./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9 --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 28cb2c1915c61c386f3394fd53d16960f7cb856128220666f501d4f4a00b7894 --- 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-6b4ec56 [2022-11-20 19:46:35,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:46:35,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:46:35,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:46:35,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:46:35,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:46:35,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:46:35,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:46:35,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:46:35,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:46:35,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:46:35,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:46:35,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:46:35,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:46:35,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:46:35,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:46:35,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:46:35,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:46:35,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:46:35,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:46:35,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:46:35,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:46:35,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:46:35,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:46:35,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:46:35,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:46:35,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:46:35,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:46:35,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:46:35,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:46:35,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:46:35,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:46:35,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:46:35,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:46:35,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:46:35,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:46:35,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:46:35,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:46:35,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:46:35,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:46:35,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:46:35,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:46:35,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:46:35,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:46:35,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:46:35,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:46:35,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:46:35,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:46:35,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:46:35,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:46:35,553 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:46:35,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:46:35,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:46:35,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:46:35,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:46:35,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:46:35,554 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:46:35,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:46:35,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:46:35,555 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:46:35,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:46:35,556 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:46:35,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:46:35,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:46:35,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:46:35,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:46:35,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:46:35,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:46:35,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:46:35,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:46:35,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:46:35,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:46:35,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:46:35,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:46:35,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:35,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:46:35,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:46:35,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:46:35,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:46:35,560 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:46:35,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:46:35,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:46:35,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:46:35,560 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_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28cb2c1915c61c386f3394fd53d16960f7cb856128220666f501d4f4a00b7894 [2022-11-20 19:46:35,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:46:35,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:46:35,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:46:35,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:46:35,801 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:46:35,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec9_product31.cil.c [2022-11-20 19:46:38,872 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:46:39,241 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:46:39,242 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c [2022-11-20 19:46:39,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/data/132433388/2c4998bdf6034210a9104247f0ffdd5a/FLAG07ca90134 [2022-11-20 19:46:39,294 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/data/132433388/2c4998bdf6034210a9104247f0ffdd5a [2022-11-20 19:46:39,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:46:39,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:46:39,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:39,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:46:39,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:46:39,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:39" (1/1) ... [2022-11-20 19:46:39,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:39, skipping insertion in model container [2022-11-20 19:46:39,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:46:39" (1/1) ... [2022-11-20 19:46:39,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:46:39,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:46:39,959 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c[56976,56989] [2022-11-20 19:46:39,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:40,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:46:40,170 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/sv-benchmarks/c/product-lines/email_spec9_product31.cil.c[56976,56989] [2022-11-20 19:46:40,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:46:40,209 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:46:40,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40 WrapperNode [2022-11-20 19:46:40,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:46:40,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:40,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:46:40,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:46:40,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,316 INFO L138 Inliner]: procedures = 132, calls = 223, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1032 [2022-11-20 19:46:40,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:46:40,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:46:40,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:46:40,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:46:40,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:46:40,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:46:40,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:46:40,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:46:40,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (1/1) ... [2022-11-20 19:46:40,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:46:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:40,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:46:40,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:46:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 19:46:40,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 19:46:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 19:46:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 19:46:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 19:46:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 19:46:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 19:46:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 19:46:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 19:46:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 19:46:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 19:46:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 19:46:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 19:46:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 19:46:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 19:46:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 19:46:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 19:46:40,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 19:46:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 19:46:40,522 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 19:46:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 19:46:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 19:46:40,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 19:46:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 19:46:40,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 19:46:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:46:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 19:46:40,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 19:46:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 19:46:40,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 19:46:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 19:46:40,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 19:46:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 19:46:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 19:46:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 19:46:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 19:46:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 19:46:40,527 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 19:46:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 19:46:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 19:46:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 19:46:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 19:46:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 19:46:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 19:46:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 19:46:40,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 19:46:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:46:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 19:46:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 19:46:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:46:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:46:40,818 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:46:40,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:46:41,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:46:42,245 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:46:42,246 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:46:42,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:42 BoogieIcfgContainer [2022-11-20 19:46:42,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:46:42,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:46:42,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:46:42,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:46:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:46:39" (1/3) ... [2022-11-20 19:46:42,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cdce32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:42, skipping insertion in model container [2022-11-20 19:46:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:46:40" (2/3) ... [2022-11-20 19:46:42,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cdce32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:46:42, skipping insertion in model container [2022-11-20 19:46:42,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:46:42" (3/3) ... [2022-11-20 19:46:42,261 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product31.cil.c [2022-11-20 19:46:42,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:46:42,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:46:42,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:46:42,358 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;@3d2f7cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:46:42,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:46:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-20 19:46:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 19:46:42,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:42,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:42,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2060767377, now seen corresponding path program 1 times [2022-11-20 19:46:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:42,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022203584] [2022-11-20 19:46:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:42,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:42,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022203584] [2022-11-20 19:46:42,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022203584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:42,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:42,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:46:42,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001676159] [2022-11-20 19:46:42,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:46:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:46:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:46:42,911 INFO L87 Difference]: Start difference. First operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:43,100 INFO L93 Difference]: Finished difference Result 319 states and 422 transitions. [2022-11-20 19:46:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:46:43,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-11-20 19:46:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:43,113 INFO L225 Difference]: With dead ends: 319 [2022-11-20 19:46:43,113 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 19:46:43,117 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 [2022-11-20 19:46:43,120 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:43,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 19:46:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-20 19:46:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 118 states have internal predecessors, (148), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-20 19:46:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-11-20 19:46:43,176 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 64 [2022-11-20 19:46:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:43,178 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-11-20 19:46:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-11-20 19:46:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 19:46:43,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:43,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:43,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:46:43,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:43,183 INFO L85 PathProgramCache]: Analyzing trace with hash -143574967, now seen corresponding path program 1 times [2022-11-20 19:46:43,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934442753] [2022-11-20 19:46:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:43,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:43,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:43,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934442753] [2022-11-20 19:46:43,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934442753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:43,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:43,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735393684] [2022-11-20 19:46:43,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:43,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:43,508 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:43,649 INFO L93 Difference]: Finished difference Result 315 states and 410 transitions. [2022-11-20 19:46:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:43,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-20 19:46:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:43,652 INFO L225 Difference]: With dead ends: 315 [2022-11-20 19:46:43,652 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 19:46:43,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:43,655 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:43,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 19:46:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-20 19:46:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-20 19:46:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-11-20 19:46:43,689 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 65 [2022-11-20 19:46:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:43,690 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-11-20 19:46:43,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-11-20 19:46:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 19:46:43,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:43,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:46:43,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash 637185191, now seen corresponding path program 1 times [2022-11-20 19:46:43,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:43,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508764124] [2022-11-20 19:46:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:43,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:43,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508764124] [2022-11-20 19:46:43,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508764124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:46:43,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:46:43,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:46:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926227093] [2022-11-20 19:46:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:46:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:46:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:46:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:46:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:46:43,907 INFO L87 Difference]: Start difference. First operand 200 states and 267 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:46:44,058 INFO L93 Difference]: Finished difference Result 430 states and 593 transitions. [2022-11-20 19:46:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:46:44,059 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-20 19:46:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:46:44,061 INFO L225 Difference]: With dead ends: 430 [2022-11-20 19:46:44,061 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 19:46:44,063 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 [2022-11-20 19:46:44,064 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 57 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:46:44,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 466 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:46:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 19:46:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2022-11-20 19:46:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 152 states have internal predecessors, (203), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-20 19:46:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2022-11-20 19:46:44,086 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 70 [2022-11-20 19:46:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:46:44,086 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2022-11-20 19:46:44,087 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:46:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2022-11-20 19:46:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 19:46:44,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:46:44,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:46:44,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:46:44,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:46:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:46:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -787712482, now seen corresponding path program 1 times [2022-11-20 19:46:44,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:46:44,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090790044] [2022-11-20 19:46:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:44,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:46:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:44,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:46:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090790044] [2022-11-20 19:46:44,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090790044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:46:44,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676745565] [2022-11-20 19:46:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:46:44,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:46:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:46:44,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:46:44,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:46:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:46:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:46:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:46:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:44,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:46:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:46:44,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676745565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:46:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233105280] [2022-11-20 19:46:44,947 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-20 19:46:44,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:46:44,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:46:44,967 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:46:44,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:47:23,735 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 19:47:24,136 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-20 19:47:24,484 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 486 for LOIs [2022-11-20 19:48:11,836 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 454 for LOIs [2022-11-20 19:48:12,193 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 484 for LOIs [2022-11-20 19:48:38,792 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 442 for LOIs [2022-11-20 19:48:39,109 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-20 19:48:39,183 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 254 for LOIs [2022-11-20 19:48:39,227 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 457 for LOIs [2022-11-20 19:48:40,003 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:48:54,536 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:01,045 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:08,360 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:15,183 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:38,800 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 512 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:44,700 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 566 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:50,512 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 563 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:49:56,396 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:03,755 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 569 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:11,025 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 565 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:18,345 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 571 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:24,244 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 564 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:30,716 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 486 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:37,529 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 500 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:50,430 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 550 DAG size of output: 292 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:50:56,635 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 454 DAG size of output: 321 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:02,959 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 470 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:09,559 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 546 DAG size of output: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:53,123 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 543 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:51:58,803 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 545 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:52:05,462 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 587 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:52:09,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [233105280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:09,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:52:09,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-20 19:52:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122166487] [2022-11-20 19:52:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:09,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 19:52:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:52:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 19:52:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2711, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 19:52:09,627 INFO L87 Difference]: Start difference. First operand 243 states and 342 transitions. Second operand has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 19:53:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:05,194 INFO L93 Difference]: Finished difference Result 600 states and 892 transitions. [2022-11-20 19:53:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 19:53:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 71 [2022-11-20 19:53:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:05,198 INFO L225 Difference]: With dead ends: 600 [2022-11-20 19:53:05,198 INFO L226 Difference]: Without dead ends: 375 [2022-11-20 19:53:05,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 240.8s TimeCoverageRelationStatistics Valid=219, Invalid=3687, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 19:53:05,201 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 233 mSDsluCounter, 5777 mSDsCounter, 0 mSdLazyCounter, 5744 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:05,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 6041 Invalid, 5766 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [22 Valid, 5744 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time] [2022-11-20 19:53:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-20 19:53:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 321. [2022-11-20 19:53:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.4131455399061033) internal successors, (301), 216 states have internal predecessors, (301), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (77), 75 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-20 19:53:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 456 transitions. [2022-11-20 19:53:05,388 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 456 transitions. Word has length 71 [2022-11-20 19:53:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:05,389 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 456 transitions. [2022-11-20 19:53:05,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.15625) internal successors, (37), 30 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 19:53:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 456 transitions. [2022-11-20 19:53:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 19:53:05,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:05,392 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:53:05,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:53:05,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:53:05,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:53:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash -672915996, now seen corresponding path program 1 times [2022-11-20 19:53:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003206051] [2022-11-20 19:53:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:53:05,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003206051] [2022-11-20 19:53:05,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003206051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:05,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:05,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669591359] [2022-11-20 19:53:05,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:05,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:53:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:53:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:05,710 INFO L87 Difference]: Start difference. First operand 321 states and 456 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:53:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:06,038 INFO L93 Difference]: Finished difference Result 756 states and 1118 transitions. [2022-11-20 19:53:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:53:06,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-20 19:53:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:06,044 INFO L225 Difference]: With dead ends: 756 [2022-11-20 19:53:06,044 INFO L226 Difference]: Without dead ends: 461 [2022-11-20 19:53:06,045 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 [2022-11-20 19:53:06,046 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 55 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:06,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 482 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:53:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-20 19:53:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 454. [2022-11-20 19:53:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 321 states have (on average 1.4890965732087227) internal successors, (478), 324 states have internal predecessors, (478), 103 states have call successors, (103), 31 states have call predecessors, (103), 29 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-20 19:53:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 683 transitions. [2022-11-20 19:53:06,246 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 683 transitions. Word has length 76 [2022-11-20 19:53:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:06,247 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 683 transitions. [2022-11-20 19:53:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 19:53:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 683 transitions. [2022-11-20 19:53:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 19:53:06,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:06,250 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:53:06,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:53:06,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:53:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash 855113976, now seen corresponding path program 1 times [2022-11-20 19:53:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:06,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108708010] [2022-11-20 19:53:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:53:06,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:06,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108708010] [2022-11-20 19:53:06,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108708010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:53:06,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763018524] [2022-11-20 19:53:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:53:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:53:06,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:53:06,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:53:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:06,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:53:06,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:53:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:53:06,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:53:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 19:53:06,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763018524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:53:06,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [248129090] [2022-11-20 19:53:06,808 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-20 19:53:06,808 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:53:06,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:53:06,809 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:53:06,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:53:38,929 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 19:53:39,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-20 19:53:39,538 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-20 19:53:41,342 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-11-20 19:53:41,378 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2022-11-20 19:54:06,112 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 222 for LOIs [2022-11-20 19:54:06,146 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-20 19:54:06,214 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-20 19:54:06,257 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-20 19:54:11,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:54:25,192 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:54:31,488 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:54:38,192 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:54:44,537 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:55:27,926 WARN L233 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:55:48,575 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:55:54,796 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 498 DAG size of output: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:56:50,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [248129090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:50,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:56:50,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-20 19:56:50,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34670984] [2022-11-20 19:56:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:50,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 19:56:50,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 19:56:50,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3129, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 19:56:50,286 INFO L87 Difference]: Start difference. First operand 454 states and 683 transitions. Second operand has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 19:57:10,250 WARN L233 SmtUtils]: Spent 17.22s on a formula simplification. DAG size of input: 564 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:57:41,563 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 587 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:57:52,573 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 589 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:58:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:25,565 INFO L93 Difference]: Finished difference Result 913 states and 1399 transitions. [2022-11-20 19:58:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-20 19:58:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 77 [2022-11-20 19:58:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:25,570 INFO L225 Difference]: With dead ends: 913 [2022-11-20 19:58:25,570 INFO L226 Difference]: Without dead ends: 598 [2022-11-20 19:58:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 230.0s TimeCoverageRelationStatistics Valid=308, Invalid=4948, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 19:58:25,573 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 410 mSDsluCounter, 5598 mSDsCounter, 0 mSdLazyCounter, 5837 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 5901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:25,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 5845 Invalid, 5901 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [64 Valid, 5837 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2022-11-20 19:58:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-20 19:58:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 481. [2022-11-20 19:58:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 344 states have (on average 1.4912790697674418) internal successors, (513), 349 states have internal predecessors, (513), 106 states have call successors, (106), 32 states have call predecessors, (106), 30 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 19:58:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 724 transitions. [2022-11-20 19:58:25,829 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 724 transitions. Word has length 77 [2022-11-20 19:58:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:25,829 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 724 transitions. [2022-11-20 19:58:25,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 19:58:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 724 transitions. [2022-11-20 19:58:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 19:58:25,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:25,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:58:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:58:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 19:58:26,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1137407652, now seen corresponding path program 1 times [2022-11-20 19:58:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:26,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060814904] [2022-11-20 19:58:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:58:26,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:26,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060814904] [2022-11-20 19:58:26,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060814904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:58:26,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623212836] [2022-11-20 19:58:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:26,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:58:26,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:58:26,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:58:26,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a663e37d-d5b6-434e-b288-5d788c4d92e5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:58:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:26,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:58:26,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:58:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:58:26,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:58:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 19:58:26,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623212836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:58:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102258043] [2022-11-20 19:58:26,728 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-20 19:58:26,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:58:26,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:58:26,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:58:26,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:59:44,352 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 19:59:44,676 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-20 19:59:44,978 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-20 19:59:45,267 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 242 for LOIs [2022-11-20 19:59:46,755 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-20 19:59:46,817 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 210 for LOIs [2022-11-20 19:59:46,848 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-20 19:59:47,159 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 242 for LOIs [2022-11-20 20:00:03,531 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 200 for LOIs [2022-11-20 20:00:03,566 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 223 for LOIs [2022-11-20 20:00:03,647 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2022-11-20 20:00:03,684 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-20 20:00:07,571 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:21,795 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)