./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS --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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- 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-8393723 [2022-11-19 07:25:37,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:25:37,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:25:37,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:25:37,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:25:37,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:25:37,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:25:37,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:25:37,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:25:37,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:25:37,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:25:37,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:25:37,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:25:37,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:25:37,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:25:37,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:25:37,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:25:37,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:25:37,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:25:37,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:25:37,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:25:37,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:25:37,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:25:37,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:25:37,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:25:37,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:25:37,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:25:37,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:25:37,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:25:37,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:25:37,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:25:37,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:25:37,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:25:37,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:25:37,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:25:37,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:25:37,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:25:37,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:25:37,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:25:37,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:25:37,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:25:37,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:25:37,806 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:25:37,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:25:37,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:25:37,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:25:37,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:25:37,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:25:37,810 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:25:37,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:25:37,811 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:25:37,811 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:25:37,812 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:25:37,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:25:37,813 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:25:37,813 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:25:37,813 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:25:37,814 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:25:37,814 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:25:37,814 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:25:37,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:25:37,815 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:25:37,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:25:37,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:25:37,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:25:37,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:25:37,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:25:37,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:25:37,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:25:37,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:25:37,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:25:37,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:25:37,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:25:37,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:25:37,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:37,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:25:37,819 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:25:37,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:25:37,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:25:37,820 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:25:37,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:25:37,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:25:37,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:25:37,822 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_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2022-11-19 07:25:38,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:25:38,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:25:38,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:25:38,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:25:38,197 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:25:38,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2022-11-19 07:25:38,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/data/92f5f576d/644f8de7b7554ebf840deb0a19c8d8a7/FLAG1b6e30ed3 [2022-11-19 07:25:38,978 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:25:38,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2022-11-19 07:25:39,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/data/92f5f576d/644f8de7b7554ebf840deb0a19c8d8a7/FLAG1b6e30ed3 [2022-11-19 07:25:39,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/data/92f5f576d/644f8de7b7554ebf840deb0a19c8d8a7 [2022-11-19 07:25:39,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:25:39,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:25:39,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:39,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:25:39,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:25:39,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:39" (1/1) ... [2022-11-19 07:25:39,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec3af2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:39, skipping insertion in model container [2022-11-19 07:25:39,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:25:39" (1/1) ... [2022-11-19 07:25:39,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:25:39,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:25:39,736 WARN L234 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_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-11-19 07:25:40,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:40,036 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:25:40,064 WARN L234 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_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-11-19 07:25:40,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:25:40,215 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:25:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40 WrapperNode [2022-11-19 07:25:40,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:25:40,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:40,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:25:40,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:25:40,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,383 INFO L138 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1005 [2022-11-19 07:25:40,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:25:40,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:25:40,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:25:40,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:25:40,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:25:40,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:25:40,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:25:40,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:25:40,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (1/1) ... [2022-11-19 07:25:40,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:25:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:40,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:25:40,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:25:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:25:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:25:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:25:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:25:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:25:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:25:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:25:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:25:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:25:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:25:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:25:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:25:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:25:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:25:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:25:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:25:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:25:40,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:25:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:25:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:25:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:25:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:25:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:25:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:25:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:25:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:25:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:25:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:25:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:25:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:25:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:25:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:25:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:25:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:25:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:25:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:25:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:25:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:25:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:25:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:25:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:25:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:25:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:25:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:25:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:25:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:25:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:25:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:25:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:25:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:25:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:25:40,824 