./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product16.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_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/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_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/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_c4cd214d-d928-4021-80f7-7260b7c6390e/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 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 --- 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 15:52:38,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:52:38,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:52:38,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:52:38,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:52:38,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:52:38,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:52:38,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:52:38,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:52:38,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:52:38,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:52:38,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:52:38,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:52:38,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:52:38,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:52:38,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:52:38,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:52:38,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:52:38,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:52:38,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:52:38,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:52:38,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:52:38,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:52:38,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:52:38,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:52:38,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:52:38,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:52:38,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:52:38,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:52:38,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:52:38,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:52:38,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:52:38,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:52:38,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:52:38,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:52:38,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:52:38,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:52:38,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:52:38,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:52:38,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:52:38,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:52:38,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 15:52:38,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:52:38,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:52:38,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:52:38,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:52:38,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:52:38,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:52:38,263 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:52:38,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:52:38,263 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:52:38,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:52:38,265 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:52:38,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:52:38,266 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:52:38,267 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:52:38,267 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:52:38,268 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:52:38,268 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:52:38,268 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:52:38,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:52:38,270 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:52:38,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:52:38,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:52:38,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:52:38,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:52:38,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:52:38,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:52:38,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:52:38,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:52:38,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:52:38,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:52:38,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:52:38,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:52:38,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:38,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:52:38,274 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:52:38,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:52:38,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:52:38,276 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:52:38,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:52:38,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:52:38,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:52:38,277 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_c4cd214d-d928-4021-80f7-7260b7c6390e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 [2022-11-16 15:52:38,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:52:38,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:52:38,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:52:38,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:52:38,655 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:52:38,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-16 15:52:38,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/data/cb64a606a/d51a409efde34983b470b2cb901337ae/FLAG213d08f01 [2022-11-16 15:52:39,364 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:52:39,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-16 15:52:39,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/data/cb64a606a/d51a409efde34983b470b2cb901337ae/FLAG213d08f01 [2022-11-16 15:52:39,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/data/cb64a606a/d51a409efde34983b470b2cb901337ae [2022-11-16 15:52:39,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:52:39,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:52:39,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:39,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:52:39,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:52:39,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:39" (1/1) ... [2022-11-16 15:52:39,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32288192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:39, skipping insertion in model container [2022-11-16 15:52:39,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:39" (1/1) ... [2022-11-16 15:52:39,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:52:39,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:52:40,193 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_c4cd214d-d928-4021-80f7-7260b7c6390e/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-16 15:52:40,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:52:40,429 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_c4cd214d-d928-4021-80f7-7260b7c6390e/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-16 15:52:40,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,502 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:52:40,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40 WrapperNode [2022-11-16 15:52:40,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:40,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:52:40,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:52:40,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,610 INFO L138 Inliner]: procedures = 126, calls = 203, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 969 [2022-11-16 15:52:40,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:52:40,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:52:40,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:52:40,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:52:40,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:52:40,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:40,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:52:40,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:52:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 15:52:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 15:52:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 15:52:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 15:52:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 15:52:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 15:52:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 15:52:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 15:52:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 15:52:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 15:52:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 15:52:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 15:52:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 15:52:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 15:52:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 15:52:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 15:52:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 15:52:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 15:52:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 15:52:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:52:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 15:52:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 15:52:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 15:52:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 15:52:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 15:52:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 15:52:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 15:52:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 15:52:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 15:52:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 15:52:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 15:52:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 15:52:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 15:52:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 15:52:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 15:52:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 15:52:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:52:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 15:52:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 15:52:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:52:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:52:41,098 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:52:41,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:52:42,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:52:42,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:52:42,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:52:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:42 BoogieIcfgContainer [2022-11-16 15:52:42,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:52:42,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:52:42,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:52:42,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:52:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:52:39" (1/3) ... [2022-11-16 