./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta --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 aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 --- 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-dbf71c6-m [2022-10-17 17:38:41,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:38:41,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:38:41,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:38:41,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:38:41,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:38:41,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:38:41,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:38:41,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:38:41,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:38:41,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:38:41,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:38:41,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:38:41,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:38:41,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:38:41,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:38:41,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:38:41,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:38:41,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:38:41,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:38:41,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:38:41,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:38:41,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:38:41,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:38:41,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:38:41,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:38:41,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:38:41,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:38:41,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:38:41,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:38:41,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:38:41,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:38:41,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:38:41,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:38:41,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:38:41,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:38:41,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:38:41,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:38:41,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:38:41,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:38:41,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:38:41,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:38:41,928 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:38:41,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:38:41,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:38:41,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:38:41,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:38:41,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:38:41,934 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:38:41,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:38:41,934 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:38:41,935 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:38:41,936 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:38:41,937 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:38:41,937 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:38:41,937 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:38:41,938 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:38:41,938 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:38:41,938 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:38:41,939 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:38:41,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:38:41,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:38:41,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:38:41,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:38:41,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:38:41,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:38:41,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:38:41,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:38:41,956 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:38:41,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:38:41,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:38:41,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:38:41,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:38:41,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:38:41,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:41,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:38:41,958 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:38:41,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:38:41,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:38:41,959 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:38:41,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:38:41,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:38:41,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:38:41,960 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_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 [2022-10-17 17:38:42,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:38:42,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:38:42,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:38:42,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:38:42,275 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:38:42,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-10-17 17:38:42,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/data/551f2a968/ae1f12d05fd24c40b705c4b1dc7810ad/FLAG620f1f504 [2022-10-17 17:38:43,011 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:43,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-10-17 17:38:43,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/data/551f2a968/ae1f12d05fd24c40b705c4b1dc7810ad/FLAG620f1f504 [2022-10-17 17:38:43,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/data/551f2a968/ae1f12d05fd24c40b705c4b1dc7810ad [2022-10-17 17:38:43,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:43,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:43,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:43,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:43,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:43,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:43" (1/1) ... [2022-10-17 17:38:43,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512f30d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:43, skipping insertion in model container [2022-10-17 17:38:43,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:43" (1/1) ... [2022-10-17 17:38:43,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:43,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:44,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-10-17 17:38:44,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:44,217 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:44,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-10-17 17:38:44,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:44,417 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44 WrapperNode [2022-10-17 17:38:44,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:44,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:44,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:44,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:44,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,553 INFO L138 Inliner]: procedures = 130, calls = 218, calls flagged for inlining = 59, calls inlined = 52, statements flattened = 970 [2022-10-17 17:38:44,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:44,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:44,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:44,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:44,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:44,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:44,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:44,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:44,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (1/1) ... [2022-10-17 17:38:44,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:44,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:44,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 17:38:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 17:38:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-10-17 17:38:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-10-17 17:38:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-10-17 17:38:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-10-17 17:38:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:38:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:38:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-10-17 17:38:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-10-17 17:38:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:38:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:38:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:38:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:38:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:38:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:38:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:38:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:38:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:38:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:38:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:38:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:38:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:38:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:38:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:38:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:38:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:38:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-10-17 17:38:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-10-17 17:38:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:38:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:38:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:38:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:38:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:38:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:38:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:38:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:38:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:38:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:38:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:38:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:38:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:38:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:38:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-10-17 17:38:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-10-17 17:38:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:45,088 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:45,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:46,375 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:47,173 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:47,174 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:38:47,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:47 BoogieIcfgContainer [2022-10-17 17:38:47,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:47,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:47,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:47,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:47,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:43" (1/3) ... [2022-10-17 17:38:47,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6472d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:47, skipping insertion in model container [2022-10-17 17:38:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:44" (2/3) ... [2022-10-17 17:38:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6472d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:47, skipping insertion in model container [2022-10-17 17:38:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:47" (3/3) ... [2022-10-17 17:38:47,187 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2022-10-17 17:38:47,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:47,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:38:47,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:47,294 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;@7b528f73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:47,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:38:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-17 17:38:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 17:38:47,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:47,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:47,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:47,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1503743867, now seen corresponding path program 1 times [2022-10-17 17:38:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:47,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995637883] [2022-10-17 17:38:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:47,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:47,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:47,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995637883] [2022-10-17 17:38:47,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995637883] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:47,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:47,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:38:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971741381] [2022-10-17 17:38:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:38:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:38:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:38:47,860 INFO L87 Difference]: Start difference. First operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:48,050 INFO L93 Difference]: Finished difference Result 266 states and 353 transitions. [2022-10-17 17:38:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:38:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-10-17 17:38:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:48,068 INFO L225 Difference]: With dead ends: 266 [2022-10-17 17:38:48,068 INFO L226 Difference]: Without dead ends: 176 [2022-10-17 17:38:48,077 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 [2022-10-17 17:38:48,082 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:48,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-10-17 17:38:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-10-17 17:38:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 101 states have (on average 1.297029702970297) internal successors, (131), 103 states have internal predecessors, (131), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-17 17:38:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2022-10-17 17:38:48,182 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 65 [2022-10-17 17:38:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:48,184 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2022-10-17 17:38:48,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2022-10-17 17:38:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 17:38:48,201 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:48,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:48,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:38:48,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2139939892, now seen corresponding path program 1 times [2022-10-17 17:38:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:48,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817088863] [2022-10-17 17:38:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:48,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:48,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817088863] [2022-10-17 17:38:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817088863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:48,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:48,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:38:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443539602] [2022-10-17 17:38:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:38:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:38:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:48,592 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:48,769 INFO L93 Difference]: Finished difference Result 262 states and 338 transitions. [2022-10-17 17:38:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:38:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-10-17 17:38:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:48,778 INFO L225 Difference]: With dead ends: 262 [2022-10-17 17:38:48,778 INFO L226 Difference]: Without dead ends: 178 [2022-10-17 17:38:48,785 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 [2022-10-17 17:38:48,788 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:48,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-10-17 17:38:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-10-17 17:38:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 105 states have internal predecessors, (133), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-17 17:38:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 236 transitions. [2022-10-17 17:38:48,830 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 236 transitions. Word has length 66 [2022-10-17 17:38:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:48,831 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 236 transitions. [2022-10-17 17:38:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 236 transitions. [2022-10-17 17:38:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 17:38:48,840 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:48,840 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] [2022-10-17 17:38:48,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:38:48,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2073274980, now seen corresponding path program 1 times [2022-10-17 17:38:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:48,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831857096] [2022-10-17 17:38:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:49,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:49,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831857096] [2022-10-17 17:38:49,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831857096] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:49,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:49,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:38:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508839282] [2022-10-17 17:38:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:38:49,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:38:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:49,103 INFO L87 Difference]: Start difference. First operand 178 states and 236 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:49,274 INFO L93 Difference]: Finished difference Result 391 states and 539 transitions. [2022-10-17 17:38:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:38:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-10-17 17:38:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:49,280 INFO L225 Difference]: With dead ends: 391 [2022-10-17 17:38:49,280 INFO L226 Difference]: Without dead ends: 231 [2022-10-17 17:38:49,284 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 [2022-10-17 17:38:49,290 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 59 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:49,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 413 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-10-17 17:38:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-10-17 17:38:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 139 states have internal predecessors, (188), 66 states have call successors, (66), 22 states have call predecessors, (66), 22 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-10-17 17:38:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 319 transitions. [2022-10-17 17:38:49,337 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 319 transitions. Word has length 71 [2022-10-17 17:38:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:49,340 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 319 transitions. [2022-10-17 17:38:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:38:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 319 transitions. [2022-10-17 17:38:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-17 17:38:49,346 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:49,346 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] [2022-10-17 17:38:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:38:49,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 973881651, now seen corresponding path program 1 times [2022-10-17 17:38:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453473930] [2022-10-17 17:38:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:49,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:49,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453473930] [2022-10-17 17:38:49,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453473930] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:38:49,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500911013] [2022-10-17 17:38:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:49,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:49,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15022b2c-8a3b-48ea-9c45-65aa3e64fdce/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:38:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:38:50,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:50,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:38:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 17:38:50,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500911013] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:38:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1288684252] [2022-10-17 17:38:50,290 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-10-17 17:38:50,291 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:50,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:50,302 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:50,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs