./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a59be100f0df5b45ec217b714193edff4cbaee7a030bd6a056d7c0737b59e84e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:17:41,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:17:41,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:17:41,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:17:41,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:17:41,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:17:41,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:17:41,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:17:41,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:17:41,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:17:41,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:17:41,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:17:41,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:17:41,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:17:41,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:17:41,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:17:41,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:17:41,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:17:41,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:17:41,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:17:41,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:17:41,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:17:41,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:17:41,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:17:41,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:17:41,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:17:41,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:17:41,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:17:41,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:17:41,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:17:41,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:17:41,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:17:41,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:17:41,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:17:41,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:17:41,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:17:41,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:17:41,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:17:41,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:17:41,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:17:41,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:17:41,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:17:41,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:17:41,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:17:41,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:17:41,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:17:41,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:17:41,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:17:41,863 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:17:41,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:17:41,863 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:17:41,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:17:41,865 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:17:41,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:17:41,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:17:41,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:17:41,866 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:17:41,866 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:17:41,866 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:17:41,866 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:17:41,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:17:41,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:17:41,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:17:41,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:17:41,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:17:41,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:17:41,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:17:41,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:17:41,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:17:41,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:17:41,871 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:17:41,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:17:41,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:17:41,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:17:41,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:41,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:17:41,873 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:17:41,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:17:41,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:17:41,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:17:41,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:17:41,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:17:41,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:17:41,874 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_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a59be100f0df5b45ec217b714193edff4cbaee7a030bd6a056d7c0737b59e84e [2022-11-03 02:17:42,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:17:42,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:17:42,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:17:42,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:17:42,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:17:42,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec3_product29.cil.c [2022-11-03 02:17:42,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/data/346fb8e78/43e8a0b45c6a4f2a80bac9755c2308c7/FLAGef22d7b21 [2022-11-03 02:17:42,914 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:17:42,915 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c [2022-11-03 02:17:42,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/data/346fb8e78/43e8a0b45c6a4f2a80bac9755c2308c7/FLAGef22d7b21 [2022-11-03 02:17:43,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/data/346fb8e78/43e8a0b45c6a4f2a80bac9755c2308c7 [2022-11-03 02:17:43,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:17:43,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:17:43,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:43,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:17:43,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:17:43,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:43" (1/1) ... [2022-11-03 02:17:43,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5866ed5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:43, skipping insertion in model container [2022-11-03 02:17:43,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:43" (1/1) ... [2022-11-03 02:17:43,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:17:43,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:17:43,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c[49640,49653] [2022-11-03 02:17:43,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:43,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:17:43,970 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/sv-benchmarks/c/product-lines/email_spec3_product29.cil.c[49640,49653] [2022-11-03 02:17:44,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:44,085 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:17:44,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44 WrapperNode [2022-11-03 02:17:44,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:44,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:44,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:17:44,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:17:44,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,170 INFO L138 Inliner]: procedures = 132, calls = 236, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 955 [2022-11-03 02:17:44,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:44,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:17:44,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:17:44,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:17:44,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:17:44,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:17:44,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:17:44,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:17:44,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (1/1) ... [2022-11-03 02:17:44,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:44,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:17:44,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:17:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:17:44,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:17:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:17:44,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:17:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:17:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:17:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:17:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:17:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:17:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:17:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:17:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:17:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:17:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:17:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:17:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:17:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:17:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:17:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:17:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:17:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:17:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:17:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:17:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:17:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:17:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:17:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:17:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:17:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:17:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:17:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:17:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:17:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:17:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:17:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:17:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:17:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:17:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:17:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 02:17:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 02:17:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:17:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:17:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:17:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:17:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-03 02:17:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-03 02:17:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:17:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:17:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:17:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:17:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:17:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:17:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:17:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:17:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:17:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:17:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:17:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:17:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:17:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:17:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:17:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:17:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:17:44,606 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:17:44,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:17:45,620 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:17:46,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:17:46,271 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:17:46,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:46 BoogieIcfgContainer [2022-11-03 02:17:46,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:17:46,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:17:46,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:17:46,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:17:46,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:17:43" (1/3) ... [2022-11-03 02:17:46,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c997c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:46, skipping insertion in model container [2022-11-03 02:17:46,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:44" (2/3) ... [2022-11-03 02:17:46,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c997c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:46, skipping insertion in model container [2022-11-03 02:17:46,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:46" (3/3) ... [2022-11-03 02:17:46,287 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product29.cil.c [2022-11-03 02:17:46,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:17:46,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:17:46,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:17:46,394 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;@190866e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:17:46,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:17:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 131 states have internal predecessors, (162), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-03 02:17:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:17:46,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:46,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:46,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:46,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -747606182, now seen corresponding path program 1 times [2022-11-03 02:17:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:46,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249428551] [2022-11-03 02:17:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:17:46,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249428551] [2022-11-03 02:17:46,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249428551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:46,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:46,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:17:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010780154] [2022-11-03 02:17:46,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:17:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:17:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:17:46,899 INFO L87 Difference]: Start difference. First operand has 223 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 131 states have internal predecessors, (162), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:17:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:47,123 INFO L93 Difference]: Finished difference Result 353 states and 467 transitions. [2022-11-03 02:17:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:17:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2022-11-03 02:17:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:47,143 INFO L225 Difference]: With dead ends: 353 [2022-11-03 02:17:47,143 INFO L226 Difference]: Without dead ends: 219 [2022-11-03 02:17:47,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:17:47,163 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:47,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-03 02:17:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2022-11-03 02:17:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 122 states have (on average 1.278688524590164) internal successors, (156), 127 states have internal predecessors, (156), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:17:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 289 transitions. [2022-11-03 02:17:47,222 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 289 transitions. Word has length 90 [2022-11-03 02:17:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 289 transitions. [2022-11-03 02:17:47,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:17:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 289 transitions. [2022-11-03 02:17:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:17:47,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:47,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:17:47,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash 745616178, now seen corresponding path program 1 times [2022-11-03 02:17:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:47,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466632089] [2022-11-03 02:17:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:17:47,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:47,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466632089] [2022-11-03 02:17:47,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466632089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:47,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:47,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603182800] [2022-11-03 02:17:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:47,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:47,510 INFO L87 Difference]: Start difference. First operand 219 states and 289 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:17:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:47,692 INFO L93 Difference]: Finished difference Result 348 states and 448 transitions. [2022-11-03 02:17:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 102 [2022-11-03 02:17:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:47,696 INFO L225 Difference]: With dead ends: 348 [2022-11-03 02:17:47,696 INFO L226 Difference]: Without dead ends: 221 [2022-11-03 02:17:47,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:47,698 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:47,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 501 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-03 02:17:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-03 02:17:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 129 states have internal predecessors, (158), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-03 02:17:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 291 transitions. [2022-11-03 02:17:47,719 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 291 transitions. Word has length 102 [2022-11-03 02:17:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:47,720 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 291 transitions. [2022-11-03 02:17:47,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:17:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 291 transitions. [2022-11-03 02:17:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 02:17:47,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:47,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:47,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:17:47,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash 328723871, now seen corresponding path program 1 times [2022-11-03 02:17:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:47,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064554758] [2022-11-03 02:17:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:17:47,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064554758] [2022-11-03 02:17:47,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064554758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:47,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:47,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260961523] [2022-11-03 02:17:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:47,877 INFO L87 Difference]: Start difference. First operand 221 states and 291 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:17:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:47,999 INFO L93 Difference]: Finished difference Result 477 states and 649 transitions. [2022-11-03 02:17:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2022-11-03 02:17:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:48,002 INFO L225 Difference]: With dead ends: 477 [2022-11-03 02:17:48,002 INFO L226 Difference]: Without dead ends: 274 [2022-11-03 02:17:48,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:48,004 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 59 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:48,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 522 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:17:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-03 02:17:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2022-11-03 02:17:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 158 states have (on average 1.3481012658227849) internal successors, (213), 163 states have internal predecessors, (213), 82 states have call successors, (82), 29 states have call predecessors, (82), 28 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-11-03 02:17:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2022-11-03 02:17:48,030 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 107 [2022-11-03 02:17:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:48,030 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2022-11-03 02:17:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:17:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2022-11-03 02:17:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:17:48,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:48,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:17:48,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1956092943, now seen corresponding path program 1 times [2022-11-03 02:17:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:48,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949929603] [2022-11-03 02:17:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:17:48,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949929603] [2022-11-03 02:17:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949929603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:17:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078650915] [2022-11-03 02:17:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:48,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:17:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:48,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:17:48,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:17:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:48,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:17:48,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:17:48,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:17:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:17:48,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078650915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:17:48,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [852001177] [2022-11-03 02:17:48,979 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-11-03 02:17:48,979 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:17:48,985 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:17:48,990 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:17:48,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:18:12,599 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:18:12,893 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-03 02:18:14,749 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-03 02:18:14,819 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:18:15,118 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-11-03 02:18:18,464 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 266 for LOIs [2022-11-03 02:18:43,894 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 244 for LOIs [2022-11-03 02:18:43,936 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 443 for LOIs [2022-11-03 02:18:44,192 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 452 for LOIs [2022-11-03 02:18:44,849 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 247 for LOIs [2022-11-03 02:18:44,887 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 245 for LOIs [2022-11-03 02:18:44,925 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-03 02:18:49,548 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 249 for LOIs [2022-11-03 02:18:49,586 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2022-11-03 02:18:49,628 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:31,596 WARN L234 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 490 DAG size of output: 371 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:05,126 WARN L234 SmtUtils]: Spent 13.79s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:11,804 WARN L234 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 502 DAG size of output: 280 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:11,532 WARN L234 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 452 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:27,807 WARN L234 SmtUtils]: Spent 13.65s on a formula simplification. DAG size of input: 511 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:55,755 WARN L234 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 539 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:38,125 WARN L234 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 621 DAG size of output: 489 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:49,404 WARN L234 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 621 DAG size of output: 489 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:56,516 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3860#(and (= ~queued_client~0 0) (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= ~__ste_client_idCounter2~0 3) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= ~sent_signed~0 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Base~0 0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 ~__ste_email_isSigned0~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~queued_message~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0))' at error location [2022-11-03 02:22:56,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:22:56,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:22:56,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 02:22:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643297607] [2022-11-03 02:22:56,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:22:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:22:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=5453, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:22:56,522 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:22:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:56,874 INFO L93 Difference]: Finished difference Result 671 states and 998 transitions. [2022-11-03 02:22:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:22:56,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 97 [2022-11-03 02:22:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:56,879 INFO L225 Difference]: With dead ends: 671 [2022-11-03 02:22:56,879 INFO L226 Difference]: Without dead ends: 544 [2022-11-03 02:22:56,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 246.8s TimeCoverageRelationStatistics Valid=247, Invalid=5453, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:22:56,883 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 270 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:56,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 971 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:22:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-03 02:22:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 529. [2022-11-03 02:22:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 339 states have (on average 1.471976401179941) internal successors, (499), 344 states have internal predecessors, (499), 161 states have call successors, (161), 29 states have call predecessors, (161), 28 states have return successors, (158), 157 states have call predecessors, (158), 158 states have call successors, (158) [2022-11-03 02:22:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 818 transitions. [2022-11-03 02:22:56,918 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 818 transitions. Word has length 97 [2022-11-03 02:22:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:56,918 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 818 transitions. [2022-11-03 02:22:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:22:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 818 transitions. [2022-11-03 02:22:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:22:56,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:56,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:56,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:57,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:57,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1861710956, now seen corresponding path program 1 times [2022-11-03 02:22:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:57,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082514973] [2022-11-03 02:22:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:22:57,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:57,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082514973] [2022-11-03 02:22:57,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082514973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:57,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:57,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922096347] [2022-11-03 02:22:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:57,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:57,273 INFO L87 Difference]: Start difference. First operand 529 states and 818 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:22:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:57,416 INFO L93 Difference]: Finished difference Result 1288 states and 2034 transitions. [2022-11-03 02:22:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:57,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-11-03 02:22:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:57,422 INFO L225 Difference]: With dead ends: 1288 [2022-11-03 02:22:57,422 INFO L226 Difference]: Without dead ends: 791 [2022-11-03 02:22:57,424 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 [2022-11-03 02:22:57,425 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 57 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:57,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 526 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-11-03 02:22:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 786. [2022-11-03 02:22:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 517 states have (on average 1.493230174081238) internal successors, (772), 522 states have internal predecessors, (772), 240 states have call successors, (240), 29 states have call predecessors, (240), 28 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2022-11-03 02:22:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1249 transitions. [2022-11-03 02:22:57,475 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1249 transitions. Word has length 103 [2022-11-03 02:22:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:57,476 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1249 transitions. [2022-11-03 02:22:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:22:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1249 transitions. [2022-11-03 02:22:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:22:57,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:57,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:57,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:57,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1895996833, now seen corresponding path program 1 times [2022-11-03 02:22:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646439355] [2022-11-03 02:22:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:22:57,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646439355] [2022-11-03 02:22:57,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646439355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:57,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:57,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542077167] [2022-11-03 02:22:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:57,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:57,608 INFO L87 Difference]: Start difference. First operand 786 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:57,780 INFO L93 Difference]: Finished difference Result 1910 states and 3081 transitions. [2022-11-03 02:22:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:57,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 115 [2022-11-03 02:22:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:57,788 INFO L225 Difference]: With dead ends: 1910 [2022-11-03 02:22:57,788 INFO L226 Difference]: Without dead ends: 1186 [2022-11-03 02:22:57,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:57,792 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 55 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:57,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 515 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-03 02:22:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1181. [2022-11-03 02:22:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 793 states have (on average 1.5031525851197982) internal successors, (1192), 798 states have internal predecessors, (1192), 359 states have call successors, (359), 29 states have call predecessors, (359), 28 states have return successors, (356), 355 states have call predecessors, (356), 356 states have call successors, (356) [2022-11-03 02:22:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1907 transitions. [2022-11-03 02:22:57,862 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1907 transitions. Word has length 115 [2022-11-03 02:22:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:57,863 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1907 transitions. [2022-11-03 02:22:57,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1907 transitions. [2022-11-03 02:22:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 02:22:57,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:57,870 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:57,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:22:57,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 487412494, now seen corresponding path program 1 times [2022-11-03 02:22:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022442668] [2022-11-03 02:22:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:22:57,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:57,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022442668] [2022-11-03 02:22:57,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022442668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:57,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638376764] [2022-11-03 02:22:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:57,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:57,968 INFO L87 Difference]: Start difference. First operand 1181 states and 1907 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:22:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:58,169 INFO L93 Difference]: Finished difference Result 2813 states and 4593 transitions. [2022-11-03 02:22:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 105 [2022-11-03 02:22:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:58,180 INFO L225 Difference]: With dead ends: 2813 [2022-11-03 02:22:58,180 INFO L226 Difference]: Without dead ends: 1774 [2022-11-03 02:22:58,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:58,185 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 53 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:58,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 507 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-11-03 02:22:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1769. [2022-11-03 02:22:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1219 states have (on average 1.509433962264151) internal successors, (1840), 1224 states have internal predecessors, (1840), 521 states have call successors, (521), 29 states have call predecessors, (521), 28 states have return successors, (518), 517 states have call predecessors, (518), 518 states have call successors, (518) [2022-11-03 02:22:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2879 transitions. [2022-11-03 02:22:58,290 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2879 transitions. Word has length 105 [2022-11-03 02:22:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:58,291 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2879 transitions. [2022-11-03 02:22:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:22:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2879 transitions. [2022-11-03 02:22:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:22:58,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:58,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:58,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:22:58,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 894670174, now seen corresponding path program 1 times [2022-11-03 02:22:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:58,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494664370] [2022-11-03 02:22:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:22:58,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494664370] [2022-11-03 02:22:58,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494664370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:58,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:58,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:58,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263493570] [2022-11-03 02:22:58,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:58,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:58,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:58,405 INFO L87 Difference]: Start difference. First operand 1769 states and 2879 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:58,633 INFO L93 Difference]: Finished difference Result 4198 states and 6901 transitions. [2022-11-03 02:22:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 117 [2022-11-03 02:22:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:58,649 INFO L225 Difference]: With dead ends: 4198 [2022-11-03 02:22:58,649 INFO L226 Difference]: Without dead ends: 2708 [2022-11-03 02:22:58,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:58,655 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 51 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:58,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 507 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-11-03 02:22:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2703. [2022-11-03 02:22:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1908 states have (on average 1.5125786163522013) internal successors, (2886), 1913 states have internal predecessors, (2886), 766 states have call successors, (766), 29 states have call predecessors, (766), 28 states have return successors, (763), 762 states have call predecessors, (763), 763 states have call successors, (763) [2022-11-03 02:22:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4415 transitions. [2022-11-03 02:22:58,871 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4415 transitions. Word has length 117 [2022-11-03 02:22:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:58,871 INFO L495 AbstractCegarLoop]: Abstraction has 2703 states and 4415 transitions. [2022-11-03 02:22:58,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4415 transitions. [2022-11-03 02:22:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:22:58,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:58,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:58,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:22:58,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1310299163, now seen corresponding path program 1 times [2022-11-03 02:22:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:58,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336409483] [2022-11-03 02:22:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:58,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:22:58,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:58,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336409483] [2022-11-03 02:22:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336409483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:58,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:58,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123699968] [2022-11-03 02:22:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:58,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:58,988 INFO L87 Difference]: Start difference. First operand 2703 states and 4415 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:59,309 INFO L93 Difference]: Finished difference Result 6714 states and 11061 transitions. [2022-11-03 02:22:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 118 [2022-11-03 02:22:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:59,333 INFO L225 Difference]: With dead ends: 6714 [2022-11-03 02:22:59,334 INFO L226 Difference]: Without dead ends: 4433 [2022-11-03 02:22:59,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:59,345 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 49 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:59,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 526 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-11-03 02:22:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4428. [2022-11-03 02:22:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 3140 states have (on average 1.5028662420382166) internal successors, (4719), 3145 states have internal predecessors, (4719), 1259 states have call successors, (1259), 29 states have call predecessors, (1259), 28 states have return successors, (1256), 1255 states have call predecessors, (1256), 1256 states have call successors, (1256) [2022-11-03 02:22:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 7234 transitions. [2022-11-03 02:22:59,725 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 7234 transitions. Word has length 118 [2022-11-03 02:22:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:59,726 INFO L495 AbstractCegarLoop]: Abstraction has 4428 states and 7234 transitions. [2022-11-03 02:22:59,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:22:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 7234 transitions. [2022-11-03 02:22:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 02:22:59,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:59,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:22:59,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1698587418, now seen corresponding path program 1 times [2022-11-03 02:22:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:59,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046749838] [2022-11-03 02:22:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:22:59,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046749838] [2022-11-03 02:22:59,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046749838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:59,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:59,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:59,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452583458] [2022-11-03 02:22:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:59,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:59,862 INFO L87 Difference]: Start difference. First operand 4428 states and 7234 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:00,383 INFO L93 Difference]: Finished difference Result 11130 states and 18346 transitions. [2022-11-03 02:23:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 119 [2022-11-03 02:23:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:00,423 INFO L225 Difference]: With dead ends: 11130 [2022-11-03 02:23:00,424 INFO L226 Difference]: Without dead ends: 7390 [2022-11-03 02:23:00,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:00,436 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 47 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:00,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 514 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2022-11-03 02:23:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 7385. [2022-11-03 02:23:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7385 states, 5275 states have (on average 1.498388625592417) internal successors, (7904), 5280 states have internal predecessors, (7904), 2081 states have call successors, (2081), 29 states have call predecessors, (2081), 28 states have return successors, (2078), 2077 states have call predecessors, (2078), 2078 states have call successors, (2078) [2022-11-03 02:23:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 12063 transitions. [2022-11-03 02:23:01,053 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 12063 transitions. Word has length 119 [2022-11-03 02:23:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:01,054 INFO L495 AbstractCegarLoop]: Abstraction has 7385 states and 12063 transitions. [2022-11-03 02:23:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 12063 transitions. [2022-11-03 02:23:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-03 02:23:01,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:01,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:01,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:23:01,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 850085465, now seen corresponding path program 1 times [2022-11-03 02:23:01,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919536560] [2022-11-03 02:23:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:23:01,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:01,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919536560] [2022-11-03 02:23:01,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919536560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:01,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:01,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:01,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434777901] [2022-11-03 02:23:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:01,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:01,186 INFO L87 Difference]: Start difference. First operand 7385 states and 12063 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:02,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:02,101 INFO L93 Difference]: Finished difference Result 18597 states and 30608 transitions. [2022-11-03 02:23:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 120 [2022-11-03 02:23:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:02,166 INFO L225 Difference]: With dead ends: 18597 [2022-11-03 02:23:02,166 INFO L226 Difference]: Without dead ends: 12334 [2022-11-03 02:23:02,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:02,189 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 45 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:02,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 510 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12334 states. [2022-11-03 02:23:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12334 to 12329. [2022-11-03 02:23:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12329 states, 9016 states have (on average 1.5001109139307898) internal successors, (13525), 9021 states have internal predecessors, (13525), 3284 states have call successors, (3284), 29 states have call predecessors, (3284), 28 states have return successors, (3281), 3280 states have call predecessors, (3281), 3281 states have call successors, (3281) [2022-11-03 02:23:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 20090 transitions. [2022-11-03 02:23:03,169 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 20090 transitions. Word has length 120 [2022-11-03 02:23:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:03,169 INFO L495 AbstractCegarLoop]: Abstraction has 12329 states and 20090 transitions. [2022-11-03 02:23:03,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 20090 transitions. [2022-11-03 02:23:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:23:03,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:03,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:23:03,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2090178951, now seen corresponding path program 1 times [2022-11-03 02:23:03,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:03,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235995208] [2022-11-03 02:23:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:03,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:23:03,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235995208] [2022-11-03 02:23:03,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235995208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:03,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:03,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439342313] [2022-11-03 02:23:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:03,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:03,360 INFO L87 Difference]: Start difference. First operand 12329 states and 20090 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:04,935 INFO L93 Difference]: Finished difference Result 32601 states and 53470 transitions. [2022-11-03 02:23:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-03 02:23:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:05,043 INFO L225 Difference]: With dead ends: 32601 [2022-11-03 02:23:05,043 INFO L226 Difference]: Without dead ends: 21846 [2022-11-03 02:23:05,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:05,082 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 43 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:05,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 512 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21846 states. [2022-11-03 02:23:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21846 to 21841. [2022-11-03 02:23:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21841 states, 16078 states have (on average 1.4925985819131733) internal successors, (23998), 16083 states have internal predecessors, (23998), 5734 states have call successors, (5734), 29 states have call predecessors, (5734), 28 states have return successors, (5731), 5730 states have call predecessors, (5731), 5731 states have call successors, (5731) [2022-11-03 02:23:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21841 states to 21841 states and 35463 transitions. [2022-11-03 02:23:07,055 INFO L78 Accepts]: Start accepts. Automaton has 21841 states and 35463 transitions. Word has length 121 [2022-11-03 02:23:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:07,057 INFO L495 AbstractCegarLoop]: Abstraction has 21841 states and 35463 transitions. [2022-11-03 02:23:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21841 states and 35463 transitions. [2022-11-03 02:23:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 02:23:07,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:07,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:23:07,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash 132268902, now seen corresponding path program 1 times [2022-11-03 02:23:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:07,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792347904] [2022-11-03 02:23:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:07,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792347904] [2022-11-03 02:23:07,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792347904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:07,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:07,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400445731] [2022-11-03 02:23:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:07,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:07,213 INFO L87 Difference]: Start difference. First operand 21841 states and 35463 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:23:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:10,026 INFO L93 Difference]: Finished difference Result 59288 states and 96722 transitions. [2022-11-03 02:23:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 111 [2022-11-03 02:23:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:10,276 INFO L225 Difference]: With dead ends: 59288 [2022-11-03 02:23:10,277 INFO L226 Difference]: Without dead ends: 39616 [2022-11-03 02:23:10,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:10,323 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 41 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:10,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 512 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39616 states. [2022-11-03 02:23:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39616 to 39611. [2022-11-03 02:23:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39611 states, 29335 states have (on average 1.4819839781830577) internal successors, (43474), 29340 states have internal predecessors, (43474), 10247 states have call successors, (10247), 29 states have call predecessors, (10247), 28 states have return successors, (10244), 10243 states have call predecessors, (10244), 10244 states have call successors, (10244) [2022-11-03 02:23:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39611 states to 39611 states and 63965 transitions. [2022-11-03 02:23:13,694 INFO L78 Accepts]: Start accepts. Automaton has 39611 states and 63965 transitions. Word has length 111 [2022-11-03 02:23:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:13,695 INFO L495 AbstractCegarLoop]: Abstraction has 39611 states and 63965 transitions. [2022-11-03 02:23:13,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:23:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39611 states and 63965 transitions. [2022-11-03 02:23:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 02:23:13,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:13,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:23:13,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -838695719, now seen corresponding path program 1 times [2022-11-03 02:23:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052931660] [2022-11-03 02:23:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:23:13,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:13,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052931660] [2022-11-03 02:23:13,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052931660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:13,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:13,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:13,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312334525] [2022-11-03 02:23:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:13,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:13,903 INFO L87 Difference]: Start difference. First operand 39611 states and 63965 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:18,359 INFO L93 Difference]: Finished difference Result 73186 states and 118357 transitions. [2022-11-03 02:23:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2022-11-03 02:23:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:18,674 INFO L225 Difference]: With dead ends: 73186 [2022-11-03 02:23:18,674 INFO L226 Difference]: Without dead ends: 73059 [2022-11-03 02:23:18,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:18,700 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 39 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:18,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 514 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73059 states. [2022-11-03 02:23:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73059 to 73054. [2022-11-03 02:23:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73054 states, 54410 states have (on average 1.4680389634258408) internal successors, (79876), 54415 states have internal predecessors, (79876), 18615 states have call successors, (18615), 29 states have call predecessors, (18615), 28 states have return successors, (18612), 18611 states have call predecessors, (18612), 18612 states have call successors, (18612) [2022-11-03 02:23:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73054 states to 73054 states and 117103 transitions. [2022-11-03 02:23:23,965 INFO L78 Accepts]: Start accepts. Automaton has 73054 states and 117103 transitions. Word has length 123 [2022-11-03 02:23:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:23,966 INFO L495 AbstractCegarLoop]: Abstraction has 73054 states and 117103 transitions. [2022-11-03 02:23:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:23:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 73054 states and 117103 transitions. [2022-11-03 02:23:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:23:24,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:24,042 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:23:24,042 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 45880805, now seen corresponding path program 1 times [2022-11-03 02:23:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:24,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269402979] [2022-11-03 02:23:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:24,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:23:28,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:28,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269402979] [2022-11-03 02:23:28,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269402979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:28,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237908503] [2022-11-03 02:23:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:28,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:28,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:28,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:28,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d79c27-a5d2-479e-a332-79b58c13f0ac/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:23:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:28,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-03 02:23:28,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:23:30,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:23:35,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237908503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:35,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1799229490] [2022-11-03 02:23:35,564 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2022-11-03 02:23:35,564 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:23:35,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:23:35,565 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:23:35,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:03,521 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:24:03,802 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2022-11-03 02:24:05,595 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-03 02:24:05,633 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:24:05,914 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-03 02:24:08,908 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 265 for LOIs