./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW --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 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed --- 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-4e7fbc6 [2022-11-23 15:50:18,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:50:18,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:50:18,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:50:18,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:50:18,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:50:18,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:50:18,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:50:18,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:50:18,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:50:18,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:50:18,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:50:18,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:50:18,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:50:18,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:50:18,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:50:18,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:50:18,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:50:18,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:50:18,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:50:18,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:50:18,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:50:18,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:50:18,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:50:18,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:50:18,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:50:18,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:50:18,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:50:18,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:50:18,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:50:18,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:50:18,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:50:18,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:50:18,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:50:18,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:50:18,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:50:18,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:50:18,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:50:18,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:50:18,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:50:18,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:50:18,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:50:18,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:50:18,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:50:18,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:50:18,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:50:18,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:50:18,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:50:18,307 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:50:18,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:50:18,308 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:50:18,308 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:50:18,309 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:50:18,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:50:18,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:50:18,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:50:18,310 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:50:18,311 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:50:18,311 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:50:18,311 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:50:18,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:50:18,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:50:18,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:50:18,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:50:18,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:50:18,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:50:18,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:50:18,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:50:18,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:50:18,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:50:18,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:50:18,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:50:18,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:50:18,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:50:18,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:50:18,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:50:18,318 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:50:18,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:50:18,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:50:18,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:50:18,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:50:18,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:50:18,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:50:18,320 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_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed [2022-11-23 15:50:18,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:50:18,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:50:18,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:50:18,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:50:18,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:50:18,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-23 15:50:21,960 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:50:22,409 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:50:22,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-23 15:50:22,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/data/0c41703ab/d646a88f7f344b328de165795c2a7d90/FLAG407338c3c [2022-11-23 15:50:22,460 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/data/0c41703ab/d646a88f7f344b328de165795c2a7d90 [2022-11-23 15:50:22,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:50:22,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:50:22,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:50:22,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:50:22,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:50:22,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:22" (1/1) ... [2022-11-23 15:50:22,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2812aec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:22, skipping insertion in model container [2022-11-23 15:50:22,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:22" (1/1) ... [2022-11-23 15:50:22,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:50:22,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:50:23,408 WARN L237 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_f1f74465-0825-4b33-a030-7c03839871d1/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-23 15:50:23,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:23,427 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:50:23,526 WARN L237 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_f1f74465-0825-4b33-a030-7c03839871d1/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-23 15:50:23,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:23,559 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:50:23,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23 WrapperNode [2022-11-23 15:50:23,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:50:23,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:23,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:50:23,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:50:23,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,715 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2022-11-23 15:50:23,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:23,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:50:23,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:50:23,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:50:23,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:50:23,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:50:23,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:50:23,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:50:23,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (1/1) ... [2022-11-23 15:50:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:50:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:23,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:50:23,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 15:50:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 15:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:50:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:50:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:50:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:50:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:50:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:50:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:50:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:50:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:50:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:50:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:50:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:50:23,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 15:50:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 15:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:50:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:50:23,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:50:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:50:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:50:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:50:23,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:50:23,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:50:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:50:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:50:24,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:50:24,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:50:25,079 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:50:25,640 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:50:25,641 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:50:25,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:25 BoogieIcfgContainer [2022-11-23 15:50:25,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:50:25,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:50:25,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:50:25,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:50:25,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:50:22" (1/3) ... [2022-11-23 15:50:25,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c74e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:25, skipping insertion in model container [2022-11-23 15:50:25,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:23" (2/3) ... [2022-11-23 15:50:25,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c74e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:25, skipping insertion in model container [2022-11-23 15:50:25,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:25" (3/3) ... [2022-11-23 15:50:25,658 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product28.cil.c [2022-11-23 15:50:25,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:50:25,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:50:25,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:50:25,765 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;@764afbd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:50:25,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:50:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-23 15:50:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 15:50:25,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:25,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:25,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash -237789091, now seen corresponding path program 1 times [2022-11-23 15:50:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:25,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433670566] [2022-11-23 15:50:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:26,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:26,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433670566] [2022-11-23 15:50:26,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433670566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:26,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:26,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:50:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527719996] [2022-11-23 15:50:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:50:26,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:26,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:50:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:50:26,289 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:26,421 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-11-23 15:50:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:50:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-23 15:50:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:26,437 INFO L225 Difference]: With dead ends: 277 [2022-11-23 15:50:26,438 INFO L226 Difference]: Without dead ends: 177 [2022-11-23 15:50:26,443 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 [2022-11-23 15:50:26,447 INFO L413 NwaCegarLoop]: 208 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, 208 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 [2022-11-23 15:50:26,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:50:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-23 15:50:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-23 15:50:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:50:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-11-23 15:50:26,554 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-11-23 15:50:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:26,557 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-11-23 15:50:26,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-11-23 15:50:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 15:50:26,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:26,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:50:26,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2041869761, now seen corresponding path program 1 times [2022-11-23 15:50:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644494028] [2022-11-23 15:50:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:26,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644494028] [2022-11-23 15:50:26,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644494028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:26,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:26,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667857256] [2022-11-23 15:50:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:26,931 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:27,059 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-11-23 15:50:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-23 15:50:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:27,062 INFO L225 Difference]: With dead ends: 273 [2022-11-23 15:50:27,063 INFO L226 Difference]: Without dead ends: 179 [2022-11-23 15:50:27,064 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 [2022-11-23 15:50:27,066 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 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 [2022-11-23 15:50:27,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:50:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-23 15:50:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-23 15:50:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:50:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-23 15:50:27,093 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-11-23 15:50:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:27,094 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-23 15:50:27,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-23 15:50:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:50:27,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:27,098 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] [2022-11-23 15:50:27,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:50:27,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:27,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1503020543, now seen corresponding path program 1 times [2022-11-23 15:50:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:27,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767666656] [2022-11-23 15:50:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:27,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:27,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:27,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767666656] [2022-11-23 15:50:27,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767666656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:27,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:27,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705880265] [2022-11-23 15:50:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:27,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:27,266 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:27,466 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-11-23 15:50:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:27,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-23 15:50:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:27,474 INFO L225 Difference]: With dead ends: 388 [2022-11-23 15:50:27,476 INFO L226 Difference]: Without dead ends: 227 [2022-11-23 15:50:27,478 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 [2022-11-23 15:50:27,483 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 420 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 [2022-11-23 15:50:27,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 420 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:50:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-23 15:50:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-11-23 15:50:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:50:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-11-23 15:50:27,526 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-11-23 15:50:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:27,528 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-11-23 15:50:27,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:50:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-11-23 15:50:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 15:50:27,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:27,541 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] [2022-11-23 15:50:27,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:50:27,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:27,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:27,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1949167652, now seen corresponding path program 1 times [2022-11-23 15:50:27,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:27,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987756693] [2022-11-23 15:50:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:27,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:27,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987756693] [2022-11-23 15:50:27,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987756693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:50:27,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60868837] [2022-11-23 15:50:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:27,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:50:27,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:27,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:50:27,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:50:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:28,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:50:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:50:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:28,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:50:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:50:28,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60868837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:50:28,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725193445] [2022-11-23 15:50:28,432 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-23 15:50:28,433 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:50:28,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:50:28,454 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:50:28,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:51:01,058 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:51:01,430 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 15:51:01,911 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:51:17,464 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:24,392 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:32,096 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:39,323 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:46,830 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:02,950 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:09,770 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 518 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:31,006 WARN L233 SmtUtils]: Spent 20.86s on a formula simplification. DAG size of input: 589 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:40,543 WARN L233 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 574 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:52:51,005 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 576 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:53:00,622 WARN L233 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 576 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:53:10,307 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 574 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:53:11,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [725193445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:11,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:53:11,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-11-23 15:53:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995917723] [2022-11-23 15:53:11,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 15:53:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:11,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 15:53:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:53:11,746 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 15:53:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:20,553 INFO L93 Difference]: Finished difference Result 523 states and 785 transitions. [2022-11-23 15:53:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 15:53:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2022-11-23 15:53:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:20,557 INFO L225 Difference]: With dead ends: 523 [2022-11-23 15:53:20,557 INFO L226 Difference]: Without dead ends: 319 [2022-11-23 15:53:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 129.8s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:53:20,560 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 145 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 3069 Invalid, 1804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-23 15:53:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-23 15:53:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 245. [2022-11-23 15:53:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:53:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2022-11-23 15:53:20,686 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2022-11-23 15:53:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:20,687 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2022-11-23 15:53:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 15:53:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2022-11-23 15:53:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:53:20,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:20,689 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 15:53:20,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:53:20,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:20,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1203771102, now seen corresponding path program 1 times [2022-11-23 15:53:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847861631] [2022-11-23 15:53:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:53:21,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847861631] [2022-11-23 15:53:21,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847861631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:21,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:21,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:53:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548784018] [2022-11-23 15:53:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:21,077 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:53:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:21,416 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2022-11-23 15:53:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:21,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-23 15:53:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:21,422 INFO L225 Difference]: With dead ends: 583 [2022-11-23 15:53:21,422 INFO L226 Difference]: Without dead ends: 362 [2022-11-23 15:53:21,424 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 [2022-11-23 15:53:21,424 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 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 [2022-11-23 15:53:21,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:53:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-23 15:53:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-11-23 15:53:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-23 15:53:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-11-23 15:53:21,613 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2022-11-23 15:53:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:21,614 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-11-23 15:53:21,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:53:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-11-23 15:53:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:53:21,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:21,617 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 15:53:21,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:53:21,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1780686664, now seen corresponding path program 1 times [2022-11-23 15:53:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:21,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568013877] [2022-11-23 15:53:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:53:21,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:21,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568013877] [2022-11-23 15:53:21,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568013877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:53:21,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017830086] [2022-11-23 15:53:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:21,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:21,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:21,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:53:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:22,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:53:22,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:53:22,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:53:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:53:22,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017830086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:53:22,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182416440] [2022-11-23 15:53:22,256 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 15:53:22,257 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:53:22,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:53:22,257 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:53:22,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:54:03,421 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:54:03,776 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-23 15:54:04,116 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:54:20,579 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:28,567 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:36,522 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:43,962 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:54:51,569 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:06,808 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:13,251 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 518 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:35,023 WARN L233 SmtUtils]: Spent 21.42s on a formula simplification. DAG size of input: 593 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:42,958 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 574 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:52,921 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 576 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:55:59,924 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 576 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:06,883 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 574 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:16,268 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 574 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:25,776 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 572 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:30,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [182416440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:56:30,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:56:30,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-11-23 15:56:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150626002] [2022-11-23 15:56:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:56:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 15:56:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:56:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 15:56:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:56:30,378 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 15:56:51,705 WARN L233 SmtUtils]: Spent 19.48s on a formula simplification. DAG size of input: 570 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:56:57,191 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 421 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:57:13,258 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 414 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:57:18,964 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 412 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:57:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:57:34,497 INFO L93 Difference]: Finished difference Result 808 states and 1262 transitions. [2022-11-23 15:57:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 15:57:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-23 15:57:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:57:34,502 INFO L225 Difference]: With dead ends: 808 [2022-11-23 15:57:34,502 INFO L226 Difference]: Without dead ends: 514 [2022-11-23 15:57:34,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 198.1s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 15:57:34,505 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 355 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:57:34,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 3410 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-11-23 15:57:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-23 15:57:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 419. [2022-11-23 15:57:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 310 states have internal predecessors, (459), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-23 15:57:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 636 transitions. [2022-11-23 15:57:34,798 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 636 transitions. Word has length 74 [2022-11-23 15:57:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:57:34,799 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 636 transitions. [2022-11-23 15:57:34,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-23 15:57:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 636 transitions. [2022-11-23 15:57:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 15:57:34,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:57:34,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:57:34,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:57:35,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:57:35,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:57:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:57:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302324, now seen corresponding path program 1 times [2022-11-23 15:57:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:57:35,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555890572] [2022-11-23 15:57:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:57:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:57:35,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:57:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555890572] [2022-11-23 15:57:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555890572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:57:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905654218] [2022-11-23 15:57:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:57:35,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:57:35,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:57:35,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:57:35,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f74465-0825-4b33-a030-7c03839871d1/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:57:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:57:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:57:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:57:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:57:35,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:57:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:57:35,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905654218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:57:35,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344878903] [2022-11-23 15:57:35,746 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-23 15:57:35,746 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:57:35,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:57:35,747 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:57:35,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:59:40,271 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:59:40,665 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-23 15:59:40,999 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-23 15:59:41,302 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 236 for LOIs [2022-11-23 15:59:41,987 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-23 15:59:42,060 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 15:59:42,408 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 231 for LOIs [2022-11-23 16:00:01,256 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2022-11-23 16:00:01,288 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 222 for LOIs [2022-11-23 16:00:01,372 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-23 16:00:01,410 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-23 16:00:03,005 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:18,492 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:25,551 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:32,726 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:39,422 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:46,506 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:01,809 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:08,393 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 518 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:14,006 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 539 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:19,787 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 531 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:38,994 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 536 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:45,443 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 529 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:00,118 WARN L233 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 531 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:15,889 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 534 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:24,868 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 424 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:01,819 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 482 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:08,198 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 483 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:15,263 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 524 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:19,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [344878903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:19,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:03:19,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-23 16:03:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750134737] [2022-11-23 16:03:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:19,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-23 16:03:19,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-23 16:03:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 16:03:19,232 INFO L87 Difference]: Start difference. First operand 419 states and 636 transitions. Second operand has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 33 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 16:03:42,570 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 351 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:54,145 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 356 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)