15:52:42,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80a55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:42, skipping insertion in model container [2022-11-16 15:52:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (2/3) ... [2022-11-16 15:52:42,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80a55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:42, skipping insertion in model container [2022-11-16 15:52:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:42" (3/3) ... [2022-11-16 15:52:42,659 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2022-11-16 15:52:42,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:52:42,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:52:42,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:52:42,764 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;@c1b41b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:52:42,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:52:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-16 15:52:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 15:52:42,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:42,787 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:42,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1201488115, now seen corresponding path program 1 times [2022-11-16 15:52:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:42,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369634208] [2022-11-16 15:52:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:42,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:43,291 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 15:52:43,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:43,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369634208] [2022-11-16 15:52:43,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369634208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:43,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:43,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:52:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190702200] [2022-11-16 15:52:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 15:52:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 15:52:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 15:52:43,344 INFO L87 Difference]: Start difference. First operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:43,508 INFO L93 Difference]: Finished difference Result 251 states and 338 transitions. [2022-11-16 15:52:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 15:52:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 72 [2022-11-16 15:52:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:43,530 INFO L225 Difference]: With dead ends: 251 [2022-11-16 15:52:43,530 INFO L226 Difference]: Without dead ends: 164 [2022-11-16 15:52:43,535 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 15:52:43,542 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:43,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:52:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-16 15:52:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-16 15:52:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.3125) internal successors, (126), 99 states have internal predecessors, (126), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-16 15:52:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 223 transitions. [2022-11-16 15:52:43,611 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 223 transitions. Word has length 72 [2022-11-16 15:52:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:43,613 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 223 transitions. [2022-11-16 15:52:43,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 223 transitions. [2022-11-16 15:52:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 15:52:43,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:43,618 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:52:43,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -711036879, now seen corresponding path program 1 times [2022-11-16 15:52:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945406757] [2022-11-16 15:52:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:43,822 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 15:52:43,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:43,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945406757] [2022-11-16 15:52:43,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945406757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:43,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:43,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:52:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705502692] [2022-11-16 15:52:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:43,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:52:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:52:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:52:43,833 INFO L87 Difference]: Start difference. First operand 164 states and 223 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:43,975 INFO L93 Difference]: Finished difference Result 247 states and 326 transitions. [2022-11-16 15:52:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:52:43,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 73 [2022-11-16 15:52:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:43,979 INFO L225 Difference]: With dead ends: 247 [2022-11-16 15:52:43,979 INFO L226 Difference]: Without dead ends: 166 [2022-11-16 15:52:43,980 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 15:52:43,982 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:43,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:52:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-16 15:52:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-16 15:52:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-16 15:52:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-11-16 15:52:44,001 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 73 [2022-11-16 15:52:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:44,001 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-11-16 15:52:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-11-16 15:52:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 15:52:44,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:44,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:44,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:52:44,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash -944095922, now seen corresponding path program 1 times [2022-11-16 15:52:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595813847] [2022-11-16 15:52:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:44,128 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 15:52:44,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:44,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595813847] [2022-11-16 15:52:44,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595813847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:44,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:44,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:52:44,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588396745] [2022-11-16 15:52:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:52:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:52:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:52:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:52:44,132 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:44,295 INFO L93 Difference]: Finished difference Result 362 states and 509 transitions. [2022-11-16 15:52:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:52:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2022-11-16 15:52:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:44,304 INFO L225 Difference]: With dead ends: 362 [2022-11-16 15:52:44,306 INFO L226 Difference]: Without dead ends: 214 [2022-11-16 15:52:44,309 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 15:52:44,315 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 57 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:44,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 393 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:52:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-16 15:52:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2022-11-16 15:52:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 133 states have internal predecessors, (181), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-16 15:52:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 300 transitions. [2022-11-16 15:52:44,357 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 300 transitions. Word has length 78 [2022-11-16 15:52:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:44,359 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 300 transitions. [2022-11-16 15:52:44,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 15:52:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 300 transitions. [2022-11-16 15:52:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 15:52:44,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:44,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:44,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:52:44,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash -840321852, now seen corresponding path program 1 times [2022-11-16 15:52:44,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:44,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837858425] [2022-11-16 15:52:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:44,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:44,606 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 15:52:44,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:52:44,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837858425] [2022-11-16 15:52:44,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837858425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:52:44,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104548567] [2022-11-16 15:52:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:52:44,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:44,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:52:44,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:52:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:44,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 15:52:44,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:45,090 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 15:52:45,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:45,199 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 15:52:45,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104548567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1157430801] [2022-11-16 15:52:45,230 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-16 15:52:45,231 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:52:45,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:52:45,243 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:52:45,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:53:15,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 15:53:15,486 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 15:53:15,796 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-11-16 15:53:17,811 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-16 15:53:17,857 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2022-11-16 15:53:35,172 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 455 for LOIs [2022-11-16 15:53:35,740 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-16 15:53:37,559 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-16 15:53:37,620 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:11,450 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:54:17,605 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:54:31,431 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:54:42,699 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 581 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:54:53,959 WARN L233 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:07,553 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 476 DAG size of output: 267 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:36,923 WARN L233 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 455 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:55:49,541 WARN L233 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 474 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:56:12,692 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 573 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:56:19,647 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 574 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:56:27,507 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 582 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:56:29,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1157430801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:56:29,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:56:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-16 15:56:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284220857] [2022-11-16 15:56:29,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:56:29,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 15:56:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:56:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 15:56:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 15:56:29,867 INFO L87 Difference]: Start difference. First operand 209 states and 300 transitions. Second operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 15:57:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:12,579 INFO L93 Difference]: Finished difference Result 543 states and 828 transitions. [2022-11-16 15:57:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 15:57:12,580 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 79 [2022-11-16 15:57:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:12,583 INFO L225 Difference]: With dead ends: 543 [2022-11-16 15:57:12,583 INFO L226 Difference]: Without dead ends: 352 [2022-11-16 15:57:12,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 191.3s TimeCoverageRelationStatistics Valid=188, Invalid=3234, Unknown=0, NotChecked=0, Total=3422 [2022-11-16 15:57:12,585 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 5540 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 4954 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:12,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 4954 Invalid, 5560 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [20 Valid, 5540 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-11-16 15:57:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-16 15:57:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 301. [2022-11-16 15:57:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 204 states have (on average 1.4362745098039216) internal successors, (293), 208 states have internal predecessors, (293), 72 states have call successors, (72), 25 states have call predecessors, (72), 24 states have return successors, (72), 69 states have call predecessors, (72), 71 states have call successors, (72) [2022-11-16 15:57:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 437 transitions. [2022-11-16 15:57:12,787 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 437 transitions. Word has length 79 [2022-11-16 15:57:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:12,787 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 437 transitions. [2022-11-16 15:57:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 15:57:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 437 transitions. [2022-11-16 15:57:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 15:57:12,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:12,790 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:12,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 15:57:12,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:57:12,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:12,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash 83716972, now seen corresponding path program 1 times [2022-11-16 15:57:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:12,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748651718] [2022-11-16 15:57:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:12,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 15:57:13,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748651718] [2022-11-16 15:57:13,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748651718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:57:13,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:57:13,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:57:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357776707] [2022-11-16 15:57:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:57:13,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:57:13,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:57:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:57:13,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:57:13,112 INFO L87 Difference]: Start difference. First operand 301 states and 437 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 15:57:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:57:13,437 INFO L93 Difference]: Finished difference Result 716 states and 1080 transitions. [2022-11-16 15:57:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:57:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 84 [2022-11-16 15:57:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:57:13,441 INFO L225 Difference]: With dead ends: 716 [2022-11-16 15:57:13,442 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 15:57:13,442 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 15:57:13,443 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 55 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:57:13,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 411 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:57:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 15:57:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 434. [2022-11-16 15:57:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 312 states have (on average 1.5064102564102564) internal successors, (470), 316 states have internal predecessors, (470), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (97), 94 states have call predecessors, (97), 96 states have call successors, (97) [2022-11-16 15:57:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 664 transitions. [2022-11-16 15:57:13,630 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 664 transitions. Word has length 84 [2022-11-16 15:57:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:57:13,630 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 664 transitions. [2022-11-16 15:57:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 15:57:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 664 transitions. [2022-11-16 15:57:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 15:57:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:57:13,633 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:57:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:57:13,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:57:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:57:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 716444735, now seen corresponding path program 1 times [2022-11-16 15:57:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:57:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617526696] [2022-11-16 15:57:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:57:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 15:57:13,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:57:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617526696] [2022-11-16 15:57:13,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617526696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:57:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654759832] [2022-11-16 15:57:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:57:13,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:57:13,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:57:13,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:57:13,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:57:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:57:14,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 15:57:14,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:57:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 15:57:14,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:57:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 15:57:14,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654759832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:57:14,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1820612183] [2022-11-16 15:57:14,192 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-16 15:57:14,193 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:57:14,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:57:14,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:57:14,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:58:08,172 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 15:58:08,459 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 15:58:08,739 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:58:45,059 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:58:51,193 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 490 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:04,825 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:21,247 WARN L233 SmtUtils]: Spent 16.09s on a formula simplification. DAG size of input: 583 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:29,288 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 568 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:36,118 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 566 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:43,696 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 570 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 15:59:53,818 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 570 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:00,862 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 574 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:08,264 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:19,322 WARN L233 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 584 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:19,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1820612183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:00:19,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:00:19,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-16 16:00:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041224423] [2022-11-16 16:00:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:00:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 16:00:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:00:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 16:00:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-16 16:00:19,333 INFO L87 Difference]: Start difference. First operand 434 states and 664 transitions. Second operand has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 16:00:32,347 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 495 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:38,669 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 515 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:44,447 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:50,068 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 472 DAG size of output: 366 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:00:55,804 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 465 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:02,302 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 443 DAG size of output: 419 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:08,059 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 481 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:16,723 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 514 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:24,581 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 557 DAG size of output: 375 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:01:31,643 INFO L93 Difference]: Finished difference Result 824 states and 1291 transitions. [2022-11-16 16:01:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 16:01:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 85 [2022-11-16 16:01:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:01:31,647 INFO L225 Difference]: With dead ends: 824 [2022-11-16 16:01:31,647 INFO L226 Difference]: Without dead ends: 543 [2022-11-16 16:01:31,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 192.2s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 16:01:31,655 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 249 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:01:31,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 3017 Invalid, 2207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-16 16:01:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-16 16:01:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 466. [2022-11-16 16:01:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 346 states have internal predecessors, (511), 100 states have call successors, (100), 26 states have call predecessors, (100), 25 states have return successors, (100), 95 states have call predecessors, (100), 99 states have call successors, (100) [2022-11-16 16:01:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 711 transitions. [2022-11-16 16:01:31,962 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 711 transitions. Word has length 85 [2022-11-16 16:01:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:01:31,963 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 711 transitions. [2022-11-16 16:01:31,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 16:01:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 711 transitions. [2022-11-16 16:01:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 16:01:31,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:01:31,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:01:31,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 16:01:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:01:32,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:01:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:01:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1208627416, now seen corresponding path program 1 times [2022-11-16 16:01:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:01:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885489458] [2022-11-16 16:01:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:01:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:01:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:01:32,401 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 16:01:32,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:01:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885489458] [2022-11-16 16:01:32,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885489458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:01:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763627903] [2022-11-16 16:01:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:01:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:01:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:01:32,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:01:32,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:01:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:01:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:01:32,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:01:32,784 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 16:01:32,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:01:32,883 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 16:01:32,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763627903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:01:32,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538498027] [2022-11-16 16:01:32,887 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-16 16:01:32,888 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:01:32,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:01:32,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:01:32,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:03:29,275 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-16 16:03:29,563 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-11-16 16:03:29,866 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 438 for LOIs [2022-11-16 16:03:30,174 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 282 for LOIs [2022-11-16 16:03:30,301 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-16 16:03:30,593 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:03:48,370 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:06,827 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:26,325 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:35,981 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 583 DAG size of output: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:43,394 WARN L233 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 585 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:05,539 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 545 DAG size of output: 404 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:21,423 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 526 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:21,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [538498027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:05:21,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:05:21,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-16 16:05:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884740417] [2022-11-16 16:05:21,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:05:21,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 16:05:21,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:05:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 16:05:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 16:05:21,431 INFO L87 Difference]: Start difference. First operand 466 states and 711 transitions. Second operand has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-16 16:05:28,608 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:34,235 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:39,960 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 492 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:45,738 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:05:53,934 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 498 DAG size of output: 350 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:06:11,318 INFO L93 Difference]: Finished difference Result 860 states and 1344 transitions. [2022-11-16 16:06:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 16:06:11,318 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 88 [2022-11-16 16:06:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:06:11,322 INFO L225 Difference]: With dead ends: 860 [2022-11-16 16:06:11,322 INFO L226 Difference]: Without dead ends: 579 [2022-11-16 16:06:11,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 145.7s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 16:06:11,325 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 209 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 3171 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:06:11,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 3202 Invalid, 3191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3171 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-11-16 16:06:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-16 16:06:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 506. [2022-11-16 16:06:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 372 states have (on average 1.4946236559139785) internal successors, (556), 380 states have internal predecessors, (556), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (105), 98 states have call predecessors, (105), 104 states have call successors, (105) [2022-11-16 16:06:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 766 transitions. [2022-11-16 16:06:11,820 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 766 transitions. Word has length 88 [2022-11-16 16:06:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:06:11,820 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 766 transitions. [2022-11-16 16:06:11,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-16 16:06:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 766 transitions. [2022-11-16 16:06:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 16:06:11,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:06:11,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:06:11,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:06:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:12,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:06:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:06:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1693430152, now seen corresponding path program 1 times [2022-11-16 16:06:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:06:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644083031] [2022-11-16 16:06:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:06:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:12,168 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 16:06:12,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:06:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644083031] [2022-11-16 16:06:12,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644083031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:06:12,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374995240] [2022-11-16 16:06:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:06:12,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:06:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:06:12,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:06:12,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4cd214d-d928-4021-80f7-7260b7c6390e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:06:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:06:12,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:06:12,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:06:12,511 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 16:06:12,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:06:12,580 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 16:06:12,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374995240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:06:12,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305959400] [2022-11-16 16:06:12,584 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-16 16:06:12,584 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:06:12,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:06:12,585 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:06:12,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs