors, (190), 18 states have internal predecessors, (190), 4 states have call successors, (45), 6 states have call predecessors, (45), 9 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-16 16:09:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:38,271 INFO L93 Difference]: Finished difference Result 2683 states and 4419 transitions. [2022-11-16 16:09:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 16:09:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 18 states have internal predecessors, (190), 4 states have call successors, (45), 6 states have call predecessors, (45), 9 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) Word has length 130 [2022-11-16 16:09:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:38,289 INFO L225 Difference]: With dead ends: 2683 [2022-11-16 16:09:38,289 INFO L226 Difference]: Without dead ends: 2433 [2022-11-16 16:09:38,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 16:09:38,292 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 3340 mSDsluCounter, 9096 mSDsCounter, 0 mSdLazyCounter, 10414 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 9928 SdHoareTripleChecker+Invalid, 11250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 10414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:09:38,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3442 Valid, 9928 Invalid, 11250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [836 Valid, 10414 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-16 16:09:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-11-16 16:09:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 1867. [2022-11-16 16:09:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1475 states have (on average 1.6128813559322035) internal successors, (2379), 1488 states have internal predecessors, (2379), 326 states have call successors, (326), 57 states have call predecessors, (326), 65 states have return successors, (393), 325 states have call predecessors, (393), 324 states have call successors, (393) [2022-11-16 16:09:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 3098 transitions. [2022-11-16 16:09:38,558 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 3098 transitions. Word has length 130 [2022-11-16 16:09:38,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:38,558 INFO L495 AbstractCegarLoop]: Abstraction has 1867 states and 3098 transitions. [2022-11-16 16:09:38,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 18 states have internal predecessors, (190), 4 states have call successors, (45), 6 states have call predecessors, (45), 9 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-16 16:09:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 3098 transitions. [2022-11-16 16:09:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 16:09:38,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:38,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:38,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:38,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-16 16:09:38,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:39,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:39,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1898162585, now seen corresponding path program 1 times [2022-11-16 16:09:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595462284] [2022-11-16 16:09:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:39,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:39,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:39,184 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:39,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 16:09:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:39,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:39,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 16:09:39,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:39,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595462284] [2022-11-16 16:09:39,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595462284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:39,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:39,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545631039] [2022-11-16 16:09:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:39,504 INFO L87 Difference]: Start difference. First operand 1867 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:39,850 INFO L93 Difference]: Finished difference Result 4455 states and 7508 transitions. [2022-11-16 16:09:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2022-11-16 16:09:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:39,866 INFO L225 Difference]: With dead ends: 4455 [2022-11-16 16:09:39,866 INFO L226 Difference]: Without dead ends: 2713 [2022-11-16 16:09:39,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:39,873 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 132 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1357 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 [2022-11-16 16:09:39,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1357 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-16 16:09:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2697. [2022-11-16 16:09:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2147 states have (on average 1.6297158826269214) internal successors, (3499), 2160 states have internal predecessors, (3499), 484 states have call successors, (484), 57 states have call predecessors, (484), 65 states have return successors, (591), 483 states have call predecessors, (591), 482 states have call successors, (591) [2022-11-16 16:09:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4574 transitions. [2022-11-16 16:09:40,281 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4574 transitions. Word has length 156 [2022-11-16 16:09:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:40,281 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4574 transitions. [2022-11-16 16:09:40,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4574 transitions. [2022-11-16 16:09:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 16:09:40,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:40,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:40,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:40,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:40,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1286383163, now seen corresponding path program 1 times [2022-11-16 16:09:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:40,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133191210] [2022-11-16 16:09:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:40,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:40,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:40,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 16:09:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:40,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:40,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:09:40,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:40,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:40,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133191210] [2022-11-16 16:09:40,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133191210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:40,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:40,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566143238] [2022-11-16 16:09:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:40,906 INFO L87 Difference]: Start difference. First operand 2697 states and 4574 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:41,466 INFO L93 Difference]: Finished difference Result 6483 states and 11084 transitions. [2022-11-16 16:09:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-16 16:09:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:41,488 INFO L225 Difference]: With dead ends: 6483 [2022-11-16 16:09:41,488 INFO L226 Difference]: Without dead ends: 4017 [2022-11-16 16:09:41,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:41,497 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 130 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1334 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 [2022-11-16 16:09:41,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1334 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2022-11-16 16:09:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 4001. [2022-11-16 16:09:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3213 states have (on average 1.6411453470277) internal successors, (5273), 3226 states have internal predecessors, (5273), 722 states have call successors, (722), 57 states have call predecessors, (722), 65 states have return successors, (861), 721 states have call predecessors, (861), 720 states have call successors, (861) [2022-11-16 16:09:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6856 transitions. [2022-11-16 16:09:42,087 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6856 transitions. Word has length 138 [2022-11-16 16:09:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:42,087 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 6856 transitions. [2022-11-16 16:09:42,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6856 transitions. [2022-11-16 16:09:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-16 16:09:42,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:42,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:42,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:42,325 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 579813143, now seen corresponding path program 1 times [2022-11-16 16:09:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533701747] [2022-11-16 16:09:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:42,328 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:42,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 16:09:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:42,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 16:09:42,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:42,684 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533701747] [2022-11-16 16:09:42,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533701747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:42,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:42,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62419805] [2022-11-16 16:09:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:42,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:42,687 INFO L87 Difference]: Start difference. First operand 4001 states and 6856 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:43,537 INFO L93 Difference]: Finished difference Result 9543 states and 16504 transitions. [2022-11-16 16:09:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:43,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2022-11-16 16:09:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:43,572 INFO L225 Difference]: With dead ends: 9543 [2022-11-16 16:09:43,572 INFO L226 Difference]: Without dead ends: 6023 [2022-11-16 16:09:43,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:43,585 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 128 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1328 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 [2022-11-16 16:09:43,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1328 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2022-11-16 16:09:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6007. [2022-11-16 16:09:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6007 states, 4895 states have (on average 1.6500510725229827) internal successors, (8077), 4908 states have internal predecessors, (8077), 1046 states have call successors, (1046), 57 states have call predecessors, (1046), 65 states have return successors, (1269), 1045 states have call predecessors, (1269), 1044 states have call successors, (1269) [2022-11-16 16:09:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 10392 transitions. [2022-11-16 16:09:44,751 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 10392 transitions. Word has length 158 [2022-11-16 16:09:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:44,751 INFO L495 AbstractCegarLoop]: Abstraction has 6007 states and 10392 transitions. [2022-11-16 16:09:44,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 10392 transitions. [2022-11-16 16:09:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 16:09:44,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:44,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:44,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:45,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 582612453, now seen corresponding path program 1 times [2022-11-16 16:09:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:45,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893712902] [2022-11-16 16:09:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:45,007 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:45,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 16:09:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:45,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 16:09:45,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:45,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:45,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893712902] [2022-11-16 16:09:45,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893712902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:45,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:45,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374953665] [2022-11-16 16:09:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:45,348 INFO L87 Difference]: Start difference. First operand 6007 states and 10392 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:46,397 INFO L93 Difference]: Finished difference Result 14391 states and 25108 transitions. [2022-11-16 16:09:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2022-11-16 16:09:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:46,449 INFO L225 Difference]: With dead ends: 14391 [2022-11-16 16:09:46,449 INFO L226 Difference]: Without dead ends: 9273 [2022-11-16 16:09:46,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:46,467 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 126 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1328 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 [2022-11-16 16:09:46,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1328 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2022-11-16 16:09:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 9257. [2022-11-16 16:09:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9257 states, 7655 states have (on average 1.6563030698889614) internal successors, (12679), 7668 states have internal predecessors, (12679), 1536 states have call successors, (1536), 57 states have call predecessors, (1536), 65 states have return successors, (1899), 1535 states have call predecessors, (1899), 1534 states have call successors, (1899) [2022-11-16 16:09:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9257 states to 9257 states and 16114 transitions. [2022-11-16 16:09:48,096 INFO L78 Accepts]: Start accepts. Automaton has 9257 states and 16114 transitions. Word has length 159 [2022-11-16 16:09:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:48,096 INFO L495 AbstractCegarLoop]: Abstraction has 9257 states and 16114 transitions. [2022-11-16 16:09:48,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 16:09:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9257 states and 16114 transitions. [2022-11-16 16:09:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 16:09:48,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:48,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:48,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:48,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:48,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:48,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1075658800, now seen corresponding path program 1 times [2022-11-16 16:09:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:48,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829798599] [2022-11-16 16:09:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:48,366 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 16:09:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:48,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:48,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:09:48,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:48,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829798599] [2022-11-16 16:09:48,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829798599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:48,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:48,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:48,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672455178] [2022-11-16 16:09:48,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:48,739 INFO L87 Difference]: Start difference. First operand 9257 states and 16114 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:50,083 INFO L93 Difference]: Finished difference Result 22483 states and 39472 transitions. [2022-11-16 16:09:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-16 16:09:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:50,149 INFO L225 Difference]: With dead ends: 22483 [2022-11-16 16:09:50,150 INFO L226 Difference]: Without dead ends: 14739 [2022-11-16 16:09:50,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:50,177 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 124 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1332 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 [2022-11-16 16:09:50,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1332 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:50,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14739 states. [2022-11-16 16:09:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14739 to 14723. [2022-11-16 16:09:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14723 states, 12135 states have (on average 1.6554594149155335) internal successors, (20089), 12148 states have internal predecessors, (20089), 2522 states have call successors, (2522), 57 states have call predecessors, (2522), 65 states have return successors, (3129), 2521 states have call predecessors, (3129), 2520 states have call successors, (3129) [2022-11-16 16:09:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14723 states to 14723 states and 25740 transitions. [2022-11-16 16:09:52,297 INFO L78 Accepts]: Start accepts. Automaton has 14723 states and 25740 transitions. Word has length 141 [2022-11-16 16:09:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:52,298 INFO L495 AbstractCegarLoop]: Abstraction has 14723 states and 25740 transitions. [2022-11-16 16:09:52,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 14723 states and 25740 transitions. [2022-11-16 16:09:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-16 16:09:52,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:52,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:52,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:52,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:52,573 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1460781206, now seen corresponding path program 1 times [2022-11-16 16:09:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920735751] [2022-11-16 16:09:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:52,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:52,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:52,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 16:09:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:52,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:52,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:09:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:09:52,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:09:52,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:09:52,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920735751] [2022-11-16 16:09:52,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920735751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:09:52,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:09:52,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:09:52,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329457784] [2022-11-16 16:09:52,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:09:52,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:09:52,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:09:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:09:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:52,991 INFO L87 Difference]: Start difference. First operand 14723 states and 25740 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:09:56,044 INFO L93 Difference]: Finished difference Result 37153 states and 65274 transitions. [2022-11-16 16:09:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:09:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-11-16 16:09:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:09:56,149 INFO L225 Difference]: With dead ends: 37153 [2022-11-16 16:09:56,149 INFO L226 Difference]: Without dead ends: 24697 [2022-11-16 16:09:56,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:09:56,183 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 122 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1342 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 [2022-11-16 16:09:56,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1342 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:09:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24697 states. [2022-11-16 16:09:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24697 to 24681. [2022-11-16 16:09:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24681 states, 20449 states have (on average 1.656266810112964) internal successors, (33869), 20462 states have internal predecessors, (33869), 4166 states have call successors, (4166), 57 states have call predecessors, (4166), 65 states have return successors, (5073), 4165 states have call predecessors, (5073), 4164 states have call successors, (5073) [2022-11-16 16:09:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24681 states to 24681 states and 43108 transitions. [2022-11-16 16:09:59,309 INFO L78 Accepts]: Start accepts. Automaton has 24681 states and 43108 transitions. Word has length 142 [2022-11-16 16:09:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:09:59,309 INFO L495 AbstractCegarLoop]: Abstraction has 24681 states and 43108 transitions. [2022-11-16 16:09:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:09:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24681 states and 43108 transitions. [2022-11-16 16:09:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-16 16:09:59,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:09:59,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:09:59,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 16:09:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:59,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:09:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:09:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2013886786, now seen corresponding path program 1 times [2022-11-16 16:09:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:09:59,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091016923] [2022-11-16 16:09:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:09:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:09:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:09:59,612 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:09:59,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64532aa0-300c-47ca-b396-a3a4a046a1aa/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 16:09:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:09:59,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:09:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:10:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 16:10:00,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:10:00,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:10:00,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091016923] [2022-11-16 16:10:00,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091016923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:00,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:10:00,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:10:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256493146] [2022-11-16 16:10:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:10:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:10:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:10:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:10:00,009 INFO L87 Difference]: Start difference. First operand 24681 states and 43108 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 16:10:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:04,914 INFO L93 Difference]: Finished difference Result 59069 states and 103204 transitions. [2022-11-16 16:10:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:10:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-11-16 16:10:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:05,070 INFO L225 Difference]: With dead ends: 59069 [2022-11-16 16:10:05,070 INFO L226 Difference]: Without dead ends: 38603 [2022-11-16 16:10:05,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:10:05,118 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 120 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1312 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 [2022-11-16 16:10:05,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1312 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:10:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38603 states.