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:25:40,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:25:41,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:25:42,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:25:42,415 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:25:42,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:42 BoogieIcfgContainer [2022-11-19 07:25:42,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:25:42,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:25:42,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:25:42,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:25:42,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:25:39" (1/3) ... [2022-11-19 07:25:42,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60034bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:42, skipping insertion in model container [2022-11-19 07:25:42,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:25:40" (2/3) ... [2022-11-19 07:25:42,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60034bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:25:42, skipping insertion in model container [2022-11-19 07:25:42,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:25:42" (3/3) ... [2022-11-19 07:25:42,429 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2022-11-19 07:25:42,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:25:42,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:25:42,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:25:42,527 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;@364cc231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:25:42,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:25:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-19 07:25:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:25:42,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:42,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:42,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1450133937, now seen corresponding path program 1 times [2022-11-19 07:25:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348538231] [2022-11-19 07:25:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:42,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:42,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348538231] [2022-11-19 07:25:42,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348538231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:42,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:42,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:25:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767695692] [2022-11-19 07:25:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:25:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:25:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:25:42,993 INFO L87 Difference]: Start difference. First operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:43,232 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2022-11-19 07:25:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:25:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2022-11-19 07:25:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:43,248 INFO L225 Difference]: With dead ends: 313 [2022-11-19 07:25:43,249 INFO L226 Difference]: Without dead ends: 195 [2022-11-19 07:25:43,256 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 [2022-11-19 07:25:43,260 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:43,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:25:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-19 07:25:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-19 07:25:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 116 states have internal predecessors, (145), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-19 07:25:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2022-11-19 07:25:43,325 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 77 [2022-11-19 07:25:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:43,327 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2022-11-19 07:25:43,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2022-11-19 07:25:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:25:43,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:43,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:25:43,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:25:43,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:43,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash 366795396, now seen corresponding path program 1 times [2022-11-19 07:25:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:43,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386402908] [2022-11-19 07:25:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:43,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:43,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386402908] [2022-11-19 07:25:43,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386402908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:43,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:43,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:25:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476926899] [2022-11-19 07:25:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:43,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:25:43,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:25:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:25:43,616 INFO L87 Difference]: Start difference. First operand 195 states and 260 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:43,738 INFO L93 Difference]: Finished difference Result 309 states and 400 transitions. [2022-11-19 07:25:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:25:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2022-11-19 07:25:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:43,741 INFO L225 Difference]: With dead ends: 309 [2022-11-19 07:25:43,741 INFO L226 Difference]: Without dead ends: 197 [2022-11-19 07:25:43,742 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 [2022-11-19 07:25:43,743 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:43,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:25:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-19 07:25:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-19 07:25:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 118 states have internal predecessors, (147), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-19 07:25:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2022-11-19 07:25:43,764 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 78 [2022-11-19 07:25:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:43,765 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2022-11-19 07:25:43,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2022-11-19 07:25:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:25:43,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:43,768 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] [2022-11-19 07:25:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:25:43,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -720933932, now seen corresponding path program 1 times [2022-11-19 07:25:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:43,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910354249] [2022-11-19 07:25:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:43,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910354249] [2022-11-19 07:25:43,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910354249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:25:43,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:25:43,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:25:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543594710] [2022-11-19 07:25:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:25:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:25:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:25:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:25:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:25:43,944 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:25:44,072 INFO L93 Difference]: Finished difference Result 424 states and 583 transitions. [2022-11-19 07:25:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:25:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2022-11-19 07:25:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:25:44,076 INFO L225 Difference]: With dead ends: 424 [2022-11-19 07:25:44,079 INFO L226 Difference]: Without dead ends: 245 [2022-11-19 07:25:44,081 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 [2022-11-19 07:25:44,083 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 57 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:25:44,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:25:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-19 07:25:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2022-11-19 07:25:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 150 states have internal predecessors, (200), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-19 07:25:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 337 transitions. [2022-11-19 07:25:44,125 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 337 transitions. Word has length 83 [2022-11-19 07:25:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:25:44,128 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 337 transitions. [2022-11-19 07:25:44,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:25:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 337 transitions. [2022-11-19 07:25:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:25:44,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:25:44,140 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] [2022-11-19 07:25:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:25:44,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:25:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:25:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1953894951, now seen corresponding path program 1 times [2022-11-19 07:25:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:25:44,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596741154] [2022-11-19 07:25:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:44,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:25:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:44,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:25:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596741154] [2022-11-19 07:25:44,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596741154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:25:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638961737] [2022-11-19 07:25:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:25:44,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:25:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:25:44,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:25:44,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:25:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:25:44,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:25:44,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:25:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:45,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:25:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:25:45,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638961737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:25:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1205247016] [2022-11-19 07:25:45,133 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-19 07:25:45,133 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:25:45,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:25:45,144 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:25:45,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:26:15,152 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:26:15,467 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:26:15,790 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:26:45,442 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:01,225 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:08,309 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:21,184 WARN L233 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 581 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:34,140 WARN L233 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 583 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:43,529 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 568 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:52,840 WARN L233 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 564 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:54,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1205247016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:27:54,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:27:54,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 07:27:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319011818] [2022-11-19 07:27:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:27:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:27:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:27:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:27:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:27:54,184 INFO L87 Difference]: Start difference. First operand 240 states and 337 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-19 07:28:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:03,145 INFO L93 Difference]: Finished difference Result 559 states and 835 transitions. [2022-11-19 07:28:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:28:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2022-11-19 07:28:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:03,148 INFO L225 Difference]: With dead ends: 559 [2022-11-19 07:28:03,149 INFO L226 Difference]: Without dead ends: 337 [2022-11-19 07:28:03,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:28:03,151 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 140 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:03,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 3665 Invalid, 2083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-19 07:28:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-19 07:28:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 263. [2022-11-19 07:28:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 169 states have (on average 1.378698224852071) internal successors, (233), 172 states have internal predecessors, (233), 69 states have call successors, (69), 24 states have call predecessors, (69), 24 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-19 07:28:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2022-11-19 07:28:03,317 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 84 [2022-11-19 07:28:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:03,317 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2022-11-19 07:28:03,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-19 07:28:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2022-11-19 07:28:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:28:03,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:03,320 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-19 07:28:03,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:28:03,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:03,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 203216646, now seen corresponding path program 1 times [2022-11-19 07:28:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:03,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033489133] [2022-11-19 07:28:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:03,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033489133] [2022-11-19 07:28:03,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033489133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:03,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:03,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:28:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353520185] [2022-11-19 07:28:03,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:03,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:03,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:03,660 INFO L87 Difference]: Start difference. First operand 263 states and 370 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:03,957 INFO L93 Difference]: Finished difference Result 619 states and 904 transitions. [2022-11-19 07:28:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-19 07:28:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:03,963 INFO L225 Difference]: With dead ends: 619 [2022-11-19 07:28:03,964 INFO L226 Difference]: Without dead ends: 380 [2022-11-19 07:28:03,965 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 [2022-11-19 07:28:03,965 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 55 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:03,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 468 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-19 07:28:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 375. [2022-11-19 07:28:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 256 states have (on average 1.44140625) internal successors, (369), 259 states have internal predecessors, (369), 94 states have call successors, (94), 24 states have call predecessors, (94), 24 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-19 07:28:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 556 transitions. [2022-11-19 07:28:04,195 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 556 transitions. Word has length 89 [2022-11-19 07:28:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:04,196 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 556 transitions. [2022-11-19 07:28:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 556 transitions. [2022-11-19 07:28:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:28:04,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:04,200 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-19 07:28:04,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:28:04,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1480359538, now seen corresponding path program 1 times [2022-11-19 07:28:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275621770] [2022-11-19 07:28:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:04,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:04,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:04,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275621770] [2022-11-19 07:28:04,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275621770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:28:04,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029550305] [2022-11-19 07:28:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:04,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:04,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:04,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:04,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:28:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:04,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:28:04,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:04,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:04,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029550305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:04,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069870281] [2022-11-19 07:28:04,813 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-19 07:28:04,813 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:04,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:04,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:04,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:29:02,073 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:29:02,425 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:29:02,715 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:29:36,985 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:52,699 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:59,872 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:20,299 WARN L233 SmtUtils]: Spent 20.11s on a formula simplification. DAG size of input: 589 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:33,477 WARN L233 SmtUtils]: Spent 12.82s on a formula simplification. DAG size of input: 591 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:49,212 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 564 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:54,682 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 560 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:09,450 WARN L233 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 549 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:15,825 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 580 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:15,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2069870281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:15,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:31:15,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:31:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072165846] [2022-11-19 07:31:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:31:15,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:31:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:31:15,834 INFO L87 Difference]: Start difference. First operand 375 states and 556 transitions. Second operand has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-19 07:31:35,523 WARN L233 SmtUtils]: Spent 18.07s on a formula simplification. DAG size of input: 537 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:41,783 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 394 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:11,878 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 574 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:17,588 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 351 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:25,869 INFO L93 Difference]: Finished difference Result 845 states and 1312 transitions. [2022-11-19 07:32:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:32:25,870 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2022-11-19 07:32:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:25,874 INFO L225 Difference]: With dead ends: 845 [2022-11-19 07:32:25,874 INFO L226 Difference]: Without dead ends: 533 [2022-11-19 07:32:25,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 191.4s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:32:25,876 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 305 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:25,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 3625 Invalid, 2384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-19 07:32:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-19 07:32:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 437. [2022-11-19 07:32:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 314 states have (on average 1.4904458598726114) internal successors, (468), 319 states have internal predecessors, (468), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-19 07:32:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 661 transitions. [2022-11-19 07:32:26,183 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 661 transitions. Word has length 90 [2022-11-19 07:32:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:26,184 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 661 transitions. [2022-11-19 07:32:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-19 07:32:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 661 transitions. [2022-11-19 07:32:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:32:26,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:26,187 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] [2022-11-19 07:32:26,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:26,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:26,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1468419200, now seen corresponding path program 1 times [2022-11-19 07:32:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:26,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516269997] [2022-11-19 07:32:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:32:26,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516269997] [2022-11-19 07:32:26,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516269997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:32:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304246781] [2022-11-19 07:32:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:26,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:26,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:32:26,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:32:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:27,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:32:27,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:32:27,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:32:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:32:27,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304246781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:32:27,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1826966894] [2022-11-19 07:32:27,159 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-19 07:32:27,160 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:32:27,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:32:27,161 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:32:27,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:34:40,671 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-19 07:34:40,961 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-19 07:34:41,272 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-19 07:34:41,608 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-19 07:34:41,677 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:34:41,966 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:35:13,808 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:29,588 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:36,746 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:53,901 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 543 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:02,915 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 545 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:10,720 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 565 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:16,290 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 561 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:32,435 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 541 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:47,814 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 522 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:47,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1826966894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:47,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:36:47,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 07:36:47,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155537996] [2022-11-19 07:36:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:47,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:36:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:36:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:36:47,823 INFO L87 Difference]: Start difference. First operand 437 states and 661 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-19 07:37:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:37:13,298 INFO L93 Difference]: Finished difference Result 908 states and 1415 transitions. [2022-11-19 07:37:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:37:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2022-11-19 07:37:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:37:13,303 INFO L225 Difference]: With dead ends: 908 [2022-11-19 07:37:13,303 INFO L226 Difference]: Without dead ends: 596 [2022-11-19 07:37:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 134.7s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 07:37:13,305 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 147 mSDsluCounter, 3920 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:37:13,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 4161 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-11-19 07:37:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-19 07:37:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 522. [2022-11-19 07:37:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 391 states have (on average 1.5166240409207161) internal successors, (593), 398 states have internal predecessors, (593), 102 states have call successors, (102), 28 states have call predecessors, (102), 28 states have return successors, (101), 97 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-19 07:37:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 796 transitions. [2022-11-19 07:37:13,680 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 796 transitions. Word has length 93 [2022-11-19 07:37:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:37:13,681 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 796 transitions. [2022-11-19 07:37:13,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-19 07:37:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 796 transitions. [2022-11-19 07:37:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:37:13,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:37:13,684 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] [2022-11-19 07:37:13,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:37:13,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:37:13,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:37:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:37:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1953297325, now seen corresponding path program 1 times [2022-11-19 07:37:13,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:37:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979510820] [2022-11-19 07:37:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:37:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:37:14,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:37:14,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979510820] [2022-11-19 07:37:14,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979510820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:37:14,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078587506] [2022-11-19 07:37:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:14,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:37:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:14,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:37:14,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dc6ceac-2da1-4c3e-927a-e18d32a00cd2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:37:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:14,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:37:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:37:14,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:37:14,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078587506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:14,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024232710] [2022-11-19 07:37:14,507 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-19 07:37:14,508 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:37:14,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:37:14,510 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:37:14,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:38:13,621 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:38:13,915 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:38:14,204 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-11-19 07:38:16,103 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 07:38:16,141 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-19 07:38:41,086 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-19 07:38:41,757 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-19 07:38:41,800 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-11-19 07:38:42,493 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-19 07:38:42,565 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-19 07:38:42,614 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-19 07:38:44,646 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:39:07,321 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:21,906 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)